CN109474198A - Power supply change-over device - Google Patents

Power supply change-over device Download PDF

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Publication number
CN109474198A
CN109474198A CN201710801371.3A CN201710801371A CN109474198A CN 109474198 A CN109474198 A CN 109474198A CN 201710801371 A CN201710801371 A CN 201710801371A CN 109474198 A CN109474198 A CN 109474198A
Authority
CN
China
Prior art keywords
port
voltage
unit
switch
transistor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710801371.3A
Other languages
Chinese (zh)
Inventor
蔡守亮
杨宗铭
黄麒霖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hiwin Mikrosystem Corp
Hiwin Technologies Corp
Original Assignee
Hiwin Mikrosystem Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hiwin Mikrosystem Corp filed Critical Hiwin Mikrosystem Corp
Priority to CN201710801371.3A priority Critical patent/CN109474198A/en
Publication of CN109474198A publication Critical patent/CN109474198A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/275—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/293—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

A kind of power supply change-over device is operable in four kinds of translative mode, it and include one first switch unit, and one electrical connection the first switch unit voltage conversion unit, when power supply change-over device operates in direct current to each of exchange or dc-dc translative mode, voltage conversion unit receive one via the first switch unit DC voltage, and by DC voltage carry out direct current best friend circulation change or dc-dc convert, to generate AC switching voltage or direct current conversion voltage respectively, when power supply change-over device operates in AC to DC or exchanges each of best friend's stream translative mode, voltage conversion unit receive one via the first switch unit alternating voltage, and by alternating voltage carry out exchange best friend circulation change or AC to DC conversion after, to generate AC switching voltage or direct current conversion voltage respectively.

Description

Power supply change-over device
Technical field
The present invention relates to a kind of conversion equipments, particularly relate to a kind of power supply change-over device.
Background technique
The power adapter of early stage is only capable of operating in the electric energy conversion of single direction mostly, for example, exchange turns direct current conversion Device, exchange deliver stream transformer or switcher for changing DC into AC etc. to supply the power demands of product, however, with science and technology Progress, product is more and more diversified, how for various modes electric energy conversion be current research direction.
Summary of the invention
The purpose of the present invention is to provide a kind of power supply change-over devices that can operate in four kinds of translative mode.
Power supply change-over device of the present invention is electrically connected to one first alternating current unit, one first direct current component, one second exchange list Between member and one second direct current component, each alternating current unit has one first port, and each direct current component has one first port, the electricity Supply changeover device includes a voltage conversion unit, one first switch unit and one second switch unit.
The voltage conversion unit includes one first port and one second port, and by control to switch on four kinds of voltage translative mode Between, which is to flow to exchange conversion, dc-dc conversion, an AC to DC turn always respectively Change, exchange best friend's circulation is changed, after which is converted the received voltage of its first port institute by control, from Its second port exports the voltage after the conversion.
First switch unit is electrically connected the first port and this at the first port of first alternating current unit, first direct current component Between first port of voltage conversion unit, and made the first of the first port of first alternating current unit and the voltage conversion unit by control Between port switches on conducting and is not turned on, switch on the first port of first direct current component and the first port of the voltage conversion unit Between being connected and being not turned on, when first port at the first port of first alternating current unit and the voltage conversion unit is on, then First port of first direct current component and the first port of the voltage conversion unit are in when being not turned on, on the contrary, when first friendship Flow unit the first port and the voltage conversion unit the first port be in is not turned on, then the first port of first direct current component and this First port of voltage conversion unit is on.
Second switch unit is electrically connected the first port and this at the first port of second alternating current unit, second direct current component Between second port of voltage conversion unit, and made the second of the first port of second alternating current unit and the voltage conversion unit by control Between port switches on conducting and is not turned on, switch on the first port of second direct current component and the second port of the voltage conversion unit Between being connected and being not turned on, when second port at the first port of second alternating current unit and the voltage conversion unit is on, then First port of second direct current component and the second port of the voltage conversion unit are in and are not turned on, on the contrary, when second exchange First port of unit and the second port of the voltage conversion unit are in when being not turned on, then the first port of second direct current component with should Second port of voltage conversion unit is on.
Wherein, when first direct current component the first port provide first DC voltage when, and first switch unit by Control makes the first port of first direct current component and the first port of the voltage conversion unit switch on conducting, second switch unit The first port of second alternating current unit and the second port of the voltage conversion unit is set to switch on conducting by control, then the voltage is converted After unit changes first DC voltage progress direct current best friend circulation, second alternating current unit is output to from its second port.
When the first port of first direct current component provides first DC voltage, and first switch unit is made by control First port of first direct current component and the first port of the voltage conversion unit switch on conducting, which is controlled Second port at the first port and the voltage conversion unit that make second direct current component switches on conducting, then the voltage conversion unit will After first DC voltage carries out dc-dc conversion, second direct current component is output to from its second port.
When the first port of first alternating current unit provides first alternating voltage, and first switch unit is made by control First port of first alternating current unit and the first port of the voltage conversion unit switch on conducting, which is controlled Second port at the first port and the voltage conversion unit that make second direct current component switches on conducting, then the voltage conversion unit will After first alternating voltage carries out AC to DC conversion, second direct current component is output to from its second port.
When the first port of first alternating current unit provides first alternating voltage, and first switch unit is made by control First port of first alternating current unit and the first port of the voltage conversion unit switch on conducting, which is controlled Second port at the first port and the voltage conversion unit that make second alternating current unit switches on conducting, then the voltage conversion unit will First alternating voltage carry out exchange best friend circulation change after, be output to second alternating current unit from its second port.
The beneficial effects of the present invention are: it is opened by described the second of first switch unit 2 and second switch unit 3 The switching of S2 and third switch S3 is closed, then cooperates the conduction status of the M group transistor unit of the voltage conversion unit 1, is made The power supply change-over device can be reached by same circuit device dc-dc conversion, direct current best friend circulation change, exchange to straight Circulation changes and exchange two-way eight state sample implementation changed of best friend's circulation.
Detailed description of the invention
Other features of the invention and effect will be clearly presented in the embodiment referring to schema, in which:
Fig. 1 is a schematic diagram, illustrates the first embodiment and a second embodiment of power supply change-over device of the present invention；
Fig. 2 is a circuit diagram, illustrates the first embodiment and the second embodiment of power supply change-over device of the present invention；
Fig. 3 is a circuit block diagram, illustrates that the first embodiment of power supply change-over device of the present invention operates in direct current to straight Flow translative mode；
Fig. 4 is a circuit diagram, illustrates that the first embodiment of power supply change-over device of the present invention operates in dc-dc and turns First conversion circuit when mold changing formula；
Fig. 5 is a waveform diagram, illustrates that the first embodiment of power supply change-over device of the present invention operates in dc-dc and turns The timing diagram of each transistor unit of the first conversion circuit when mold changing formula；
Fig. 6 is a circuit diagram, illustrates that the first embodiment of power supply change-over device of the present invention operates in dc-dc and turns Second conversion circuit when mold changing formula；
Fig. 7 is a waveform diagram, illustrates the timing diagram of each transistor unit of second conversion circuit；
Fig. 8 is a circuit block diagram, illustrates that the first embodiment of power supply change-over device of the present invention operates in direct current best friend Flow translative mode；
Fig. 9 is a circuit diagram, illustrates that the first embodiment of power supply change-over device of the present invention operates in direct current best friend circulation First conversion circuit when mold changing formula；
Figure 10 is a circuit diagram, illustrates that the first embodiment of power supply change-over device of the present invention operates in direct current best friend circulation Second conversion circuit when mold changing formula；
Figure 11 is a timing diagram, and supplementary explanation is higher than the electricity stored by the second capacitor when the voltage value stored by first capacitor When pressure value, the sequencing of four mode of first conversion circuit of Fig. 7；
Figure 12 is a timing diagram, and supplementary explanation is when the voltage value stored by first capacitor is lower than the electricity stored by the second capacitor When pressure value, the sequencing of four mode of first conversion circuit of Fig. 7；
Figure 13 is a timing diagram, and supplementary explanation is equal to stored by second capacitor when the voltage value stored by the first capacitor Voltage value, and the duty cycle be greater than 0.5 when, the sequencing of four mode of first conversion circuit of Fig. 7；
Figure 14 is a timing diagram, and supplementary explanation is equal to stored by second capacitor when the voltage value stored by the first capacitor Voltage value, and when the duty cycle is less than 0.5, the sequencing of four mode of first conversion circuit of Fig. 7；
Figure 15 is a circuit block diagram, illustrates that the first embodiment of power supply change-over device of the present invention operates in and exchanges to straight Flow translative mode；
Figure 16 is a circuit diagram, illustrates that the first embodiment of power supply change-over device of the present invention operates in AC to DC and turns Second conversion circuit when mold changing formula；
Figure 17 is a circuit block diagram, illustrates that the first embodiment of power supply change-over device of the present invention operates in exchange best friend Flow translative mode；
Figure 18 is a circuit diagram, illustrates that the first embodiment of power supply change-over device of the present invention operates in exchange best friend's circulation Second conversion circuit when mold changing formula；
Figure 19 is a circuit block diagram, illustrates that a second embodiment of power supply change-over device of the present invention operates in direct current to straight Flow translative mode；
Figure 20 is a circuit block diagram, illustrates that a second embodiment of power supply change-over device of the present invention operates in direct current best friend Flow translative mode；
Figure 21 is a circuit block diagram, illustrates that a second embodiment of power supply change-over device of the present invention operates in and exchanges to straight Flow translative mode；And
Figure 22 is a circuit block diagram, illustrates that a second embodiment of power supply change-over device of the present invention operates in exchange best friend Flow translative mode.
Specific embodiment
Before the present invention is described in detail, it shall be noted that in the following description content, similar element is with identical Number is to indicate.
Refering to fig. 1, power supply change-over device of the present invention is electrically connected to one first alternating current unit AC1, one first direct current component Between DC1, one second alternating current unit AC2 and one second direct current component DC2, each alternating current unit AC1, AC2 have one first port, And first port of each alternating current unit AC1, AC2 have M end, each direct current component DC1, DC2 have one first port, each First port of direct current component DC1, DC2 have a first end and a second end, below will be respectively with a first embodiment and one Second embodiment is illustrated, and the first alternating current unit AC1 of this first embodiment is three-phase alternating current voltage source, therefore, should There are three ends (M=3) for first port tool of first alternating current unit AC1 to export its three-phase alternating voltage, and will be equal to below with M For 3.
Referring to Fig.2, the first embodiment of power supply change-over device of the present invention includes that a voltage conversion unit 1,1 first is cut Change unit 2, one second switch unit 3 and a control unit (not shown).
By between controlling to switch on four kinds of voltage translative mode, which divides the voltage conversion unit 1 Be not flow to always exchange conversion, a dc-dc conversion, an AC to DC conversion, one exchange best friend circulation change, the electricity After pressure converting unit 1 is converted the received voltage of its first port institute by control, after exporting the conversion from its second port Voltage.
The voltage conversion unit 1 includes one first port, one second port, a first capacitor C1, one second capacitor C2, one first Conversion circuit 11 and one second conversion circuit 12.
First port has M first end and M second end, and M is positive integer.
Second port has M first end and M second end.
First capacitor C1 has a first end and a second end.
The second capacitor C2 has the first end and a second end of the second end of an electrical connection first capacitor C1.
First conversion circuit 11 is electrically connected the first end and described the of first capacitor C1 and second capacitor C2 Two ends, and first port of the voltage conversion unit 1 is electrically connected to receive first alternating voltage and first DC voltage One of them, and the conversion of AC to DC voltage or the conversion of dc-dc voltage are operated in by control.
First conversion circuit 11 includes M the second inductance L2, M first switch S1 and M the group electricity of the first inductance L1, M Crystal unit 13~15.
Every one first inductance L1 has a first end and a second end, and the first end electrical connection of every one first inductance L1 should Person corresponding to the one of the M first end at first port of voltage conversion unit 1.
Every one second inductance L2 has a first end and a second end, and the first end electrical connection of every one second inductance L2 should Person corresponding to the one of the M second end at first port of voltage conversion unit 1.
There is each first switch S1 a first end, a second end, a third end and a reception one to control the 4th of signal End, the third end of each first switch S1 are electrically connected the second end of the corresponding person of the M the first inductance L1, and according to the control The signal conduction processed third end and the second end or the alternative one at the third end and the first end.
Each group of transistor unit 13/14/15 includes one first transistor M1, one second transistor M2, third electricity crystalline substance Body M3, one the 4th transistor M4, a first diode D1 and one second diode D2.
The first transistor M1 has first end, a second end and one for the first end of an electrical connection first capacitor C1 Receive the third end of the control signal.
The second transistor M2 receives the third end of the control signal with a first end, a second end and one, this second The first end of transistor M2 is electrically connected the second end of first transistor M1.
The third transistor M3 receives the third end of the control signal, the third with a first end, a second end and one The first end of transistor M3 is electrically connected the second end of second transistor M2.
4th transistor M4 has the second end of a first end, the second end of electrical connection second capacitor C2, and One receives the third end of the control signal, and the first end of the 4th transistor M4 is electrically connected the second end of third transistor M3 With the second end of one of the M the second inductance L2.
First diode D1 has a cathode and an anode, and the cathode of first diode D1 is electrically connected first electricity The second end of crystal M1, the anode of first diode D1 are electrically connected the second end of first capacitor C1.
The second diode D2 has a cathode and an anode, and the cathode of second diode D2 is electrically connected first electricity Hold the second end of C1, the anode of second diode D2 is electrically connected the first end of the 4th transistor M4.
Wherein, the second end of first transistor M1 of m group transistor unit is also electrically connected n-th of first switch S1 Second end, the second end of second transistor M2 of m group transistor unit is electrically connected the first of m-th of first switch S1 End, m=1~M, n=M~1, M, m, n are positive integer.
By taking the present embodiment as an example, the present embodiment shares three groups of transistor units 13~15 (M=3), respectively first group electricity 13, second groups of transistor units 14 of crystal unit and third group transistor unit 15, first group of transistor unit 13 (m=1) The second end of first transistor M1 be also electrically connected the second end of third first switch S1 (n=3), first group of transistor The second end of second transistor M2 of unit 13 (m=1) is electrically connected the first end of first first switch S1 (m=1), and The second end of first transistor M1 of second group of transistor unit 14 (m=2) is also electrically connected second first switch S1 (n =2) second end of second end, second transistor M2 of second group of transistor unit 14 (m=2) is electrically connected second The first end of first switch S1 (m=2), and so on.
Second conversion circuit 12 is electrically connected the first end and described the of first capacitor C1 and second capacitor C2 Two ends, and it is electrically connected second port of the voltage conversion unit 1, and operated in direct current to alternating voltage conversion or direct current by control It is converted to DC voltage.
Second conversion circuit 12 includes M the second inductance L2, M first switch S1 and M the group electricity of the first inductance L1, M Crystal unit 13~15.
Every one first inductance L1 has a first end and a second end, and the first end electrical connection of every one first inductance L1 should The corresponding person therein of the M first end at second port of voltage conversion unit 1.
Every one second inductance L2 has a first end and a second end, and the first end electrical connection of every one second inductance L2 should The corresponding person therein of the M second end at second port of voltage conversion unit 1.
There is each first switch S1 a first end, a second end, a third end and a reception one to control the 4th of signal End, the third end of each first switch S1 are electrically connected the second end of the corresponding person of the M the first inductance L1, and according to the control The one of the two of the signal conduction processed third end and the second end or the third end and the first end.
Each group of transistor unit 13/14/15 includes one first transistor M1, one second transistor M2, third electricity crystalline substance Body M3, one the 4th transistor M4, a first diode D1 and one second diode D2.
The first transistor M1 has first end, a second end and one for the first end of an electrical connection first capacitor C1 Receive the third end of the control signal.
The second transistor M2 receives the third end of the control signal with a first end, a second end and one, this second The first end of transistor M2 is electrically connected the second end of first transistor M1.
The third transistor M3 receives the third end of the control signal, the third with a first end, a second end and one The first end of transistor M3 is electrically connected the second end of second transistor M2.
4th transistor M4 has the second end of a first end, the second end of electrical connection second capacitor C2, and One receives the third end of the control signal, and the first end of the 4th transistor M4 is electrically connected the second end of third transistor M3 With the second end of one of the M the second inductance L2.
First diode D1 has a cathode and an anode, and the cathode of first diode D1 is electrically connected first electricity The second end of crystal M1, the anode of first diode D1 are electrically connected the second end of first capacitor C1.
The second diode D2 has a cathode and an anode, and the cathode of second diode D2 is electrically connected first electricity Hold the second end of C1, the anode of second diode D2 is electrically connected the first end of the 4th transistor M4.
Wherein, the second end of first transistor M1 of m group transistor unit is also electrically connected m-th of first switch S1 Second end, the second end of second transistor M2 of m group transistor unit is electrically connected the first of m-th of first switch S1 End, m=1~M, M, m are positive integer.
By taking the present embodiment as an example, the present embodiment shares three groups of transistor units 13~15 (M=3), respectively first group electricity 13, second groups of transistor units 14 of crystal unit and third group transistor unit 15, first group of transistor unit 13 (m=1) The second end of first transistor M1 be also electrically connected the second end of first first switch S1 (m=1), this first group electricity is brilliant The second end of second transistor M2 of body unit 13 (m=1) is electrically connected the first end of first first switch S1 (m=1), And the second end of first transistor M1 of second group of transistor Unit 14 (m=2) is also electrically connected second first switch S1 (m=2) second end, the second end electrical connection second of second transistor M2 of second group of transistor unit 14 (m=2) The first end of a first switch S1 (m=2), and so on.
Wherein, each group of transistor unit 13/14/15 of first conversion circuit 11 and second conversion circuit 12 should The first end, second end and third end of first transistor to the 4th transistor M1~M4 are respectively a N-type metal oxide field The drain electrode of effect electric crystal (Metal-Oxice-Semiconductor Field-Effect Transistor, MOSFET) (Drain), source electrode (Source) and grid (Gate).
First switch unit 2 be electrically connected the first port of first alternating current unit AC1, first direct current component DC1 the Between one port and the first port of the voltage conversion unit 1, and turn the first port of first alternating current unit AC1 and the voltage by control The first port for changing unit 1 switches on conducting and between being not turned on, and keeps the first port of first direct current component DC1 and voltage conversion single The first port and the voltage conversion unit 1 between first port of member 1 switches on conducting and is not turned on, as first alternating current unit AC1 The first port when being on, then the first port of first direct current component DC1 and the first port of the voltage conversion unit 1 are in not Conducting, on the contrary, when the first port of first alternating current unit AC1 and the first port of the voltage conversion unit 1 are in and are not turned on, Then the first port of first direct current component DC1 and the first port of the voltage conversion unit 1 are on.
First switch unit 2 includes a M second switch S2 and third switch S3.
Each second switch S2 receives the 4th of the control signal with a first end, a second end, a third end and one End, the first end of the M second switch S2 are electrically connected this M end at first port of first alternating current unit AC1, The second end of the M second switch S2 is electrically connected the first end at first port of first direct current component DC1, and the M is a The third end of second switch S2 is electrically connected the M first end at first port of the voltage conversion unit 1.
The third switch S3 receives the 4th of the control signal with a first end, a second end, a third end and one End, the second end of third switch S3 are electrically connected the M second end at first port of the voltage conversion unit 1, the third The third end of switch S3 is electrically connected the second end at first port of first direct current component DC1.
Second switch unit 3 be electrically connected the first port of second alternating current unit AC2, second direct current component DC2 the Between one port and the second port of the voltage conversion unit 1, and turn the first port of second alternating current unit AC2 and the voltage by control The second port for changing unit 1 switches on conducting and between being not turned on, and keeps the first port of second direct current component DC2 and voltage conversion single The first port and the voltage conversion unit 1 between second port of member 1 switches on conducting and is not turned on, as second alternating current unit AC2 The second port when being on, then the first port of second direct current component DC2 and the second port of the voltage conversion unit 1 are in not Conducting, on the contrary, when the first port of second alternating current unit AC2 and the second port of the voltage conversion unit 1 are in and are not turned on, Then the first port of second direct current component DC2 and the second port of the voltage conversion unit 1 are on.
Second switch unit 3 includes a M second switch S2 and third switch S3.
Each second switch S2 receives the 4th of the control signal with a first end, a second end, a third end and one End, the first end of the M second switch S2 are electrically connected this M end at first port of second alternating current unit AC2, The second end of the M second switch S2 is electrically connected the first end at first port of second direct current component DC2, and the M is a The third end of second switch S2 is electrically connected the M first end at second port of the voltage conversion unit 1.
The third switch S3 receives the 4th of the control signal with a first end, a second end, a third end and one End, the second end of third switch S3 are electrically connected the M second end at second port of the voltage conversion unit 1, the third The third end of switch S3 is electrically connected the second end at first port of first direct current component DC1.
The control unit is set according to a user generates the control signal to control which the power supply change-over device switches on A kind of voltage translative mode.
The first embodiment of power supply change-over device of the present invention is divided into four translative mode below and becomes apparent from its work of explanation It is dynamic.
<first embodiment of the power supply change-over device operates in dc-dc translative mode>
Refering to Fig. 3, each second switch S2 and third switch S3 of first switch unit 2 are controlled signal by this respectively Controlling makes the second end be electrically connected to the third end of itself, so that the first port of first direct current component DC1 and the voltage are converted First port of unit 1 switches on conducting, and each second switch S2 of second switch unit 3 and third switch S3 respectively by Control signal control makes the second end be electrically connected to itself third end, thus second switch unit 3 by control make this The first port of two direct current component DC2 and the second port of the voltage conversion unit 1 switch on conducting.
At this point, first switch unit 2 can receive the first port from first direct current component DC1 provided by this first DC voltage, and first DC voltage is sent to first port of the voltage conversion unit 1, which will First DC voltage charges to first capacitor C1 and the second capacitor C2 after carrying out dc-dc conversion, second conversion Circuit 12 is output to the electricity after the voltage on first capacitor C1 and second capacitor C2 is carried out dc-dc conversion Second port of converting unit 1 is pressed, the third end of each second switch S2 of second switch unit 3 and the third switch The second end of S3 receives the voltage after conversion, and the second end of each second switch S2 by second switch unit 3 For the three-polar output with third switch S3 to second direct current component DC2, the second direct current component DC2 is straight as a receiving The load of stream.
First conversion circuit 11 under this translative mode is alternating expression booster circuit, and second conversion circuit 12 is Reduction voltage circuit.
Simultaneously refering to Fig. 4 and Fig. 5, Fig. 4 is with first group of transistor unit 13 of first conversion circuit 11 for exemplary reality Aspect is applied, Fig. 5 is the timing diagram of each transistor unit of the first conversion circuit 11, Vgs (sf12) and Vgs on Fig. 5 (sf13) be respectively first group of transistor unit 13 the grid and source electrode of the second transistor M2 and third transistor M3 between Cross-pressure, Vds (sf12) and Vds (sf13) are respectively the second transistor M2 and third electricity of first group of transistor unit 13 Cross-pressure between the drain electrode and source electrode of crystal M3, Vgs (sf22) and Vgs (sf23) are respectively being somebody's turn to do for second group of transistor unit 14 Cross-pressure between second transistor M2 and the grid and source electrode of third transistor M3, Vds (sf22) and Vds (sf23) be respectively this Cross-pressure between the drain electrode and source electrode of the second transistor M2 and third transistor M3 of two groups of transistor units 14, Vgs (sf32) It is respectively grid and the source of the second transistor M2 and third transistor M3 of the third group transistor unit 15 with Vgs (sf33) The cross-pressure of interpolar, Vds (sf32) and Vds (sf33) are respectively the second transistor M2 and the of the third group transistor unit 15 Cross-pressure between the drain electrode and source electrode of three transistor M3, IL7、IL8And IL9Respectively flow through corresponding first first switch S1 (on) The first inductance L1, corresponding second first switch S1 (in) the first inductance L1, corresponding third first switch S1 (under) the first inductance L1 electric current.
It can be seen that in first time point t1, the second transistor M2 and the third electricity of first group of transistor unit 13 are brilliant Body M3 is conducting and operates in the mode one of Fig. 4, and the of second group of transistor unit 14 and third group transistor unit 15 Two transistor M2 and third transistor M3 are not turned on and operate in the mode four of Fig. 4, so that second group of 14 He of transistor unit Third group transistor unit 15 by first DC voltage carry out dc-dc conversion after to first capacitor C1 and this second Capacitor C2 charging, in second time point t2, the second transistor M2 and the third electricity of first group of transistor unit 13 are brilliant Body M3 is respectively to be not turned on and be connected and operate in the mode three of Fig. 4, so that first group of transistor unit 13 is first straight by this Galvanic electricity pressure charges to first capacitor C1 after carrying out dc-dc conversion, the second transistor of second group of transistor unit 14 M2 and third transistor M3 is respectively the mode two for being connected and be not turned on and operate in Fig. 4, so that second group of transistor unit 14 will charge to the second capacitor C2 after first DC voltage progress dc-dc conversion, and the third group transistor unit 15 the second transistor M2 and third transistor M3 is all the mode four for being not turned on and operating in Fig. 4, so that the third group electricity is brilliant Body unit 15 charges to first capacitor C1 and the second capacitor C2 after first DC voltage is carried out dc-dc conversion, Refering to Fig. 4 and Fig. 5 and so on, therefore first DC voltage can be carried out dc-dc really by first conversion circuit 11 It charges after conversion to first capacitor C1 and the second capacitor C2.
Refering to Fig. 6 and Fig. 7, Fig. 6 is with first group of transistor unit 13 of second conversion circuit 12 for exemplary implementation state Sample, Fig. 7 are the timing diagram of each transistor unit of the second conversion circuit 12, Vgs (Sb11) and Vgs (Sb14) points on Fig. 7 Cross-pressure not between the first transistor M1 and the grid and source electrode of the 4th transistor M4 of first group of transistor unit 13, Vds (Sb11) and Vds (Sb14) are respectively the first transistor M1 and the 4th transistor M4 of first group of transistor unit 13 Drain electrode and source electrode between cross-pressure, Vgs (Sb21) and Vgs (Sb24) are respectively first electricity of second group of transistor unit 14 Cross-pressure between crystal M1 and the grid and source electrode of the 4th transistor M4, Vds (Sb21) and Vds (Sb24) are respectively this second group electricity Cross-pressure between the first transistor M1 of crystal unit 14 and the drain electrode and source electrode of the 4th transistor M4, Vgs (Sb31) and Vgs It (Sb34) is respectively between the first transistor M1 of the third group transistor unit 15 and the grid and source electrode of the 4th transistor M4 Cross-pressure, Vds (Sb31) and Vds (Sb34) are respectively the electricity of the first transistor M1 and the 4th of the third group transistor unit 15 Cross-pressure between the drain electrode and source electrode of crystal M4, ISb11And ISb14First transistor M1 of respectively first group transistor unit 13 With the electric current of the 4th transistor M4, ISb21And ISb24The first transistor M1 and the 4th of respectively second group transistor unit 14 The electric current of transistor M4, ISb31And ISb34Respectively the first transistor M1 and the 4th transistor of third group transistor unit 15 The electric current of M4, IL1、IL2And IL3Respectively flow through corresponding first first switch S1 (on) the first inductance L1, it is corresponding this Two first switch S1 (in) the first inductance L1, corresponding third first switch S1 (under) the first inductance L1 electric current.
<first embodiment of the power supply change-over device operates in direct current best friend and flows translative mode>
Refering to Fig. 8, each second switch S2 and third switch S3 of first switch unit 2 are controlled signal by this respectively Controlling makes the second end be electrically connected to the third end of itself, so that the first port of first direct current component DC1 and the voltage are converted First port of unit 1 switches on conducting, and each second switch S2 of second switch unit 3 and third switch S3 respectively by Control signal control makes the first end be electrically connected to itself third end, thus second switch unit 3 by control make this The first port of two alternating current unit AC2 and the second port of the voltage conversion unit 1 switch on conducting.
At this point, first switch unit 2 can receive the first port from first direct current component DC1 provided by this first DC voltage, and first DC voltage is sent to first port of the voltage conversion unit 1, which will First DC voltage charges to first capacitor C1 and the second capacitor C2 after carrying out dc-dc conversion, second conversion Circuit 12 carries out the voltage on first capacitor C1 and second capacitor C2 to be output to the electricity after direct current best friend circulation is changed After pressing second port of converting unit 1, the third end of each second switch S2 of second switch unit 3 to receive conversion Voltage, and exported by the first end of each second switch S2 to second alternating current unit AC2, second alternating current unit AC2 The load for receiving exchange for one.
First conversion circuit 11 under this actuation can be used as alternating expression booster circuit, which can do For frequency changer circuit, by taking Fig. 9 and Figure 10 as an example, Fig. 9 and Figure 10 are respectively with first conversion circuit 11 and second conversion circuit 12 First group of transistor unit 13 be exemplary state sample implementation, but invention is not limited thereto.In addition, this first turn of Fig. 9 The sequencing of four mode of circuit 11 is changed, can be determined according to the voltage value stored by first capacitor C1 and the second capacitor C2 every First transistor M1, second transistor M2, the third transistor M3 and the 4th transistor M4 of one group of transistor unit Switching sequence, for example, when the voltage value stored by first capacitor C1 be higher than second capacitor C2 stored by voltage value when, The sequencing of four mode is as shown in figure 11, when the voltage value stored by first capacitor C1 is stored up lower than second capacitor C2 When the voltage value deposited, the sequencing of four mode is as shown in figure 12, is somebody's turn to do when the voltage value stored by first capacitor C1 is equal to Voltage value stored by second capacitor C2, and the duty cycle be greater than 0.5 when, the sequencing of four mode is as shown in figure 13, when Voltage value stored by first capacitor C1 is equal to the voltage value stored by second capacitor C2, and when the duty cycle is less than 0.5, The sequencing of four mode is as shown in figure 14, parameter VM2And VM3Respectively the second transistor M2 and third transistor M3 Two end of grid (Gate) and source electrode (Source) cross-pressure.
<first embodiment of the power supply change-over device operates in AC to DC translative mode>
Refering to fig. 15, each second switch S2 and third switch S3 of first switch unit 2 are controlled letter by this respectively Number control makes the first end be electrically connected to itself third end, so that the first port of first alternating current unit AC1 and the voltage turn The first port for changing unit 1 switches on conducting, and each second switch S2 of the second switch unit 3 and third switch S3 distinguishes Being controlled signal control by this makes the second end be electrically connected to the third end of itself, so that second switch unit 3 is made this by control The first port of second direct current component DC2 and the second port of the voltage conversion unit 1 switch on conducting.
At this point, first switch unit 2 can receive the first port from first alternating current unit AC1 provided by this first Alternating voltage, and first alternating voltage is sent to first port of the voltage conversion unit 1, which will First alternating voltage charges to first capacitor C1 and the second capacitor C2 after carrying out AC to DC conversion, second conversion Circuit 12 is output to the electricity after the voltage on first capacitor C1 and second capacitor C2 is carried out dc-dc conversion Second port of converting unit 1 is pressed, the third end of each second switch S2 of second switch unit 3 and the third switch The second end of S3 receives the voltage after conversion, and by this of the second end of each second switch S2 and third switch S3 Three-polar output to second direct current component DC2, second direct current component DC2 be the load for receiving direct current.
First conversion circuit 11 under this actuation can be used as synchronous rectification and circuit of power factor correction, and this second turn Changing circuit 12 can be used as reduction voltage circuit, and by taking Figure 16 as an example, Figure 16 is with first group of transistor unit 13 of second conversion circuit 12 For exemplary state sample implementation, but invention is not limited thereto.
<first embodiment of the power supply change-over device operates in exchange best friend and flows translative mode>
Refering to fig. 17, each second switch S2 and third switch S3 of first switch unit 2 are controlled letter by this respectively Number control makes the first end be electrically connected to itself third end, so that the first port of first alternating current unit AC1 and the voltage turn The first port for changing unit 1 switches on conducting, and each second switch S2 of the second switch unit 3 and third switch S3 distinguishes Being controlled signal control by this makes the first end be electrically connected to the third end of itself, so that second switch unit 3 is made this by control The first port of second alternating current unit AC2 and the second port of the voltage conversion unit 1 switch on conducting.
At this point, first switch unit 2 can receive the first port from first alternating current unit AC1 provided by this first Alternating voltage, and first alternating voltage is sent to first port of the voltage conversion unit 1, which will First alternating voltage charges to first capacitor C1 and the second capacitor C2 after carrying out AC to DC conversion, second conversion Circuit 12 carries out the voltage on first capacitor C1 and second capacitor C2 to be output to the electricity after direct current best friend circulation is changed After pressing second port of converting unit 1, the third end of each second switch S2 of second switch unit 3 to receive conversion Voltage, and exported by the first end of each second switch S2 to second alternating current unit AC2, second alternating current unit AC2 For the load for receiving exchange.
First conversion circuit 11 under this actuation can be used as synchronous rectification and circuit of power factor correction, and this second turn Changing circuit 12 can be used as frequency changer circuit, and by taking Figure 18 as an example, Figure 18 is with first group of transistor unit 13 of second conversion circuit 12 For exemplary state sample implementation, but invention is not limited thereto.
The second embodiment of power supply change-over device of the present invention is similar to the first embodiment, the difference is that: the electricity Second switch unit 3 of supply changeover device receives one second alternating voltage provided by second alternating current unit AC2 or should One second DC voltage alternative one provided by second direct current component DC2, and dc-dc modulus of conversion is switched on by control Formula, direct current best friend flow translative mode, AC to DC translative mode, and exchange best friend flows translative mode, and this second embodiment The second alternating current unit AC2 be three-phase alternating current voltage source, therefore, first port of second alternating current unit AC2 has three A end (M=3) to export its three-phase alternating voltage, and below will by M be equal to 3 for.
The second embodiment of power supply change-over device of the present invention is divided into four translative mode below and becomes apparent from its work of explanation It is dynamic.
<second embodiment of the power supply change-over device operates in dc-dc translative mode>
Refering to fig. 19, each second switch S2 and third switch S3 of second switch unit 3 are controlled letter by this respectively Number control makes the second end be electrically connected to itself third end, so that the first port of second direct current component DC2 and the voltage turn The second port for changing unit 1 switches on conducting, and each second switch S2 of the first switch unit 2 and third switch S3 distinguishes Being controlled signal control by this makes the second end be electrically connected to the third end of itself, so that second switch unit 3 is made this by control The first port of first direct current component DC1 and the first port of the voltage conversion unit 1 switch on conducting.
At this point, second switch unit 3 can receive the first port from second direct current component DC2 provided by this second DC voltage, and second DC voltage is sent to second port of the voltage conversion unit 1, which will Second DC voltage charges to first capacitor C1 and the second capacitor C2 after carrying out dc-dc conversion, first conversion Circuit 11 is output to the electricity after the voltage on first capacitor C1 and second capacitor C2 is carried out dc-dc conversion First port of converting unit 1 is pressed, the third end of each second switch S2 of first switch unit 2 and the third switch The second end of S3 receives the voltage after conversion, and the second end of each second switch S2 by first switch unit 2 For the three-polar output with third switch S3 to first direct current component DC1, first direct current component DC1 is to receive direct current The load.
Second conversion circuit 12 under this actuation can be used as alternating expression booster circuit, which can do For reduction voltage circuit.
<second embodiment of the power supply change-over device operates in direct current best friend and flows translative mode>
Refering to Figure 20, each second switch S2 and third switch S3 of second switch unit 3 are controlled letter by this respectively Number control makes the second end be electrically connected to itself third end, so that the first port of second direct current component DC2 and the voltage turn The second port for changing unit 1 switches on conducting, and each second switch S2 of the first switch unit 2 and third switch S3 distinguishes Being controlled signal control by this makes the first end be electrically connected to the third end of itself, so that first switch unit 2 is made this by control The first port of first alternating current unit AC1 and the first port of the voltage conversion unit 1 switch on conducting.
At this point, second switch unit 3 can receive the first port from second direct current component DC2 provided by this second DC voltage, and second DC voltage is sent to second port of the voltage conversion unit 1, which will Second DC voltage charges to first capacitor C1 and the second capacitor C2 after carrying out dc-dc conversion, first conversion Circuit 11 carries out the voltage on first capacitor C1 and second capacitor C2 to be output to the electricity after direct current best friend circulation is changed After pressing first port of converting unit 1, the third end of each second switch S2 of first switch unit 2 to receive conversion Voltage, and exported by the first end of each second switch S2 of first switch unit 2 to first alternating current unit AC1, First alternating current unit AC1 is the load for receiving exchange.
Second conversion circuit 12 under this actuation can be used as alternating expression booster circuit, which can do For frequency changer circuit.
<second embodiment of the power supply change-over device operates in AC to DC translative mode>
Refering to Figure 21, each second switch S2 and third switch S3 of second switch unit 3 are controlled letter by this respectively Number control makes the first end be electrically connected to itself third end, so that the first port of second alternating current unit AC2 and the voltage turn The second port for changing unit 1 switches on conducting, and each second switch S2 of the first switch unit 2 and third switch S3 distinguishes Being controlled signal control by this makes the second end be electrically connected to the third end of itself, so that first switch unit 2 is made this by control The first port of first direct current component DC1 and the first port of the voltage conversion unit 1 switch on conducting.
At this point, second switch unit 3 can receive the first port from second alternating current unit AC2 provided by this second Alternating voltage, and second alternating voltage is sent to second port of the voltage conversion unit 1, which will Second alternating voltage charges to first capacitor C1 and the second capacitor C2 after carrying out AC to DC conversion, first conversion Circuit 11 is output to the electricity after the voltage on first capacitor C1 and second capacitor C2 is carried out dc-dc conversion First port of converting unit 1 is pressed, the third end of each second switch S2 of first switch unit 2 and the third switch The second end of S3 receives the voltage after conversion, and by this of the second end of each second switch S2 and third switch S3 Three-polar output to first direct current component DC1, first direct current component DC1 be the load for receiving direct current.
Second conversion circuit 12 under this actuation can be used as synchronous rectification and circuit of power factor correction, and this first turn Changing circuit 11 can be used as reduction voltage circuit.
<second embodiment of the power supply change-over device operates in exchange best friend and flows translative mode>
Refering to Figure 22, each second switch S2 and third switch S3 of second switch unit 3 are controlled letter by this respectively Number control makes the first end be electrically connected to itself third end, so that the first port of second alternating current unit AC2 and the voltage turn The second port for changing unit 1 switches on conducting, and each second switch S2 of the first switch unit 2 and third switch S3 distinguishes Being controlled signal control by this makes the first end be electrically connected to the third end of itself, so that first switch unit 2 is made this by control The first port of first alternating current unit AC1 and the first port of the voltage conversion unit 1 switch on conducting.
At this point, second switch unit 3 can receive the first port from second alternating current unit AC2 provided by this second Alternating voltage, and second alternating voltage is sent to second port of the voltage conversion unit 1, which will Second alternating voltage charges to first capacitor C1 and the second capacitor C2 after carrying out AC to DC conversion, first conversion Circuit 11 carries out the voltage on first capacitor C1 and second capacitor C2 to be output to the electricity after direct current best friend circulation is changed After pressing first port of converting unit 1, the third end of each second switch S2 of first switch unit 2 to receive conversion Voltage, and exported by the first end of each second switch S2 to first alternating current unit AC1, first alternating current unit AC1 For the load for receiving exchange.
Second conversion circuit 12 under this actuation can be used as synchronous rectification and circuit of power factor correction, and this first turn Changing circuit 11 can be used as frequency changer circuit.
Need it is worth noting that, power supply change-over device of the present invention is using neutral-point-clamped framework (Neutral Point Clamped, NPC), therefore, the voltage stress that each transistor of conducting is born can be reduced, and reduce cutting for the transistor Loss is changed, and then reduces circuit loss and cost.
In conclusion power supply change-over device of the present invention has the advantage that
1. can be switched between four kinds of voltage translative mode and can transmitted in both directions: by first switch unit 2 and this second The switching of the second switch S2 and third switch S3 of switch unit 3, then cooperate the M group electricity of the voltage conversion unit 1 The conduction status of crystal unit enables the power supply change-over device to reach dc-dc by same circuit device and converts, directly It flow to exchange conversion, AC to DC conversion and exchange two-way eight state sample implementation changed of best friend's circulation.
2. reducing the voltage stress of the transistor of conducting: power supply change-over device of the present invention is to apply neutral-point-clamped framework, Therefore, the voltage stress of each transistor of conducting can be greatly reduced, and then reduce circuit loss.
So power supply change-over device of the present invention can reach the purpose of the present invention really.
As described above, only presently preferred embodiments of the present invention, when cannot be limited the scope of implementation of the present invention with this, It is i.e. all according to simple equivalent changes and modifications made by claims of the present invention and description, all still belong to model of the invention It encloses.

Claims (10)

1. a kind of power supply change-over device is electrically connected to one first alternating current unit and one first direct current component, first alternating current unit With one first port, which has one first port, which is operable in a dc-dc and turns Mold changing formula flow to always exchange translative mode, an AC to DC translative mode and an exchange best friend and flows translative mode, special Sign is, and includes:
One voltage conversion unit, including one first port and one second port, and by control to switch on four kinds of voltage translative mode between, Four kinds of voltage translative mode are to flow to exchange conversion, dc-dc conversion, AC to DC conversion, one always respectively Exchange best friend's circulation is changed；And
One first switch unit is electrically connected the first port of first alternating current unit, the first port of first direct current component and the electricity Between the first port for pressing converting unit, and made the first port of first alternating current unit and the first port of the voltage conversion unit by control Between switching on conducting and being not turned on, the first port of first direct current component and the first port of the voltage conversion unit is made to switch on and lead Between leading to and being not turned on, when first port at the first port of first alternating current unit and the voltage conversion unit is on, then should First port of the first direct current component and the first port of the voltage conversion unit are in and are not turned on, on the contrary, when first exchange is single First port of member and the first port of the voltage conversion unit are in when being not turned on, then the first port of first direct current component and the electricity First port of pressure converting unit is on；
When the power supply change-over device, which operates in direct current best friend, flows translative mode, which is kept this first straight by control The first port and the first port of the voltage conversion unit for flowing unit switch on conducting, the voltage conversion unit receive come from this first One first DC voltage of direct current component, and first DC voltage is carried out after direct current best friend circulation changes, generate and from its Two ports export an AC switching voltage；
When the power supply change-over device operates in dc-dc translative mode, which is kept this first straight by control The first port and the first port of the voltage conversion unit for flowing unit switch on conducting, the voltage conversion unit receive come from this first First DC voltage of direct current component, and will after first DC voltage carries out dc-dc conversion, generate and from its Voltage is changed in circulation to the output of two ports always；
When the power supply change-over device operates in AC to DC translative mode, which is made first friendship by control The first port and the first port of the voltage conversion unit for flowing unit switch on conducting, the voltage conversion unit receive come from this first One first alternating voltage of alternating current unit, and will after first alternating voltage carries out AC to DC conversion, generate and from its Two ports export direct current conversion voltage；
When the power supply change-over device, which operates in exchange best friend, flows translative mode, which is made first friendship by control The first port and the first port of the voltage conversion unit for flowing unit switch on conducting, and the voltage conversion unit is by first alternating current Pressure carry out exchange best friend circulation change after, generate simultaneously export the AC switching voltage from its second port.
2. power supply change-over device according to claim 1, which is characterized in that the power supply change-over device is also electrically coupled to one Between two alternating current units and one second direct current component, which has one first port, which has one First port, the power supply change-over device also include
One second switch unit is electrically connected the second port of the voltage conversion unit to receive the AC switching voltage and the direct current and turn It changes voltage one of to be exported, and cuts the first port of second alternating current unit and the second port of the voltage conversion unit by control It changes between being connected and being not turned on, the second port of the first port for making second direct current component and the voltage conversion unit switches on conducting Between being not turned on, when the second port of the first port of second alternating current unit and the voltage conversion unit is on, then this First port of two direct current components and the second port of the voltage conversion unit are in and are not turned on, on the contrary, working as second alternating current unit The first port and the second port of the voltage conversion unit be in when being not turned on, then the first port of second direct current component and the voltage Second port of converting unit is on,
When the power supply change-over device operates in direct current best friend stream translative mode and exchange best friend flows each of translative mode, Second switch unit is made the first port of second alternating current unit and the second port of the voltage conversion unit switch on and lead by control Logical, which exports via second switch unit to second alternating current unit,
When the power supply change-over device operates in each of AC to DC translative mode and the dc-dc translative mode, Second switch unit is made the first port of second direct current component and the second port of the voltage conversion unit switch on and lead by control Logical, direct current conversion voltage is exported via second switch unit to second direct current component.
3. power supply change-over device according to claim 1, which is characterized in that the voltage conversion unit includes
One first capacitor has a first end and a second end,
One second capacitor, the first end and a second end of the second end for being electrically connected the first capacitor with one,
One first conversion circuit is electrically connected the first capacitor and the first end and the second end of second capacitor, and electricity First port of the voltage conversion unit is connected to receive one of first alternating voltage and first DC voltage, and controlled System operates in the conversion of AC to DC voltage or the conversion of dc-dc voltage, and
One second conversion circuit is electrically connected the first capacitor and the first end and the second end of second capacitor, and electricity Second port of the voltage conversion unit is connected, and is operated in direct current to alternating voltage conversion or dc-dc voltage by control Conversion,
When the power supply change-over device operates in dc-dc translative mode, first port of the voltage conversion unit receives should First DC voltage, first conversion circuit first DC voltage is carried out after dc-dc conversion to the first capacitor and Voltage in the first capacitor and second capacitor is carried out direct current to straight by second capacitor charging, second conversion circuit Circulation generates direct current conversion voltage after changing, and the direct current is converted voltage output to second port of the voltage conversion unit；
When the power supply change-over device, which operates in direct current best friend, flows translative mode, first port of the voltage conversion unit receives should First DC voltage, first conversion circuit first DC voltage is carried out after dc-dc conversion to the first capacitor and Voltage in the first capacitor and second capacitor is carried out direct current best friend by second capacitor charging, second conversion circuit Circulation generates the AC switching voltage after changing, and the AC switching voltage is output to second port of the voltage conversion unit,
When the power supply change-over device operates in AC to DC translative mode, first port of the voltage conversion unit receives should First alternating voltage, first conversion circuit first alternating voltage is carried out after AC to DC conversion to the first capacitor and Voltage in the first capacitor and second capacitor is carried out direct current to straight by second capacitor charging, second conversion circuit Circulation generates direct current conversion voltage after changing, and the direct current is converted voltage output to second port of the voltage conversion unit,
When the power supply change-over device, which operates in exchange best friend, flows translative mode, first port of the voltage conversion unit receives should First alternating voltage, first conversion circuit first alternating voltage is carried out after AC to DC conversion to the first capacitor and Voltage in the first capacitor and second capacitor is carried out direct current best friend by second capacitor charging, second conversion circuit Circulation generates the AC switching voltage after changing, and the AC switching voltage is output to second port of the voltage conversion unit.
4. power supply change-over device according to claim 3, which is characterized in that first port of the voltage conversion unit has M first end and M second end, first conversion circuit include
M the first inductance, every one first inductance have a first end and a second end, and the first end of every one first inductance is electrically connected Person corresponding to the one of the M first end at first port of the voltage conversion unit is met, M is positive integer,
M the second inductance, every one second inductance have a first end and a second end, and the first end of every one second inductance is electrically connected Person corresponding to the one of the M second end at first port of the voltage conversion unit is met,
M first switch, each first switch have a first end, one control signal of a second end, a third end and a reception The 4th end, the third end of each first switch is electrically connected the second end of the corresponding person of the M the first inductance, and according to this The signal conduction third end and the second end or the alternative one at the third end and the first end are controlled, and
M group transistor unit, each group of transistor unit include one first transistor, one second transistor, a third transistor, One the 4th transistor, a first diode and one second diode,
First transistor has the first end of the first end, the second end and one controlled for being electrically connected the first capacitor Third end,
Second transistor have a first end, a second end and a controlled third end, second transistor this first End is electrically connected the second end of first transistor,
The third transistor have a first end, a second end and a controlled third end, the third transistor this first End is electrically connected the second end of second transistor,
4th transistor has a first end, the second end of the second end of electrical connection second capacitor and one is controlled Third end, the first end of the 4th transistor be electrically connected the third transistor second end and the M the second inductance one Second end,
The first diode has a cathode and an anode, and the cathode of the first diode is electrically connected being somebody's turn to do for first transistor The anode of second end, the first diode is electrically connected the second end of the first capacitor,
Second diode has a cathode and an anode, the cathode of second diode be electrically connected the first capacitor this Two ends, the anode of second diode are electrically connected the first end of the 4th transistor,
Wherein, the second end of first transistor of m group transistor unit is also electrically connected the second of n-th of first switch End, the first end of the second end m-th of first switch of electrical connection of second transistor of m group transistor unit, m=1~ M, n=M~1, M, m, n are positive integer.
5. power supply change-over device according to claim 4, which is characterized in that first port of first alternating current unit has First port at M end, first direct current component has a first end and a second end, which includes
M second switch, each second switch receive the control signal with a first end, a second end, a third end and one The 4th end, the first end of the M second switch is electrically connected the M at first port of first alternating current unit End, the second end of the M second switch are electrically connected the first end at first port of first direct current component, the M a the The third end of two switches is electrically connected the M first end at first port of the voltage conversion unit, and
One third switch, the 4th end of the control signal is received with a first end, a second end, a third end and one, should The second end of third switch is electrically connected the M second end at first port of the voltage conversion unit, and third switch is somebody's turn to do Third end is electrically connected the second end at first port of first direct current component.
6. power supply change-over device according to claim 3, which is characterized in that second port of the voltage conversion unit has M first end and M second end, second conversion circuit include
M the first inductance, every one first inductance have a first end and a second end, and the first end of every one first inductance is electrically connected Person corresponding to the one of the M first end at second port of the voltage conversion unit is met, M is positive integer,
M the second inductance, every one second inductance have a first end and a second end, and the first end of every one second inductance is electrically connected Person corresponding to the one of the M second end at second port of the voltage conversion unit is met,
M first switch, each first switch have a first end, one control signal of a second end, a third end and a reception The 4th end, the third end of each first switch is electrically connected the second end of the corresponding person of the M the first inductance, and according to this The signal conduction third end and the second end or the alternative one at the third end and the first end are controlled,
M group transistor unit, each group of transistor unit include one first transistor, one second transistor, a third transistor, One the 4th transistor, a first diode and one second diode,
First transistor, the first end of the first end, a second end and one with the electrical connection first capacitor are controlled Third end,
Second transistor have a first end, a second end and a controlled third end, second transistor this first End is electrically connected the second end of first transistor,
The third transistor have a first end, a second end and a controlled third end, the third transistor this first End is electrically connected the second end of second transistor,
4th transistor has a first end, the second end of the second end of electrical connection second capacitor and one is controlled Third end, the first end of the 4th transistor be electrically connected the third transistor second end and the M the second inductance one Second end,
The first diode has a cathode and an anode, and the cathode of the first diode is electrically connected being somebody's turn to do for first transistor The anode of second end, the first diode is electrically connected the second end of the first capacitor, and
Second diode has a cathode and an anode, the cathode of second diode be electrically connected the first capacitor this Two ends, the anode of second diode are electrically connected the first end of the 4th transistor,
Wherein, the second end of first transistor of m group transistor unit is also electrically connected the second of m-th of first switch End, the first end of the second end m-th of first switch of electrical connection of second transistor of m group transistor unit, m=1~ M, M, m are positive integer.
7. power supply change-over device according to claim 2, which is characterized in that first port of second alternating current unit has First port at M end, second direct current component has a first end and a second end, second port of the voltage conversion unit With M first end and M second end, which includes
M second switch, each second switch have a first end, one control signal of a second end, a third end and a reception The 4th end, the first end of the M second switch is electrically connected the M at first port of second alternating current unit End, the second end of the M second switch are electrically connected the first end at first port of second direct current component, the M a the The third end of two switches is electrically connected the M first end at second port of the voltage conversion unit, and
One third switch, the 4th end of the control signal is received with a first end, a second end, a third end and one, should The second end of third switch is electrically connected the M second end at second port of the voltage conversion unit, and third switch is somebody's turn to do Third end is electrically connected the second end at first port of first direct current component.
8. power supply change-over device according to claim 2, which is characterized in that
When the power supply change-over device, which operates in direct current best friend, flows translative mode, which is kept this second straight by control The first port and the second port of the voltage conversion unit for flowing unit switch on conducting, first switch unit by control make this first First port of alternating current unit and the first port of the voltage conversion unit switch on conducting, then the voltage conversion unit by this second directly After galvanic electricity presses progress direct current best friend circulation to change, generates and simultaneously export the AC switching voltage to the first exchange list from its first port Member,
When the power supply change-over device operates in dc-dc translative mode, which is kept this second straight by control The first port and the second port of the voltage conversion unit for flowing unit switch on conducting, first switch unit by control make this first First port of direct current component and the first port of the voltage conversion unit switch on conducting, then the voltage conversion unit by this second directly After galvanic electricity pressure carries out dc-dc conversion, generates and export the direct current from its first port and convert voltage to the first direct current list Member,
When the power supply change-over device operates in AC to DC translative mode, which is made second friendship by control The first port and the second port of the voltage conversion unit for flowing unit switch on conducting, first switch unit by control make this first First port of direct current component and the first port of the voltage conversion unit switch on conducting, then the voltage conversion unit second hands over this After galvanic electricity pressure carries out AC to DC conversion, generates and export the direct current from its first port and convert voltage to the first direct current list Member, and
When the power supply change-over device, which operates in exchange best friend, flows translative mode, which is made second friendship by control The first port and the second port of the voltage conversion unit for flowing unit switch on conducting, first switch unit by control make this first First port of alternating current unit and the first port of the voltage conversion unit switch on conducting, then the voltage conversion unit second hands over this Galvanic electricity pressure carries out after exchange best friend's circulation changes, and generates that simultaneously to export the AC switching voltage from its first port single to first exchange Member.
9. power supply change-over device according to claim 8, which is characterized in that the voltage conversion unit includes
One first capacitor has a first end and a second end,
One second capacitor, the first end and a second end of the second end for being electrically connected the first capacitor with one,
One first conversion circuit is electrically connected the first capacitor and the first end and the second end of second capacitor, and electricity First port of the voltage conversion unit is connected, and is operated in direct current to alternating voltage conversion or dc-dc voltage by control Conversion, and
One second conversion circuit is electrically connected the first capacitor and the first end and the second end of second capacitor, and electricity Second port of the voltage conversion unit is connected to receive the one of them of second alternating voltage and second DC voltage, and The conversion of AC to DC voltage or the conversion of dc-dc voltage are operated in by control,
When the power supply change-over device operates in dc-dc translative mode, second port of the voltage conversion unit receives should Second DC voltage, second conversion circuit second DC voltage is carried out after dc-dc conversion to the first capacitor and Voltage in the first capacitor and second capacitor is carried out direct current to straight by second capacitor charging, first conversion circuit Circulation generates direct current conversion voltage after changing, and the direct current is converted voltage output to first port of the voltage conversion unit；
When the power supply change-over device, which operates in direct current best friend, flows translative mode, second port of the voltage conversion unit receives should Second DC voltage, second conversion circuit second DC voltage is carried out after dc-dc conversion to the first capacitor and Voltage in the first capacitor and second capacitor is carried out direct current best friend by second capacitor charging, first conversion circuit Circulation generates the AC switching voltage after changing, and the AC switching voltage is output to first port of the voltage conversion unit,
When the power supply change-over device operates in AC to DC translative mode, second port of the voltage conversion unit receives should Second alternating voltage, second conversion circuit second alternating voltage is carried out after AC to DC conversion to the first capacitor and Voltage in the first capacitor and second capacitor is carried out direct current to straight by second capacitor charging, first conversion circuit Circulation generates direct current conversion voltage after changing, and the direct current is converted voltage output to first port of the voltage conversion unit,
When the power supply change-over device, which operates in exchange best friend, flows translative mode, second port of the voltage conversion unit receives should Second alternating voltage, second conversion circuit second alternating voltage is carried out after AC to DC conversion to the first capacitor and Voltage in the first capacitor and second capacitor is carried out direct current best friend by second capacitor charging, first conversion circuit Circulation generates the AC switching voltage after changing, and the AC switching voltage is output to first port of the voltage conversion unit.
10. power supply change-over device according to claim 1, which is characterized in that when first alternating current unit is three-phase alternating current When voltage source, which provides first alternating voltage.
CN201710801371.3A 2017-09-07 2017-09-07 Power supply change-over device Pending CN109474198A (en)

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Application Number Priority Date Filing Date Title
CN201710801371.3A CN109474198A (en) 2017-09-07 2017-09-07 Power supply change-over device

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Application Number Priority Date Filing Date Title
CN201710801371.3A CN109474198A (en) 2017-09-07 2017-09-07 Power supply change-over device

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CN109474198A true CN109474198A (en) 2019-03-15

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Citations (3)

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Publication number Priority date Publication date Assignee Title
US20130039104A1 (en) * 2011-02-03 2013-02-14 Viswa N. Sharma Bidirectional multimode power converter
CN204376728U (en) * 2015-01-08 2015-06-03 上海英同电气有限公司 A kind of three level four-quadrant low voltage frequency converter circuit
CN105871205A (en) * 2016-05-06 2016-08-17 华南理工大学 Integrated multifunctional power source switching system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130039104A1 (en) * 2011-02-03 2013-02-14 Viswa N. Sharma Bidirectional multimode power converter
CN204376728U (en) * 2015-01-08 2015-06-03 上海英同电气有限公司 A kind of three level four-quadrant low voltage frequency converter circuit
CN105871205A (en) * 2016-05-06 2016-08-17 华南理工大学 Integrated multifunctional power source switching system

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Application publication date: 20190315