CN106992702A - The method of the multivoltage inverter of electric device and operation with neutral connection - Google Patents
The method of the multivoltage inverter of electric device and operation with neutral connection Download PDFInfo
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- CN106992702A CN106992702A CN201710136988.8A CN201710136988A CN106992702A CN 106992702 A CN106992702 A CN 106992702A CN 201710136988 A CN201710136988 A CN 201710136988A CN 106992702 A CN106992702 A CN 106992702A
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- Prior art keywords
- switch
- npc
- mli
- voltage source
- terminal
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Classifications
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- 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
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/487—Neutral point clamped inverters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Inverter Devices (AREA)
Abstract
The present invention proposes a kind of electric device for being used to transmit to the energy of the second direct voltage source (B2) from the first direct voltage source (B1) and a kind of method for being used to run the multivoltage inverter with neutral connection (0), and the multivoltage inverter is arranged for operation polyphase machine (1).By pulsedly controlling first switch (T1, T8, T12), the first switch is connected on the first electric terminal (2) of the NPC MLI or is connected on the second electric terminal (3) of the NPC MLI with its first terminal, and by pulsedly controlling second switch (T1, T7, T11), the second switch is connected to first switch (T1 with its first terminal, T8, T12 on the second electric terminal), the inductance of polyphase machine (1) can be used to be forced through electric current from the first direct voltage source enters the second direct voltage source.
Description
Technical field
The present invention relates to a kind of electric device and a kind of it is used to run the multivoltage inverter with neutral connection
Method.Present invention relates especially to application of the existing hardware in new operation method, the new operation method is used for electrochemistry accumulation of energy
Device flexibly using for example in propulsion plant.
Background technology
Hybrid battery system may seem different, and be built with different power electronics topological structures.First,
System with multi-electrical level inverter is for hybrid power using extremely important.For multi-electrical level inverter, there is also not
Same topological structure, wherein, in the framework of the present invention, it should especially observe a kind of many level with neutral connection inverse
Become device (neutral point clamper (NPC)-multi-electrical level inverter).NPC- multi-electrical level inverters are of substantially known in the prior art, and
Generally constructed as shown in the Fig. 1 that will be thoroughly discussed later.Here, setting two energy sources to be used for propulsion plant
Or the operation of corresponding propulsion plant.The task of the present invention is so that energy is transferred to other respectively from an energy source
In energy source.
The content of the invention
Being determined above for task is used to run the multivoltage inverter with neutral connection according to the present invention by a kind of
(NPC-MLI) method is solved, and the multivoltage inverter is arranged for running a kind of polyphase machine.Methods described is used for electricity
Lotus is exchanged or moved in the second energy source (such as battery unit) from first energy source (such as battery unit).Therefore, described
NPC-MLI the first electric terminal is arranged for electrically connecting with the first terminal of the first direct voltage source (energy source or battery).
The second electric terminal of the NPC-MLI is arranged for the first electric end with the second direct voltage source (the second energy source or battery)
Son electrical connection.The direct voltage source is arranged for the neutral connection of the NPC-MLI being connected in opposite side.According to
The present invention, pulsedly runs first switch now, and the first switch is connected to the of the NPC-MLI with its first terminal
On one electric terminal or it is connected on the second electric terminal of the NPC-MLI.It is applied to second switch, described second accordingly
Switch is connected on the second electric terminal of the first switch with its first terminal.In the framework of the present invention, " pulse control
System " is understood to the first switch and the second switch being switched on and off under quick switching sequence so that described
The inductance of polyphase machine makes every effort to maintain upon opening to cause second direct current by electric current and by the electric current that inductance drives
The charging of potential source.In this way, the inductance of inductance or the motor can be undertaken such as in boost converter by specially
The function of being provided for the electric components of this setting.Therefore, the invention provides a kind of control method, the control method is by NPC-
MLI and polyphase machine are charged by another energy source to an energy source.Reprinting can be comfortably by software without additional
Hardware spending in the case of realize.Reprinting both can be under the inactive state of the vehicle designed according to the present invention (vehicle stopping)
Carry out, or carried out during vehicle operation (namely " invertor operation ").It is to use the motor or the NPC-MLI
Two or three branch roads, can be determined by the corresponding original switch set in NPC-MLI.
Dependent claims show the preferred extension of the present invention.
Preferably, the first switch and the second switch are controlled with same signal.In this way, arteries and veins is simplified
Rush control and the efficiency of operation.Further preferably, there can be rectangular shape for pulse controlled signal.Precipitous edge can
The as well as possible of efficiency for being now switched off the driving current of inductance after switching in fact makes full use of.
According to the second aspect of the invention, it is proposed that a kind of to be used for from the first direct voltage source to the second direct voltage source
The electric device of energy transmission.The direct voltage source can for example include electrochemical storage device unit.The electric device bag
The multivoltage inverter (NPC-MLI) with neutral connection is included, the multivoltage inverter is arranged for running polyphase machine.
The first electric terminal of the NPC-MLI is arranged for electrically connecting with the first terminal of the first direct voltage source.The NPC-MLI
The second electric terminal be arranged for electrically connecting with the first electric terminal of the second direct voltage source.The neutral connection is set
It is connected for the second electric terminal corresponding with the direct voltage source.According to the present invention, use is set in the electric device
In the method for running NPC-MLI for implementing the inventive aspect that a kind of basis was mentioned just now.In this way, feature, spy
Levy combination and advantage is drawn in the corresponding way so that in order to avoid repetition with reference to embodiment above.
Preferably, the electric device can also have a kind of motor (for example drawing machine), the motor with it is described
NPC-MLI corresponding terminal electrical connection.In this way, the electric device is used as electric or hybrid car
Driving-chain part.
Brief description of the drawings
Embodiments of the invention are described in detail with reference to the accompanying drawings.In the accompanying drawings：
Fig. 1 for two batteries as direct voltage source and the NPC-MLI with three phase electric machine one embodiment
Circuit diagram；
Fig. 2 is the diagram of the first running status of the NPC-MLI shown in Fig. 1；
Fig. 3 is the diagram of the second running status of the NPC-MLI shown in Fig. 1；And
Fig. 4 is a chart, illustrates that a kind of electric charge that is used for according to the present invention is reprinted to the second battery from the first battery
In control method on off state.
Embodiment
Fig. 1 shows a kind of NPC-MLI, and it has battery B1 as with internal resistance R on the first terminal 2i1Direct current
Potential source, and there is the second battery B2 as with internal resistance R on the second electric terminal 3i2Direct voltage source.The NPC-MLI
Coupled in outlet side with three phase electric machine 1, the motor have three inductance L1, L2, L3 and connect respectively with these inductance, use
In Ohmic resistance R1, R2, R3 for representing ohmic loss.The tie point I being connected with the first terminal 2 has first switch
T1, second switch T2, the 3rd switch T3 and the 4th switch T4.All switches are designed to bipolar transistor in shown circuit.
Between the Second terminal of the first switch T1 and the first terminal of the second switch T2, the first diode D1 is connected with,
The diode is connected on the neutral connection 0 in opposite side.The through-flow direction of the diode D1 is opened along described first
Close T1 direction orientation.Between second electric terminal 3 and the second switch T2, it is provided with the 3rd switch T3 and the 4th and opens
T4 is closed, wherein the second diode D2 is connected to the Second terminal and the described 4th switch T4 the first terminal of the 3rd switch T3
Between, and electrically connected in opposite side with the neutral connection 0.The through-flow direction of the second diode D2 is along the neutrality
The direction orientation of tie point 0.Connect between the Second terminal of the second switch T2 and the first terminal of the 3rd switch T3
It is connected to a phase of the motor 1.Two remaining in parallel with tie point I for the electric terminal 2,3 of the NPC-MLI
Branch road II, III construction correspond respectively to above-mentioned branch road I construction so that in order to avoid repeat and with reference to above-mentioned embodiment party
Case.
Fig. 2 shows a kind of running status of the NPC-MLI proposed in Fig. 1, under the running status, and described first opens
Close the T1 and second switch T2 pulsedly to control, this is represented by the T in described switch T1, T2 base stage.For two
It is identical to control used signal T for individual switch T1, T2.Because the 3rd switch T3 and the 4th switch T4 are cut
Disconnected (on off state 0), so mutually being run by the first of the motor 1 by electric current, should can pass through the second phase by electric current
Closed with third phase towards 0. 0 direction, because the 5th switch T5, the 6th switch T6, the 8th switch T8, the 9th switch 9, the
Ten switch T10 and the 12nd switch T12 are disconnected (on off state 0) and the 7th switch T7 and the 11st switch T11 are closed
Close (on off state 1).Once control signal T (running first switch T1 and second switch T2 by it) the disconnections switch T1,
T2, the electric current that described inductance L1, L2, L3 are driven before just driving by the battery B1 enters in the second battery B2, and this
Thus two batteries are electrically charged.The electric current for flowing through the second battery B2 passes through the 3rd switch T3 and the 4th switch T4 intrinsic two pole
Pipe closes until in the first phase to the motor 1.
Fig. 3 shows the second running status, and first battery is given using the second battery B2 under the running status
B1 charges.Therefore, the second switch T2 be closed (on off state 1) and it is described 7th switch T7, it is described 8th switch T8,
The 11st switch T11 and the 12nd switch T12 pulsedly control (switching signal T).If the switch T7,
T8, T11 and T12 are closed, then electric current is by described inductance L2, L3, by described switch T7, T8, T11, T12, by described
NPC-MLI the second electric terminal, is back in the second battery B2.In the case where switch T7, T8, T11, T12 are disconnected,
The intrinsic diode that described inductance L1, L2, L3 drive a current through described switch T5, T6, T9, T10 enters the NPC-MLI
The first electric terminal 2 in, the electric current give the first battery B1 charging.
Fig. 4 shows a chart, illustrates energy by NPC-MLI and polyphase machine in the first battery and the second battery
Between six kinds of different on off states reprinting.In the chart, I, II and III illustrate operation respective branch I, II and III
Polarization state or the sense of current, and T1 to T12 illustrates the on off state of the switch.Polarization state of the same name+,-table
Show the identical sense of current.Capital T represents the Pulse Width Control of respective switch." 0 " represents the switch disconnected." 1 " represents to close
The switch (conducting) of conjunction.Two or three branch roads I, II, III should be used to implement the reprinting according to the present invention, can be passed through
The switch (such as the operating point Nr.2 in shown chart) of the switch T7 and/or T11 is selected.Operating point Nr.1
The 3rd branch road III is only only used, because the switch T7 is disconnected.The operating point Nr.2 had both used the second branch road II,
The 3rd branch road III has been used again, because the not only switch T7 but also switch T11 is closed.In addition, the work
Make point Nr.1 and both used first switch T1 and second switch T2, the 5th switch T5 and the 6th switch T6 have been used again, for arteries and veins
Punching control, and the operating point Nr.2 only pulsedly switchs first switch T1 and second switch T2 and uses remaining branch road
To be used within the burst length of disconnection electric current guiding.It is symmetrical based on the NPC-MLI and exemplary three phases used
Property, the six kinds of running status Nr.1 to Nr.6 illustrated have been drawn, for professional, it is not necessary to it is corresponding its
His running status Nr.3 to Nr.6 discusses to understand the present invention.Therefore in order to avoid repetition abandons separated discussion.
In the case of the hardware that need not be added, the present invention proposes a kind of control for being simply to run NPC-MLI
Method processed, by the control method, it is corresponding that the first direct voltage source can be substantially independent of its by the second direct voltage source
Voltage condition is charged in the mode similar to the relevance used in boost converter.
Claims (10)
1. the method for running the multivoltage inverter with neutral connection (0), being also referred to as " NPC-MLI " below, described
Multivoltage inverter is arranged for operation polyphase machine (1), wherein,
- the NPC-MLI the first electric terminal (2) is arranged for being electrically connected with the first terminal of the first direct voltage source (B 1)
Connect；And
- the NPC-MLI the second electric terminal (3) is arranged for being electrically connected with the first electric terminal of the second direct voltage source (B2)
Connect, wherein,
- the neutral connection (0) is arranged for the corresponding second electric terminal phase with the direct voltage source (B 1, B2)
Connection, and the described method comprises the following steps：
- pulsedly control：
- first switch (T1, T8, T12), the first switch is connected to the first electric end of the NPC-MLI with its first terminal
On sub (2) or it is connected on the second electric terminal (3) of the NPC-MLI；And
- second switch (T2, T7, T11), the second switch with its first terminal be connected to the first switch (T1, T8,
T12 on the second electric terminal).
2. according to the method described in claim 1, wherein, the first switch (T1, T8, T12) and the second switch (T2,
T7, T11) Pulse Width Control realized with same signal.
3. method according to claim 2, wherein, the signal is a kind of square-wave signal.
4. the method according to any one of the claims, wherein, the first switch (T1, T8, T12) with it is described
Between second switch (T2, T7, T11), the diode (D1, D4, D6) being connected on the neutral connection (0) is connected with.
5. the method according to any one of the claims, wherein, it is described many that the NPC-MLI is arranged for operation
Phase motor (1), its mode is：The NPC-MLI includes：
- have first switch (T1), second switch (T2), the 3rd switch (T3), the 4th switch (T4), the first diode (D1) and
The tie point (I) of second diode (D2)；
- have the 5th switch (T5), the 6th switch (T6), the 7th switch (T7), the 8th switch (T8), the 3rd diode (D3) and
The second branch road (II) of 4th diode (D4)；
- there is the 9th switch (T9), the tenth switch (T10), the 11st switch (T11), the 12nd switch (T12), the five or two pole
Manage the 3rd branch road (III) of (D5) and the 6th diode (D6)；
Wherein,
- three branch roads (I, II, III) are in parallel on the first electric terminal (2) and the second electric terminal (3) of the NPC-MLI；
The respective switch (T1-T12) of-branch road (I, II, III) is one another in series；And
The respective diode (D1-D6) of-branch road (I, II, III) is electrically connected in side with the neutral connection (0), and
And electrically connected respectively with two of same branch road (I, II, the III) common connecting points for switching (T1-T12) in opposite side, wherein this
Outside,
The terminal of the corresponding phase of-motor (1) is centrally disposed in four switch (T1- of same branch road (I, II, III)
T12 between).
6. method according to claim 5, wherein, methods described includes setting up at least one chart by being outlined below
Corresponding line defined in running status, wherein,
- " T1 to T12 " represents the first to the 12nd switch (T1-T12)；
- " I " means the tie point (I) polarization state (+, -)；
- " II " means the polarization state (+, -) of second branch road (II)；
- " III " means the polarization state (+, -) of the 3rd branch road (III)；
- " 0 " means the switch (T1-T12) disconnected；
- " 1 " means the switch (T1-T12) of closure；And
- " T " means to switch the Pulse Width Control of (T1-T12)；
7. the method according to any one of the claims, wherein,
- first direct voltage source (B1) includes battery；And/or
- second direct voltage source (B2) includes battery.
8. for the electric device transmitted from the first direct voltage source (B1) to the energy of the second direct voltage source (B2), including：
- multivoltage the inverter with neutral connection (0), below also referred to as " NPC-MLI ", the multivoltage inverter is set
Put for running polyphase machine (1)；Wherein,
- the NPC-MLI the first electric terminal (2) is arranged for being electrically connected with the first terminal of the first direct voltage source (B1)
Connect；And
- the NPC-MLI the second electric terminal (3) is arranged for being electrically connected with the first electric terminal of the second direct voltage source (B2)
Connect；Wherein
- the neutral connection (0) is arranged for corresponding second electric terminal with the direct voltage source (B1, B2) and is connected
Connect；Wherein
- the electric device is arranged for implementing the method according to any one of the claims.
9. electric device according to claim 8, wherein
- first direct voltage source (B1) includes battery；And/or,
- second direct voltage source (B2) includes battery.
10. electric device according to claim 8 or claim 9, including motor (1), the motor with the NPC-MLI's
Corresponding terminal connection.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016200675.4A DE102016200675A1 (en) | 2016-01-20 | 2016-01-20 | Electrical arrangement for energy transfer and method of operating a multi-voltage inverter with a neutral terminal |
| DE102016200675.4 | 2016-01-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106992702A true CN106992702A (en) | 2017-07-28 |
Family
ID=59256342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710136988.8A Pending CN106992702A (en) | 2016-01-20 | 2017-01-19 | The method of the multivoltage inverter of electric device and operation with neutral connection |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106992702A (en) |
| DE (1) | DE102016200675A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113824169A (en) * | 2020-06-19 | 2021-12-21 | 马自达汽车株式会社 | Vehicle drive system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2514627A1 (en) * | 2011-04-20 | 2012-10-24 | Siemens Aktiengesellschaft | Converter for charging batteries in an electric vehicle and for feeding back to supply network |
| CN103620941A (en) * | 2011-07-05 | 2014-03-05 | 富士电机株式会社 | Multilevel conversion circuit |
| CN103701355A (en) * | 2013-12-18 | 2014-04-02 | 南京航空航天大学 | Control system of NPC (Neutral Point Clamped) tri-level half-bridge inverter and voltage sharing control method |
| CN104737433A (en) * | 2012-10-23 | 2015-06-24 | 三菱电机株式会社 | Power conversion device |
| CN105048846A (en) * | 2015-07-01 | 2015-11-11 | 西安理工大学 | Voltage-type three-level NPC (Neutral Point Clamped) converter direct power control method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014220834A1 (en) * | 2014-10-15 | 2016-04-21 | Robert Bosch Gmbh | Electric drive system and method for operating an electric machine |
| DE102014224371A1 (en) * | 2014-11-28 | 2016-06-02 | Robert Bosch Gmbh | Battery system with a hybrid battery and an NPC inverter connected to the battery on the input side and method for operating an NPC inverter connected on the input side with a hybrid battery |
-
2016
- 2016-01-20 DE DE102016200675.4A patent/DE102016200675A1/en not_active Withdrawn
-
2017
- 2017-01-19 CN CN201710136988.8A patent/CN106992702A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2514627A1 (en) * | 2011-04-20 | 2012-10-24 | Siemens Aktiengesellschaft | Converter for charging batteries in an electric vehicle and for feeding back to supply network |
| CN103620941A (en) * | 2011-07-05 | 2014-03-05 | 富士电机株式会社 | Multilevel conversion circuit |
| CN104737433A (en) * | 2012-10-23 | 2015-06-24 | 三菱电机株式会社 | Power conversion device |
| CN103701355A (en) * | 2013-12-18 | 2014-04-02 | 南京航空航天大学 | Control system of NPC (Neutral Point Clamped) tri-level half-bridge inverter and voltage sharing control method |
| CN105048846A (en) * | 2015-07-01 | 2015-11-11 | 西安理工大学 | Voltage-type three-level NPC (Neutral Point Clamped) converter direct power control method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113824169A (en) * | 2020-06-19 | 2021-12-21 | 马自达汽车株式会社 | Vehicle drive system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016200675A1 (en) | 2017-07-20 |
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Application publication date: 20170728 |