CN101834529B - Boost, buck and boost-buck secondary side adjusting three-port direct current converter - Google Patents
Boost, buck and boost-buck secondary side adjusting three-port direct current converter Download PDFInfo
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Abstract
The invention provides a secondary side adjusting three-port direct current converter, which belongs to the technical field of power electronic converters. The three-port direct current converter consists of an input direct current source, a storage battery, a load, a primary side circuit and a secondary side circuit; the primary side circuit is connected with the input direct current source and the storage battery and comprises three forms, namely boost, buck and boost-buck forms; and the primary side circuit comprises two circuit forms. The three-port direct current converter is characterized in that the power management of the input direct current source, the storage battery and the load is realized through the converter, and the functions of multiple single-input single-output converters are realized. Compared with a mode of adopting multiple converters, the three-port direct current converter has the advantages of reducing the number of switching devices and related control circuits, improving the conversion efficiency, simplifying the control circuit, reaching high reliability, improving the stability of the system by adopting more compact layout and uniform and effective management, reducing the cost of the system, reducing the volume and improving the power density.
Description
Technical field:
The present invention relates to secondary adjustment type three-port DC converter, belong to the converters technical field, the power inverter technical field in the particularly generation of electricity by new energy technical field.
Background technology:
Along with energy crisis and problem of environmental pollution are serious day by day, generation of electricity by new energy technology such as solar energy, wind energy, fuel cell become that countries in the world are paid close attention to and the focus of research.Whether grid-connected power generation system according to linking to each other with public electric wire net, being divided into is incorporated into the power networks and the independent operating dual mode.The grid-connected power generation system of independent operating is very important a kind of mode that generation of electricity by new energy is used; Can solve the powerup issue in no electrical network such as remote mountain areas, isolated island area; In addition; The electric power system structural similarity of the structure of independent grid-connected power generation system and electric automobile, hybrid vehicle, therefore the research to independent grid-connected power generation system can further be applied to new technical field such as electric automobile.
The intrinsic defective of generation of electricity by new energy equipment has been brought some a new difficult problem and challenges, as: the response speed of fuel cell is slower, and power output can not in time be followed the tracks of the variation of load; Wind energy, solar power generation can not continue owing to receive the influence that natural conditions such as wind speed, wind direction, intensity of sunshine, ambient temperature change, stable output electric energy, causes the increase of stability of a system problem.Therefore, the grid-connected power generation system of independent operating must be equipped with the energy storage device of a constant volume.Energy storage device plays energy balance and supporting role; The peak power in short-term of timely replenishment system; Reclaim surplus power, guarantee the continuity and the reliability of power supply, improve the utilance of electric energy; And make generating equipment when the fluctuation of power output or bearing power is big, still can keep good stable property.
The typical structure of new forms of energy stand alone generating system that comprises the energy storage link is shown in accompanying drawing 1.New forms of energy stand alone generating system shown in the accompanying drawing 1 is made up of unidirectional DC/DC converter and two-way DC/DC converter; The monotonic transformation device is realized the power management of main power source to load; Link to each other with the storage battery energy management of realization system of reversible transducer, when the main power source energy was sufficient, main power source was to charge in batteries; When the main power source energy shortage, storage battery discharges to electric through reversible transducer.The system that accompanying drawing 1 is made up of two independent converters, its converter decentralized control, volume weight is bigger; Shown in the accompanying drawing 1 (a) in the system, storage battery need pass through Two Stages during for electric, and shown in the accompanying drawing 1 (b) in the system, main power source need pass through Two Stages during for charge in batteries, and conversion progression is many, and system effectiveness is low.
Summary of the invention
Goal of the invention:
Technical problem to be solved by this invention is the deficiency to prior art, provides a kind of and only can realize importing DC source, storage battery and bearing power management and the secondary adjustment type three-port DC converter of controlling simultaneously through a converter.
Technical scheme:
The present invention adopts following three kinds of technical schemes for realizing the foregoing invention purpose:
A kind of buck secondary side adjusting three-port direct current converter comprises input DC source V
In, storage battery V
b, former limit circuit, secondary circuit and load R
o, former limit circuit comprises first capacitor C
1, the first switching tube S
1, second switch pipe S
2And the former limit of transformer winding N
P, secondary circuit comprises the transformer first secondary winding (N
S1), the transformer second secondary winding N
S2, the 3rd switching tube S
3, the first diode D
1, the second diode D
2, the 3rd diode D
3, filter inductance L
oWith filter capacitor C
oFormer limit circuit respectively with input DC source V
InAnd storage battery V
bBe connected secondary circuit and load R
oBe connected, wherein import DC source V
InPositive pole respectively with first capacitor C
1An end and the first switching tube S
1Drain electrode link to each other input DC source V
InNegative pole respectively with first capacitor C
1The other end, second switch pipe S
2Source electrode and storage battery V
bNegative pole link to each other the first switching tube S
1Source electrode respectively with second switch pipe S
2Drain electrode and the former limit of transformer winding N
PEnd of the same name link to each other the former limit of transformer winding N
PNon-same polarity and storage battery V
bPositive pole link to each other;
The transformer first secondary winding N
S1The end of the same name and the first diode D
1Anode connect the transformer first secondary winding N
S1Non-same polarity respectively with the transformer second secondary winding N
S2End of the same name, the 3rd diode D
3Anode, filter capacitor C
oAn end and load R
oAn end connect the transformer second secondary winding N
S2The non-same polarity and the second diode D
2Anode connect the second diode D
2Negative electrode and the 3rd switching tube S
3Drain electrode connect the 3rd switching tube S
3Source electrode respectively with the first diode D
1Negative electrode, the 3rd diode D
3Negative electrode, and filter inductance L
oAn end connect filter inductance L
oThe other end respectively with filter capacitor C
oThe other end, load R
oThe other end connect.
Further, buck secondary side adjusting three-port direct current converter of the present invention, the circuit connecting relation of secondary circuit is: the transformer first secondary winding N
S1The end of the same name and the first diode D
1Anode connect the transformer first secondary winding N
S1Non-same polarity respectively with the transformer second secondary winding N
S2End of the same name, the 3rd diode D
3Anode, filter capacitor C
oAn end and load R
oAn end connect the transformer second secondary winding N
S2The non-same polarity and the second diode D
2Anode connect the second diode D
2Negative electrode respectively with the first diode D
1Negative electrode and the 3rd switching tube S
3Drain electrode connect the 3rd switching tube S
3Source electrode and the 3rd diode D
3Negative electrode, filter inductance L
oAn end connect filter inductance L
oThe other end respectively with filter capacitor C
oThe other end, load R
oThe other end connect the former limit of the transformer winding N in the circuit of former limit
PBe coupled through a magnetic core of transformer with the transformer secondary winding in the secondary circuit.
A kind of boost type secondary side adjusting three-port direct current converter comprises input DC source V
In, storage battery V
b, former limit circuit, secondary circuit and load R
o, former limit circuit comprises first capacitor C
1, the first switching tube S
1, second switch pipe S
2And the former limit of transformer winding N
P, secondary circuit comprises the transformer first secondary winding N
S1, the transformer second secondary winding N
S2, the 3rd switching tube S
3, the first diode D
1, the second diode D
2, the 3rd diode D
3, filter inductance L
oWith filter capacitor C
oFormer limit circuit respectively with input DC source V
InAnd storage battery V
bBe connected secondary circuit and load R
oBe connected input DC source V
InPositive pole respectively with first capacitor C
1An end and former limit winding N
PEnd of the same name link to each other input DC source V
InNegative pole respectively with first capacitor C
1The other end, the first switching tube S
1Source electrode and storage battery V
bNegative pole link to each other former limit winding N
PNon-same polarity respectively with the first switching tube S
1Drain electrode and second switch pipe S
2Source electrode link to each other second switch pipe S
2Drain electrode and storage battery V
bPositive pole link to each other;
The transformer first secondary winding N
S1The end of the same name and the first diode D
1Anode connect the transformer first secondary winding N
S1Non-same polarity respectively with the transformer second secondary winding N
S2End of the same name, the 3rd diode D
3Anode, filter capacitor C
oAn end and load R
oAn end connect the transformer second secondary winding N
S2The non-same polarity and the second diode D
2Anode connect the second diode D
2Negative electrode respectively with the first diode D
1Negative electrode and the 3rd switching tube S
3Drain electrode connect the 3rd switching tube S
3Source electrode respectively with the 3rd diode D
3Negative electrode and filter inductance L
oAn end connect filter inductance L
oThe other end respectively with filter capacitor C
oThe other end and load R
oThe other end connect.
Further, boost type secondary side adjusting three-port direct current converter of the present invention, the circuit connecting relation of secondary circuit is: the transformer first secondary winding N
S1The end of the same name and the first diode D
1Anode connect the transformer first secondary winding N
S1Non-same polarity respectively with the transformer second secondary winding N
S2End of the same name, the 3rd diode D
3Anode, filter capacitor C
oAn end and load R
oAn end connect the transformer second secondary winding N
S2The non-same polarity and the second diode D
2Anode connect the second diode D
2Negative electrode and the 3rd switching tube S
3Drain electrode connect the 3rd switching tube S
3Source electrode respectively with the first diode D
1Negative electrode, the 3rd diode D
3Negative electrode, filter inductance L
oAn end connect filter inductance L
oThe other end respectively with filter capacitor C
oThe other end, load R
oThe other end connect; The former limit of transformer winding N in the circuit of former limit
PWith the transformer secondary winding N in the secondary circuit
S1With N
S2Be coupled through a magnetic core of transformer.
A kind of step-down/up type secondary side adjusting three-port direct current converter comprises input DC source V
In, storage battery V
b, former limit circuit, secondary circuit and load R
o, former limit circuit comprises first capacitor C
1, the first switching tube S
1, second switch pipe S
2And the former limit of transformer winding N
P, secondary circuit comprises the transformer first secondary winding N
S1, the transformer second secondary winding N
S2, the 3rd switching tube S
3, the first diode D
1, the second diode D
2, the 3rd diode D
3, filter inductance L
oWith filter capacitor C
oFormer limit circuit respectively with input DC source V
InAnd storage battery V
bBe connected secondary circuit and load R
oBe connected former limit circuit and input DC source V
InAnd storage battery V
bAnnexation be: input DC source V
InPositive pole be connected in first capacitor C respectively
1An end and the first switching tube S
1Drain electrode, input DC source V
InNegative pole be connected in first capacitor C respectively
1The former limit of the other end, transformer winding N
PNon-same polarity and storage battery V
bPositive pole, the former limit of transformer winding N
PEnd of the same name respectively with the first switching tube S
1Source electrode and second switch pipe S
2Drain electrode link to each other second switch pipe S
2Source electrode and storage battery V
bNegative pole link to each other;
The transformer first secondary winding N
S1The end of the same name and the first diode D
1Anode connect the transformer first secondary winding (N
S1) non-same polarity respectively with the transformer second secondary winding N
S2End of the same name, the 3rd diode D
3Anode, filter capacitor C
oAn end and load R
oAn end connect the transformer second secondary winding N
S2The non-same polarity and the second diode D
2Anode connect the second diode D
2Negative electrode respectively with the first diode D
1Negative electrode and the 3rd switching tube S
3Drain electrode connect the 3rd switching tube S
3Source electrode respectively with the 3rd diode D
3Negative electrode and filter inductance L
oAn end connect filter inductance L
oThe other end respectively with filter capacitor C
oThe other end and load R
oThe other end connect.
Further, step-down/up type secondary side adjusting three-port direct current converter of the present invention, the circuit connecting relation of secondary circuit is: the transformer first secondary winding N
S1The end of the same name and the first diode D
1Anode connect the transformer first secondary winding N
S1Non-same polarity respectively with the transformer second secondary winding N
S2End of the same name, the 3rd diode D
3Anode, filter capacitor C
oAn end and load R
oAn end connect the transformer second secondary winding N
S2The non-same polarity and the second diode D
2Anode connect the second diode D
2Negative electrode and the 3rd switching tube S
3Drain electrode connect the 3rd switching tube S
3Source electrode respectively with negative electrode, the negative electrode of the 3rd diode D3, the filter inductance L of the first diode D1
oAn end connect filter inductance L
oThe other end respectively with filter capacitor C
oThe other end, load R
oThe other end connect; The former limit of transformer winding N in the circuit of former limit
PWith the transformer secondary winding N in the secondary circuit
S1With N
S2Be coupled through a magnetic core of transformer.
Beneficial effect:
The present invention has realized the power management and the control of main power source, storage battery and load through a converter, has realized the functions of the single output translator of a plurality of single inputs, with respect to the system that adopts a plurality of converters to constitute, has following outstanding advantage:
(1) reduces device and relevant control circuit, reduced power loss, improved conversion efficiency;
(2) reduce system bulk, realized high power density;
(3) whole converter becomes as a whole, can adopt centralized control, realizes more effectively management;
(4) can adopt compact more layout, improve the stability of system;
(5) lowered the cost of system.
(6) secondary adjustment type three-port DC converter of the present invention, the control of storage battery end and load end is relatively independent, and therefore control is simple, is easy to realize.
Description of drawings:
Accompanying drawing 1 is the exemplary block diagram that comprises the independent grid-connected power generation system of energy storage link;
Accompanying drawing 2 is the circuit structure diagram of secondary adjustment type three-port DC converter of the present invention;
Accompanying drawing 3 (a)～Fig. 3 (c) is the circuit diagram of three kinds of former limits of secondary adjustment type three-port DC converter of the present invention circuit;
Accompanying drawing 4 (a), Fig. 4 (b) are the circuit diagram of two kinds of secondary circuits of secondary adjustment type three-port DC converter of the present invention;
Accompanying drawing 5 (a), Fig. 5 (b) are the circuit diagram of two kinds of buck secondary adjustment type three-port DC converters;
Accompanying drawing 6 (a), Fig. 6 (b) are the circuit diagram of two kinds of boost type secondary adjustment type three-port DC converters;
Accompanying drawing 7 (a), Fig. 7 (b) are the circuit diagram of two kinds of step-down/up type secondary adjustment type three-port DC converters;
The equivalent electric circuit of mode 1～mode 3 when accompanying drawing 8 (a)～accompanying drawing 8 (c) is operated in the charge in batteries pattern for buck secondary adjustment type three-port DC converter of the present invention;
Groundwork oscillogram when accompanying drawing 9 is operated in the charge in batteries pattern for buck secondary adjustment type three-port DC converter of the present invention;
Equivalent circuit diagram when accompanying drawing 10 is operated in the battery discharging pattern for buck secondary adjustment type three-port DC converter of the present invention.
The former limit of symbol description among the figure: 10-circuit; The 20-secondary circuit; V
In-input DC source; V
b-storage battery; R
o-load; N
PThe former limit of-transformer winding; N
S1, N
S2First, second secondary winding of-transformer; S
1, S
2, S
3-first, second and third switching tube; D
1, D
2, D
3-first, second and third diode; C
1-the first electric capacity; C
o-filter capacitor; L
o-filter inductance; v
GS1, v
GS2, v
GS3Be respectively the driving voltage of first, second and third switching tube; v
DS1, v
DS2Be respectively the voltage between first, second switching tube drain electrode and the source electrode; i
PThe former limit of-transformer winding current, the sense of current is shown in arrow in the accompanying drawing 8; i
Lo-filter inductance electric current, the sense of current is shown in arrow in the accompanying drawing 8;
Specific embodiments:
Below in conjunction with accompanying drawing the enforcement of technical scheme is done further to describe in detail:
In order to narrate conveniently, below in conjunction with accompanying drawing 2～accompanying drawing 7 explanations technical scheme of the present invention.The basic thought of present technique scheme is that isolated converter and non-isolation reversible transducer are integrated together; Realize the connection of three ports; In the secondary side rectification circuit of transformer, add the adjusting that switching tube is realized load voltage simultaneously, thereby realize the control of storage battery and load voltage simultaneously.Its circuit structure of secondary adjustment type three-port DC converter is shown in accompanying drawing 2, and circuit is by input DC source V
In, storage battery V
b, former limit circuit 10, secondary circuit 20 and load R
oConstitute, wherein, former limit circuit 10 and input DC source V
InAnd storage battery V
bLink to each other, comprise boost type, buck and three kinds of forms of step-down/up type, by first capacitor C
1, the first switching tube S
1, second switch pipe S
2And the former limit of transformer winding N
PConstitute; Secondary circuit 20 and load R
oLink to each other, by the transformer first secondary winding NS
1, the transformer second secondary winding N
S2, the 3rd switching tube S
3, the first diode D
1, the second diode D
2, the 3rd diode D
3, filter inductance L
oWith filter capacitor C
oConstitute, secondary circuit 20 comprises first, second two kinds of forms.
Shown in accompanying drawing 3, former limit circuit 10 and input DC source V
InAnd storage battery V
bLink to each other, comprise boost type, buck and three kinds of forms of step-down/up type, by first capacitor C
1, the first switching tube S
1, second switch pipe S
2And the former limit of transformer winding N
PConstitute, wherein:
The former limit of buck circuit 10 and input DC source V
InAnd storage battery V
bAnnexation be: input DC source V
InPositive pole respectively with first capacitor C
1An end and the first switching tube S
1Drain electrode link to each other input DC source V
InNegative pole respectively with first capacitor C
1The other end, second switch pipe S
2Source electrode and storage battery V
bNegative pole link to each other the first switching tube S
1Source electrode respectively with second switch pipe S
2Drain electrode and the former limit of transformer winding N
PEnd of the same name link to each other the former limit of transformer winding N
PNon-same polarity and storage battery V
bPositive pole link to each other.
The former limit of boost type circuit 10 and input DC source V
InAnd storage battery V
bAnnexation be: input DC source V
InPositive pole respectively with first capacitor C
1An end and former limit winding N
PEnd of the same name link to each other input DC source V
InNegative pole respectively with first capacitor C
1The other end, the first switching tube S
1Source electrode and storage battery V
bNegative pole link to each other former limit winding N
PThe non-same polarity and the first switching tube S
1Drain electrode and second switch pipe S
2Source electrode link to each other second switch pipe S
2Drain electrode and storage battery V
bPositive pole link to each other.
The former limit of step-down/up type circuit 10 and input DC source V
InAnd storage battery V
bAnnexation be: input DC source V
InPositive pole be connected in first capacitor C respectively
1An end and the first switching tube S
1Drain electrode, input DC source V
InNegative pole be connected in first capacitor C respectively
1The former limit of the other end, transformer winding N
PNon-same polarity and storage battery V
bPositive pole, the former limit of transformer winding N
PEnd of the same name respectively with the first switching tube S
1Source electrode and second switch pipe S
2Drain electrode link to each other second switch pipe S
2Source electrode and storage battery V
bNegative pole link to each other.
Shown in accompanying drawing 4, secondary circuit 20 and load R
oLink to each other, by the transformer first secondary winding N
S1, the transformer second secondary winding N
S2, the 3rd switching tube S
3, the first diode D
1, the second diode D
2, the 3rd diode D
3, filter inductance L
oWith filter capacitor C
oConstitute, secondary circuit 20 comprises first, second two kinds of forms, wherein:
The circuit connecting relation of the first form secondary circuit 20 is: the transformer first secondary winding (N
S1) end of the same name be connected in the first diode D
1Anode, the transformer first secondary winding N
S1Non-same polarity be connected in the transformer second secondary winding N respectively
S2End of the same name, the 3rd diode D
3Anode, filter capacitor C
oAn end and load R
oAn end, the transformer second secondary winding N
S2Non-same polarity be connected in the second diode D
2Anode, the second diode D
2Negative electrode be connected in the 3rd switching tube S
3Drain electrode, the 3rd switching tube S
3Source electrode be connected in negative electrode, and the filter inductance L of negative electrode, the 3rd diode D3 of the first diode D1
oAn end, filter inductance L
oThe other end be connected in filter capacitor C respectively
oThe other end and load R
oThe other end.
The circuit connecting relation of the second form secondary circuit 20 is: the transformer first secondary winding N
S1End of the same name be connected in the first diode D
1Anode, the transformer first secondary winding N
S1Non-same polarity be connected in the transformer second secondary winding N respectively
S2End of the same name, the 3rd diode D
3Anode, filter capacitor C
oAn end and load R
oAn end, the transformer second secondary winding N
S2Non-same polarity be connected in the second diode D
2Anode, the second diode D
2Negative electrode be connected in the first diode D respectively
1Negative electrode and the 3rd switching tube S
3Drain electrode, the 3rd switching tube S
3Source electrode be connected in the 3rd diode D
3Negative electrode and filter inductance L
oAn end, filter inductance L
oThe other end be connected in filter capacitor C respectively
oThe other end and load R
oThe other end.
Secondary adjustment type three-port DC converter according to the invention, the former limit of the transformer winding N in the former limit circuit 10
PWith the transformer secondary winding N in the secondary circuit 20
S1With N
S2Be coupled through a magnetic core of transformer.
Accompanying drawing 5 is depicted as two kinds of buck secondary adjustment type three-port DC converters of the former limit of buck circuit 10 and secondary circuit 20 formations; Accompanying drawing 6 is depicted as two kinds of boost type secondary adjustment type three-port DC converters of the former limit of boost type circuit 10 and secondary circuit 20 formations; Accompanying drawing 7 is depicted as two kinds of step-down/up type secondary adjustment type three-port DC converters of the former limit of step-down/up type circuit 10 and secondary circuit 20 formations.
Buck secondary adjustment type three-port DC converter shown in the accompanying drawing 5 is applicable to storage battery V
bVoltage ratio direct current input source V
InThe low application scenario of voltage; Boost type secondary adjustment type three-port DC converter shown in the accompanying drawing 6 is applicable to storage battery V
bVoltage greater than input DC source V
InThe application scenario; Step-down/up type secondary adjustment type three-port DC converter shown in the accompanying drawing 7 is applicable to storage battery V
bVoltage can be greater than input DC source V
InVoltage also can be less than or equal to input DC source V
InThe application scenario of voltage.
The former limit of transformer winding N in the secondary adjustment type three-port DC converter of the present invention
PCharging process for storage battery is equivalent to inductance, and the transformer in the three-port DC converter promptly of the present invention needs the concrete storage battery V that combines simultaneously as inductance and transformer when actual design
bWith load R
oVoltage and watt level require to design.
Working state analysis according to storage battery; Secondary adjustment type three-port DC converter of the present invention has two kinds of mode of operations; Be charge in batteries pattern and battery discharging pattern, when input DC source energy was sufficient, the input DC source powered to the load to charge in batteries simultaneously; When the input DC source provide energy shortage the time, storage battery with the input DC source power to the load jointly or storage battery power to the load separately.Buck secondary adjustment type three-port DC converter with shown in the accompanying drawing 5 (a) is an example, and its concrete operation principle is described, supposes that the turn ratio of the former secondary winding of transformer satisfies following relation: N
P: N
S1: N
S2=1: n: n, n suppose filter capacitor C simultaneously greater than 0
oEnough big, output voltage is level and smooth direct current.
When converter is operated in the charge in batteries pattern, the first switching tube S
1,, second switch pipe S
2And the 3rd switching tube S
3In turn conducting, wherein S in a switch periods
1With S
2The first switching tube S is supposed in complementary conducting
1,, second switch pipe S
2And the 3rd switching tube S
3Duty ratio be respectively d
1, d
2, d
3, then have: d
1+ d
2=1, converter has three kinds of switch mode in a switch periods:
1: the first switching tube S of mode
1Conducting, second switch pipe S
2, the 3rd switching tube S
3Turn-off the former limit of transformer winding N
PCurrent i
PForward increases, secondary circuit 20 first diode D
1Conducting, the second diode D
2, the 3rd diode D
3Turn-off filter inductance L
oCurrent i
LoLinear increasing, the equivalent electric circuit of this mode is shown in Fig. 8 (a);
Mode 2: second switch pipe S
2Conducting, the first switching tube S
1, the 3rd switching tube S
3Turn-off the former limit of transformer winding N
PCurrent i
PForward reduces, secondary circuit 20 first diode D
1, the second diode D
2Turn-off the 3rd diode D
3Conducting, filter inductance L
oCurrent i
LoLinearity reduces, and the equivalent electric circuit of this mode is shown in Fig. 8 (b);
Mode 3: second switch pipe S
2, the 3rd switching tube S
3Conducting, the first switching tube S
1Turn-off the former limit of transformer winding N
PCurrent i
PNegative sense increases, secondary circuit 20 first switching tube D
1, the 3rd diode D
3Turn-off the second diode D
2Conducting, filter inductance L
oCurrent i
LoThe linear increase, the equivalent electric circuit of this mode is shown in Fig. 8 (c).
The groundwork waveform of converter under the charge in batteries pattern is as shown in Figure 9.
Can know according to the weber equilibrium relation of transformer in a switch periods: (V
In-V
b) d
1=V
bd
2=V
b(1-d
1), therefore: V
b=V
Ind
1, promptly the voltage of storage battery is by the first switching tube (S
1) decision of duty ratio size.
Weber equilibrium relation according to filter inductance can be known: n [(V
In-V
b) d
1+ V
bd
3]=V
o, promptly the size of output voltage is by switching tube S
1And S
3Duty ratio size decision.
Can know that according to above-mentioned analysis this converter has been realized the control of output voltage and battery tension simultaneously, promptly realize the power management between input DC source, storage battery and the load.
When the input DC source can not provide the load power demand fully, when converter is operated in the battery discharging pattern, the 3rd switching tube S
3Conducting always, the 3rd diode D
3-straight shutoff, the first switching tube S
1, second switch pipe S
2Alternate conduction, this moment, converter was equivalent to the active clamping forward exciting converter, and the equivalent electric circuit of this pattern downconverter is shown in figure 10.
Claims (2)
1. a buck secondary side adjusting three-port direct current converter comprises input DC source (V
In), storage battery (V
b), former limit circuit (10), secondary circuit (20) and load (R
o), former limit circuit (10) comprises the first electric capacity (C
1), the first switching tube (S
1), second switch pipe (S
2) and the former limit of transformer winding (N
P), secondary circuit (20) comprises the transformer first secondary winding (N
S1), the transformer second secondary winding (N
S2), the 3rd switching tube (S
3), the first diode (D
1), the second diode (D
2), the 3rd diode (D
3), filter inductance (L
o) and filter capacitor (C
o); Former limit circuit (10) respectively with input DC source (V
In) and storage battery (V
b) be connected secondary circuit (20) and load (R
o) be connected, it is characterized in that:
Input DC source (V
In) positive pole respectively with the first electric capacity (C
1) an end and the first switching tube (S
1) drain electrode link to each other input DC source (V
In) negative pole respectively with the first electric capacity (C
1) the other end, second switch pipe (S
2) source electrode and storage battery (V
b) negative pole link to each other the first switching tube (S
1) source electrode respectively with second switch pipe (S
2) drain electrode and the former limit of transformer winding (N
P) end of the same name link to each other the former limit of transformer winding (N
P) non-same polarity and storage battery (V
b) positive pole link to each other;
The transformer first secondary winding (N
S1) the end of the same name and the first diode (D
1) anode connect the transformer first secondary winding (N
S1) non-same polarity respectively with the transformer second secondary winding (N
S2) end of the same name, the 3rd diode (D
3) anode, filter capacitor (C
o) an end and load (R
o) an end connect the transformer second secondary winding (N
S2) the non-same polarity and the second diode (D
2) anode connect the second diode (D
2) negative electrode and the 3rd switching tube (S
3) drain electrode connect the 3rd switching tube (S
3) source electrode respectively with the negative electrode of the negative electrode of first diode (D1), the 3rd diode (D3), and filter inductance (L
o) an end connect filter inductance (L
o) the other end respectively with filter capacitor (C
o) the other end, load (R
o) the other end connect.
2. a buck secondary side adjusting three-port direct current converter comprises input DC source (V
In), storage battery (V
b), former limit circuit (10), secondary circuit (20) and load (R
o), former limit circuit (10) comprises the first electric capacity (C
1), the first switching tube (S
1), second switch pipe (S
2) and the former limit of transformer winding (N
P), secondary circuit (20) comprises the transformer first secondary winding (N
S1), the transformer second secondary winding (N
S2), the 3rd switching tube (S
3), the first diode (D
1), the second diode (D
2), the 3rd diode (D
3), filter inductance (L
o) and filter capacitor (C
o); Former limit circuit (10) respectively with input DC source (V
In) and storage battery (V
b) be connected secondary circuit (20) and load (R
o) be connected, it is characterized in that:
Input DC source (V
In) positive pole respectively with the first electric capacity (C
1) an end and the first switching tube (S
1) drain electrode link to each other input DC source (V
In) negative pole respectively with the first electric capacity (C
1) the other end, second switch pipe (S
2) source electrode and storage battery (V
b) negative pole link to each other the first switching tube (S
1) source electrode respectively with second switch pipe (S
2) drain electrode and the former limit of transformer winding (N
P) end of the same name link to each other the former limit of transformer winding (N
P) non-same polarity and storage battery (V
b) positive pole link to each other;
The circuit connecting relation of secondary circuit (20) is: the transformer first secondary winding (N
S1) the end of the same name and the first diode (D
1) anode connect the transformer first secondary winding (N
S1) non-same polarity respectively with the transformer second secondary winding (N
S2) end of the same name, the 3rd diode (D
3) anode, filter capacitor (C
o) an end and load (R
o) an end connect the transformer second secondary winding (N
S2) the non-same polarity and the second diode (D
2) anode connect the second diode (D
2) negative electrode respectively with the first diode (D
1) negative electrode and the 3rd switching tube (S
3) drain electrode connect the 3rd switching tube (S
3) source electrode and the 3rd diode (D
3) negative electrode, filter inductance (L
o) an end connect filter inductance (L
o) the other end respectively with filter capacitor (C
o) the other end, load (R
o) the other end connect the former limit of the transformer winding (N in the former limit circuit (10)
P) with secondary circuit (20) in transformer secondary winding be coupled through a magnetic core of transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101858736A CN101834529B (en) | 2010-05-28 | 2010-05-28 | Boost, buck and boost-buck secondary side adjusting three-port direct current converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101858736A CN101834529B (en) | 2010-05-28 | 2010-05-28 | Boost, buck and boost-buck secondary side adjusting three-port direct current converter |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210035171.9A Division CN102545637B (en) | 2010-05-28 | 2010-05-28 | Buck-boost secondary side regulation three-port direct current converter |
| CN201210035174.2A Division CN102570836B (en) | 2010-05-28 | 2010-05-28 | Boosting type secondary winding adjustment three-port direct-current converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101834529A CN101834529A (en) | 2010-09-15 |
| CN101834529B true CN101834529B (en) | 2012-07-18 |
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ID=42718495
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101858736A Expired - Fee Related CN101834529B (en) | 2010-05-28 | 2010-05-28 | Boost, buck and boost-buck secondary side adjusting three-port direct current converter |
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| Country | Link |
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| CN (1) | CN101834529B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102651554B (en) * | 2011-02-24 | 2014-04-16 | 同济大学 | Control method and device for accessing energy-storage photovoltaic system into urban rail traction network |
| CN102223075B (en) * | 2011-06-16 | 2013-07-24 | 清华大学 | Four-port direct-current converter |
| CN102710148A (en) * | 2012-07-06 | 2012-10-03 | 聚辰半导体(上海)有限公司 | Alternating current-direct current (AC-DC) switching power supply converter |
| CN104660036A (en) * | 2013-11-22 | 2015-05-27 | 贵州航天林泉电机有限公司 | Method and converter for outputting direct current by bidirectional electricity mutual complementation |
| CN105207477B (en) * | 2015-09-02 | 2017-12-15 | 南京航空航天大学 | The non-isolated DC converter in two-way three port and its control method |
| CN107946047B (en) * | 2016-10-12 | 2020-04-14 | 赤多尼科两合股份有限公司 | Sandwich winding inductor |
| CN107947595B (en) * | 2017-12-25 | 2020-10-27 | 国网辽宁省电力有限公司沈阳供电公司 | Double-voltage reduction and boost type AC-AC converter module |
| CN112821533B (en) * | 2021-01-11 | 2023-06-09 | 深圳威迈斯新能源股份有限公司 | Electric automobile power conversion system for multiplexing PTC into DCDC |
| CN114123767B (en) * | 2021-11-22 | 2023-11-03 | 西安芯派电子科技有限公司 | Boost-buck switch capacitor circuit unit for realizing multiple voltage conversion |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108840A (en) * | 1985-01-28 | 1986-07-23 | 西门子公司 | The current monitoring of switch mode regulator |
| CN101197540A (en) * | 2007-12-11 | 2008-06-11 | 艾默生网络能源有限公司 | Dc converter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8232669B2 (en) * | 2006-09-29 | 2012-07-31 | Ford Global Technologies, Llc | Energy conversion system for a vehicle |
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2010
- 2010-05-28 CN CN2010101858736A patent/CN101834529B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108840A (en) * | 1985-01-28 | 1986-07-23 | 西门子公司 | The current monitoring of switch mode regulator |
| CN101197540A (en) * | 2007-12-11 | 2008-06-11 | 艾默生网络能源有限公司 | Dc converter |
Non-Patent Citations (2)
| Title |
|---|
| Geduly bin.A New Secondary Side Post Regulator (SSPR) PWM Controller for Multiple Output Power Supplies.《Applied Power Electronics Conference and Exposition 1995》.1995, * |
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| Publication number | Publication date |
|---|---|
| CN101834529A (en) | 2010-09-15 |
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