CN209079670U - Two-stage bidirectional power inverter with charging and V2G function - Google Patents
Two-stage bidirectional power inverter with charging and V2G function Download PDFInfo
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- CN209079670U CN209079670U CN201821942673.9U CN201821942673U CN209079670U CN 209079670 U CN209079670 U CN 209079670U CN 201821942673 U CN201821942673 U CN 201821942673U CN 209079670 U CN209079670 U CN 209079670U
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 26
- 239000003990 capacitor Substances 0.000 claims abstract description 27
- 230000005611 electricity Effects 0.000 claims description 7
- 238000011084 recovery Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000295 complement effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 3
- 238000013519 translation Methods 0.000 description 2
- 101100019425 Schizosaccharomyces pombe (strain 972 / ATCC 24843) ivn1 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000012536 storage buffer Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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Abstract
The utility model discloses it is a kind of with charging and V2G function two-stage bidirectional power inverter, it is characterized by: prime is the two-way AC/DC circuit of voltage-source type three-phase tri-level, rear class is the two-way DC/DC circuit of three level, the DC side filter capacitor of the two-way AC/DC circuit of the three-phase tri-level is in series by the 4th capacitor C4, the 5th capacitor C5, and two output ends of the two-way DC/DC circuit of three level are connected to battery two-stage.The utility model realizes energy two-way exchange between accumulator of electric car and power grid, improves the utilization efficiency of energy；Prime AC/DC circuit and rear class DC/DC circuit all use tri-level circuit, can reduce the voltage stress of electronic power switch device while improving output power, improve the harmonic wave of output waveform.The voltage stress that electronic power switch device can be reduced while improving output power, improves the harmonic wave of output waveform.
Description
Technical field
The utility model belongs to electric car power control techniques field, and in particular to one kind has the function of charging and V2G
Two-stage bidirectional power inverter.
Background technique
V2G is the abbreviation of Vehicle-to-grid, it describes such a system: when hybrid electric vehicle or pure
Electric vehicle is not when operation, and the energy of automobile power cell group is defeated by power grid by the converter by being connected to power grid, instead
Come over, when the battery of electric vehicle needs to be full of, electric energy can supply battery from power grid.V2G can be applied to it is any can net
The vehicle of network, because most automotive average has 95% time to be all at anchor, their battery can be by electric energy streams
To power grid.
Electric car V2G converter for realizing electric car V2G function, when network load is lower, electric car
The electric power of surplus is absorbed for charging from power grid；When network load is higher, electric car can be used as energy storage source to power grid feedback
Electric power allows electric car to participate in the peak load shifting of power grid with this, and power battery can be used as power grid in future and distribution
The energy storage buffer link of power generation, and user also can use the electricity price difference profit of different periods.
V2G converter is typically used for Vehicular charger or electric automobile charging pile, can use different main circuits
Topology.The above-mentioned prior art has the following disadvantages；
The research of V2G converter mainly meets the needs of to battery charging and discharging at present, that is, realizes the two-way biography of active power
It passs, only a few studies are able to achieve reactive compensation, guarantee that converter operates under High Power Factor state.But existing V2G dress
The control that can not achieve reactive power is set, can not achieve the four quadrant running and regulation power factor of inverter power.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of two with charging and V2G function
Grade bidirectional power converter, can be improved the utilization efficiency of battery in electric car, realize Bidirectional charging-discharging and idle transmission function
Energy.
The utility model is achieved through the following technical solutions:
A kind of two-stage bidirectional power inverter with charging and V2G function, prime are that voltage-source type three-phase tri-level is double
To AC/DC circuit, rear class is the two-way DC/DC circuit of three level, the DC side of the two-way AC/DC circuit of the three-phase tri-level
Filter capacitor is in series by the 4th capacitor C4, the 5th capacitor C5, and two output ends of the two-way DC/DC circuit of three level connect
It is connected to battery two-stage comprising be sequentially connected in series the 13rd electronic power switch device S13 and the 4th inductance in positive electrode bus
L4 is sequentially connected in series the 14th electronic power switch device S14 and the 5th inductance L5 on negative electrode bus, is correspondingly connected with after series connection
The 15th electronic power switch of 13rd electronic power switch device S13 and the 14th electronic power switch device S14 cathode
Device S15 and the 16th electronic power switch device S16, and it is attempted by the 6th capacitor C6 between two output ends；Its
In, the 4th electricity is connected between the 15th electronic power switch device S15 and the 16th electronic power switch device S16
Hold between C4, the 5th capacitor C5 and is grounded.
In the above-mentioned technical solutions, the two-way AC/DC circuit of the three-phase tri-level is three level translation of striding capacitance type
Device.
In the above-mentioned technical solutions, the striding capacitance type three-level converter includes three-phase bridge arm, each bridge arm
Shang Qiao and lower bridge are gone here and there respectively to be set there are two electronic power switch device, two electronic power switch device of the Shang Qiao of same bridge arm and lower bridge
Respectively and capacitor is connected between part.
In the above-mentioned technical solutions, through inductance connection to three phase network among the every phase bridge arm of the two-way AC/DC circuit of three level.
In the above-mentioned technical solutions, the equal inverse parallel fast recovery diode of electronic power switch device.
In the above-mentioned technical solutions, electronic power switch device is MOSFET or IGBT.
In the above-mentioned technical solutions, the two-way AC/DC circuit of the three-phase tri-level is three level translation of neutral-point-clamped type
Device.
In the above-mentioned technical solutions, the capacitance of the 4th capacitor C4 and the 5th capacitor C5 is equal, and the battery is vehicle-mounted
Battery.
In the above-mentioned technical solutions, the control terminal and the 16th power electronics of the 14th electronic power switch device S14
The inverted device of the control terminal of switching device S16 is followed by the first pwm signal,
The control terminal and the 15th electronic power switch device S15 of the 13rd electronic power switch device S13
The inverted device of control terminal be followed by the second pwm signal.
The control method of the two-stage bidirectional power inverter that there is charging and V2G function,
The three level DC/DC converter of V2G bidirectional power converter rear class uses Interleaved control and complementary drive: its
In, 180 ° of the driving signal difference of the 13rd electronic power switch device S13 and the 15th electronic power switch device S15, the
The driving signal of 14 electronic power switch device S14 and the 16th electronic power switch device S16 differ 180 °, and the tenth
Three electronic power switch device S13 and the 14th electronic power switch device S14, the 15th electronic power switch device S15 and
16th electronic power switch device S16 complementary conducting respectively.
It the advantages of the utility model and has the beneficial effect that
The utility model realizes energy two-way exchange between accumulator of electric car and power grid, improves the utilization of energy
Efficiency；Prime AC/DC circuit and rear class DC/DC circuit all use tri-level circuit, can reduce while improving output power
The voltage stress of electronic power switch device improves the harmonic wave of output waveform.Electric power can be reduced while improving output power
The voltage stress of electronic switching device improves the harmonic wave of output waveform.And reversible transducer can and nothing active with simultaneous transmission
Function power carries out reactive compensation and PFC while giving battery charging and discharging.
Detailed description of the invention
Fig. 1 is two-stage type V2G bidirectional power converter topology diagram provided by the utility model.
Fig. 2 is V2G bidirectional power converter general structure schematic diagram provided by the utility model.
Fig. 3 is V2G bidirectional power converter rear class DC/DC circuit PWM signal connection schematic diagram provided by the utility model.
It for those of ordinary skill in the art, without creative efforts, can be according to above attached
Figure obtains other relevant drawings.
Specific embodiment
In order to make those skilled in the art better understand the scheme of the utility model, combined with specific embodiments below into one
Step illustrates the technical solution of the utility model.
A kind of two-stage bidirectional power inverter with charging and V2G function of the utility model, prime is voltage-source type
The two-way AC/DC circuit 2 of three-phase tri-level, rear class are the two-way DC/DC circuit 3 of three level, the two-way AC/DC of the three-phase tri-level
The DC side filter capacitor of circuit is in series by two capacitances equal the 4th capacitor C4, the 5th capacitor C5, three electricity
Two output ends for putting down two-way DC/DC circuit are connected to battery 4, i.e. on-vehicle battery group two-stage comprising are sequentially connected in series positive female
The 13rd electronic power switch device S13 and the 4th inductance L4 on line, are sequentially connected in series the 14th electric power on negative electrode bus
Electronic switching device S14 and the 5th inductance L5 is correspondingly connected with the electricity of the 13rd electronic power switch device S13 and the 14th after series connection
The 15th electronic power switch device S15 and the 16th electronic power switch device S16 of power electronic switching device S14 cathode,
And it is attempted by the 6th capacitor C6 between two output ends；Wherein, the 15th electronic power switch device S15 and
It is connected between the 4th capacitor C4, the 5th capacitor C5 and is grounded between 16 electronic power switch device S16, wherein ground connection purpose
It is to reduce the common-mode voltage that device is born in circuit.That is, the 15th electronic power switch device S15 and the 16th power electronics are opened
Close after device S16 series connection be located at the access point of positive electrode bus the 13rd electronic power switch device S13 and the 4th inductance L4 it
Between, the access point with negative electrode bus is between the 14th electronic power switch device S14 and the 5th inductance L5, that is to say, that position
In the abutting end of the abutting end or inductance and electronic power switch device of corresponding electronic power switch device and inductance.
Alternating voltage, alternating current and the rear class DC/DC electricity of two-stage type V2G bidirectional power converter prime AC/DC circuit
DC voltage, the DC current on road are connect by detection circuit with numerical control system.The power electronics of the front stage circuits is opened
The gate pole control signal of the electronic power switch of the control signal and late-class circuit of pass is issued in due course by numerical control system.
Wherein, electronic power switch device is MOSFET or IGBT, and to be both needed to inverse parallel quick for electronic power switch device
Recovery diode.
The utility model realizes energy two-way exchange between accumulator of electric car and power grid, improves the utilization of energy
Efficiency；Prime AC/DC circuit and rear class DC/DC circuit all use tri-level circuit, can reduce while improving output power
The voltage stress of electronic power switch device improves the harmonic wave of output waveform.
Specifically, the two-way AC/DC circuit of the three-phase tri-level is that striding capacitance type three-level converter or midpoint are clamped
Bit-type (NPC) three-level converter.Specifically, the striding capacitance type three-level converter includes three-phase bridge arm, Mei Geqiao
Arm is by 4 electronic power switch devices, and such as IGBT connects, that is, the Shang Qiao of each bridge arm and lower bridge go here and there respectively set there are two electric power
Electronic switching device respectively and is connected to capacitor, every phase bridge arm between two electronic power switch device of the Shang Qiao of same bridge arm and lower bridge
Centre is through inductance connection to three phase network 1.
This topological structure prime AC/DC reversible convertor is will to exchange side three-phase alternating current to become direct current, and realize function
Rate correction adjusts busbar voltage, and rear class DC/DC reversible transducer is that busbar voltage is carried out buck to carry out high current to battery
Charge and discharge.This structure is more complicated than single-phase topological structure and volume is larger, but power is big, can be using the short time as energy-storage battery
It carries out charging and enhances the cruising ability of electric car；Stage type topology makes front stage control independent mutually, and AC/DC grades in addition
Active and reactive current control strategy can be controlled respectively by taking, thus converter can and reactive power active with simultaneous transmission,
Reactive compensation and PFC are carried out while to battery charging and discharging.Front and back stages are all made of tri-level circuit, realize energy
The two-way flow of amount；The voltage stress of electronic power switch device can be reduced while improving output power, improve output wave
The harmonic wave of shape.
The control method of the two-stage bidirectional power inverter that there is charging and V2G function, including hereinafter, work exists
When charge mode, this DC/DC circuit is run as reduction voltage circuit；In work when discharge mode, this DC/DC circuit is as boosting electricity
Road transport row.It is different according to the direction of its energy transmission when rear class DC/DC reversible transducer works, Buck working method can be divided into
With Boost working method.Meanwhile Yao Shixian twocouese is powered, and is needed the voltage and current to converter both-end to control, is made
It can realize pressure stabilizing or current limliting work in both direction.
The control terminal of 14th electronic power switch device S14 and the control of the 16th electronic power switch device S16
Inverted device IVN2 is held to be followed by the first pwm signal of numerical control system,
The control terminal and the 15th electronic power switch device S15 of the 13rd electronic power switch device S13
The inverted device IVN1 of control terminal be followed by the second pwm signal of numerical control system.
The three level DC/DC converter of V2G bidirectional power converter rear class uses Interleaved control and complementary drive: its
In, 180 ° of the driving signal difference of the 13rd electronic power switch device S13 and the 15th electronic power switch device S15, the
The driving signal of 14 electronic power switch device S14 and the 16th electronic power switch device S16 differ 180 °, and the tenth
Three electronic power switch device S13 and the 14th electronic power switch device S14, the 15th electronic power switch device S15 and
16th electronic power switch device S16 complementary conducting respectively.
The spatially relative terms such as "upper", "lower", "left", "right" have been used in embodiment for ease of explanation, have been used for
Relationship of the elements or features relative to another elements or features shown in explanatory diagram.It should be understood that in addition to figure
Shown in except orientation, spatial terminology is intended to include the different direction of device in use or operation.For example, if in figure
Device be squeezed, the element for being stated as being located at other elements or feature "lower" will be located into other elements or feature "upper".
Therefore, exemplary term "lower" may include both upper and lower orientation.Device, which can be positioned in other ways, (to be rotated by 90 ° or position
In other orientation), it can be interpreted accordingly used herein of the opposite explanation in space.
Moreover, the relational terms of such as " first " and " second " or the like are used merely to one with another with identical
The component of title distinguishes, without necessarily requiring or implying between these components there are any this actual relationship or
Sequentially.
Illustrative description has been done to the utility model above, it should explanation, in the core for not departing from the utility model
In the case where the heart, it is any it is simple deformation, modification or other skilled in the art can not spend creative work etc.
The protection scope of the utility model is each fallen with replacement.
Claims (10)
1. a kind of two-stage bidirectional power inverter with charging and V2G function, it is characterised in that: prime is voltage-source type three-phase
The two-way AC/DC circuit of three level, rear class are the two-way DC/DC circuit of three level, the two-way AC/DC circuit of the three-phase tri-level
DC side filter capacitor is in series by the 4th capacitor C4, the 5th capacitor C5, and the two of the two-way DC/DC circuit of three level are defeated
Outlet is connected to battery two-stage comprising the 13rd electronic power switch device S13 being sequentially connected in series in positive electrode bus and
Four inductance L4 are sequentially connected in series the 14th electronic power switch device S14 and the 5th inductance L5 on negative electrode bus, right after series connection
The 15th electric power electricity of the 13rd electronic power switch device S13 and the 14th electronic power switch device S14 cathode should be connected
Sub switch device S15 and the 16th electronic power switch device S16, and it is attempted by the 6th capacitor between two output ends
C6；Wherein, it is connected between the 15th electronic power switch device S15 and the 16th electronic power switch device S16
Between 4th capacitor C4, the 5th capacitor C5 and it is grounded.
2. a kind of two-stage bidirectional power inverter with charging and V2G function according to claim 1, feature exist
In: the two-way AC/DC circuit of the three-phase tri-level is striding capacitance type three-level converter.
3. a kind of two-stage bidirectional power inverter with charging and V2G function according to claim 2, feature exist
In: the striding capacitance type three-level converter includes three-phase bridge arm, and the Shang Qiao of each bridge arm and lower bridge are gone here and there respectively is equipped with two
A electronic power switch device respectively and is connected to capacitor between two electronic power switch device of the Shang Qiao of same bridge arm and lower bridge.
4. a kind of two-stage bidirectional power inverter with charging and V2G function according to claim 3, feature exist
In: through inductance connection to three phase network among the every phase bridge arm of the two-way AC/DC circuit of three level.
5. a kind of two-stage bidirectional power inverter with charging and V2G function according to claim 4, feature exist
In: the equal inverse parallel fast recovery diode of electronic power switch device.
6. a kind of two-stage bidirectional power inverter with charging and V2G function according to claim 5, feature exist
In: electronic power switch device is MOSFET or IGBT.
7. a kind of two-stage bidirectional power inverter with charging and V2G function according to claim 1, feature exist
In: the two-way AC/DC circuit of the three-phase tri-level is neutral-point-clamped type three-level converter.
8. a kind of two-stage bidirectional power inverter with charging and V2G function according to claim 1, feature exist
In: the capacitance of the 4th capacitor C4 and the 5th capacitor C5 is equal.
9. a kind of two-stage bidirectional power inverter with charging and V2G function according to claim 1, feature exist
In the battery is on-vehicle battery.
10. a kind of two-stage bidirectional power inverter with charging and V2G function according to claim 1, feature exist
In: the control terminal of the 14th electronic power switch device S14 and the control terminal of the 16th electronic power switch device S16 are through anti-
Phase device is followed by the first pwm signal,
The control terminal of the 13rd electronic power switch device S13 and the control of the 15th electronic power switch device S15
The inverted device in end processed is followed by the second pwm signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821942673.9U CN209079670U (en) | 2018-11-23 | 2018-11-23 | Two-stage bidirectional power inverter with charging and V2G function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821942673.9U CN209079670U (en) | 2018-11-23 | 2018-11-23 | Two-stage bidirectional power inverter with charging and V2G function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109367417A (en) * | 2018-11-23 | 2019-02-22 | 天津职业技术师范大学 | Two-stage bidirectional power inverter and control method with charging and V2G function |
| CN112491290A (en) * | 2020-11-06 | 2021-03-12 | 东北电力大学 | Carrier PWM modulation method of three-phase diode clamping type three-level double-output inverter |
| WO2021180632A1 (en) * | 2020-03-11 | 2021-09-16 | Vitesco Technologies GmbH | Galvanically coupling dc-to-dc converter and vehicle electrical system |
-
2018
- 2018-11-23 CN CN201821942673.9U patent/CN209079670U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109367417A (en) * | 2018-11-23 | 2019-02-22 | 天津职业技术师范大学 | Two-stage bidirectional power inverter and control method with charging and V2G function |
| WO2021180632A1 (en) * | 2020-03-11 | 2021-09-16 | Vitesco Technologies GmbH | Galvanically coupling dc-to-dc converter and vehicle electrical system |
| CN112491290A (en) * | 2020-11-06 | 2021-03-12 | 东北电力大学 | Carrier PWM modulation method of three-phase diode clamping type three-level double-output inverter |
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Effective date of registration: 20221228 Address after: 300000 901-9, building 1, Tianjin International Jewelry City, No. 2, Gonghua Road, Huayuan Industrial Zone, Binhai high tech Zone, Binhai New Area, Tianjin Patentee after: Tianjin Spectrum Technology Co.,Ltd. Address before: No. 1310 Dagu South Road, Jinnan District, Tianjin Patentee before: TIANJIN University OF TECHNOLOGY AND EDUCATION |
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Granted publication date: 20190709 |
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