CN205945096U - V2G fills discharge device with reactive compensation function - Google Patents
V2G fills discharge device with reactive compensation function Download PDFInfo
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- CN205945096U CN205945096U CN201620942061.4U CN201620942061U CN205945096U CN 205945096 U CN205945096 U CN 205945096U CN 201620942061 U CN201620942061 U CN 201620942061U CN 205945096 U CN205945096 U CN 205945096U
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- 230000002441 reversible effect Effects 0.000 claims abstract description 33
- 230000002457 bidirectional effect Effects 0.000 claims description 10
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 9
- 230000003750 conditioning effect Effects 0.000 claims description 6
- 230000002452 interceptive effect Effects 0.000 abstract description 3
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 abstract 4
- 238000000034 method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 22
- 238000005516 engineering process Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to an intelligent two -way battery charging outfit field of electric automobile specifically says it is the V2G fills discharge device with reactive compensation function based on electric automobile and the two -way interactive technique of electric wire netting. The utility model discloses V2G fills discharge device with reactive compensation function, including the casing, characterized by is still including reversible PWM converter, protection circuit, two -way DCDC converter, controller, AC distribution circuit, DC distribution circuit and the rectifier circuit of setting in the casing, reversible PWM converter is connected with two -way DCDC converter through the protection circuit, and the drive signal of controller is connected with the input of reversible PWM converter and two -way DCDC converter respectively, and reversible PWM converter is connected with the DC distribution circuit through rectifier circuit through DC distribution circuit connection battery, AC distribution circuit through AC distribution circuit connection electric wire netting, two -way DCDC converter.
Description
Technical field
This utility model is related to Intellectualized electric automobile two-way charger field, and specifically one kind is based on electronic vapour
Car and the V2G charge and discharge device with no-power compensation function of electrical network two-way interaction technology.
Background technology
Global energy crisis are become increasingly conspicuous with problem of environmental pollution, and the development of low-carbon economy has promoted the emerging of electric automobile
Rise, a kind of connecting electric automobile that is intended to is arisen at the historic moment with the technology of electrical network, and V2GVehicle to Grid technology, as V2G skill
Art realizes the key equipment of energy information two-way flow, and the research of Bidirectional charging-discharging device causes extensive concern.But, mesh
Front most of charger only have for electric automobile provide electric energy simple function, even if be capable of electric automobile with
The function of Bidirectional charging-discharging between electrical network, as efficiency is low, harmonic wave is high and lacks the deficiencies such as necessary protection, and can not
Promoted on a large scale, thus limiting the realization of V2G technology.Therefore, it is necessary to research and develop a kind of discharge and recharge of high efficient and reliable
Device is promoting the development of ev industry and friendly interactive with electrical network.
Utility model content
This utility model purpose is to provide a kind of Bidirectional charging-discharging device based on V2G technology solving the above problems,
There is the function of reactive-load compensation harmonic suppression, and provide necessary protection circuit, have structure simple, practical,
Safe efficient, reliable feature.
This utility model be employed technical scheme comprise that：
A kind of V2G charge and discharge device with no-power compensation function, including housing, is characterized in that also including being arranged on housing
Interior Reversible PWM current transformer, protection circuit, two-way DC/DC current transformer, controller, AC distribution circuit, direct current distribution circuit and
Rectification circuit, described Reversible PWM current transformer is connected with two-way DC/DC current transformer by protection circuit, the driving letter of controller
Number it is connected with the input of Reversible PWM current transformer and two-way DC/DC current transformer respectively, Reversible PWM current transformer is through AC distribution
Circuit connects electrical network, and two-way DC/DC current transformer connects battery through direct current distribution circuit, the rectified circuit of AC distribution circuit with straight
Stream power distribution circuit is connected.
Reversible PWM current transformer described in the utility model includes VSC type three-phase PWM current transformer and LCL filter, described VSC
Type three-phase PWM current transformer is by power switch tube S1, power switch tube S2, power switch tube S3, power switch tube S4, power switch
Pipe S5, power switch tube S6, bus capacitor C4Composition, power switch tube S1With power switch tube S4It is connected in series, power switch pipe
S3With power switch tube S6It is connected in series, power switch tube S5With power switch tube S2It is connected in series, power switch tube S1, power opens
Close pipe S3, power switch tube S5Common-anode connects, and draws port 5, power switch tube S4, power switch tube S6, power switch tube S2
Common cathode connects, and draws port 6, bus capacitor C4It is connected between port 5 and port 6, No. 1 port of LCL filter is connected to work(
Rate switching tube S1With power switch tube S4Between series connection brachium pontis, No. 2 ports of LCL filter are connected to power switch tube S3With power
Switching tube S6Between series connection brachium pontis, No. 3 ports of LCL filter are connected to power switch tube S5With power switch tube S2Series connection brachium pontis
Between, No. 4 ends of LCL filter are connected with electrical network；
Described protection circuit is by power switch tube S7With resistance R4It is composed in series, power switch tube S7Anode and resistance R4's
One end connects, power switch tube S7Negative electrode is connected with port 6, resistance R4The other end is connected with port 5；
Described two-way DC/DC current transformer is by power switch tube S8, power switch tube S9, inductance L7, electric capacity C5, resistance R5Group
Become, resistance R5With electric capacity C5Series connection, is connected between port 5 and port 6, power switch tube S8Anode be connected with port 5, power
Switching tube S8Negative electrode be connected with port 7, power switch tube S9Anode be connected with port 7, power switch tube S9Negative electrode and end
Mouth 8 connection, inductance L7One end is connected to port 7, and the other end is connected with one end of set of cells, and the other end of set of cells is with port 8 even
Connect；
Described controller includes MCU control chip, voltage/current signals conditioning unit, driver element, BMS module, Card Reader
Device module, serial ports input through keyboard module, coin identification module, display module, printer；Wherein, described voltage/current signals are adjusted
Reason unit connects the A/D sample port of MCU control chip；Described driver element connects the PWM port of MCU control chip, drives
The unit other end is connected to the power switch tube S of Reversible PWM current transformer1, power switch tube S2, power switch tube S3, power
Switching tube S4, power switch tube S5, power switch tube S6Signal end, the power switch tube S of protection circuit7Signal end and double
Power switch tube S to DC/DC current transformer8, power switch tube S9Signal end；BMS module connects MCU through CAN and controls core
Piece CAN port；Described card reader module, serial ports input through keyboard module, coin identification module, display module, printer connect respectively
Connect the I/O port of MCU control chip；
Described AC distribution circuit includes earth leakage circuit-breaker QF, lightning protection device FVC, current transformer TA, A.C. contactor
KM and alternating-current bidirectional ammeter DT, electrical network is connected with lightning protection device FVC summation current transformer TA through earth leakage circuit-breaker QF, exchange
Two-way ammeter DT is connected with current transformer TA, and current transformer TA is connected with A.C. contactor KM, A.C. contactor KM with can
Inverse PWM converter connects；
Described direct current distribution circuit 7 includes fuse FU, diverter RS, direct current energy meter PZ and D.C. contactor KM,
Battery is connected with D.C. contactor KM through overcurrent fuse FU, and D.C. contactor KM is connected with diverter RS, diverter RS with two-way
DC/DC current transformer connects, and direct current energy meter PZ is connected with diverter RS；
Described rectification circuit is unidirectional AC/DC rectification circuit.
Compared with prior art, its advantage is this utility model：This utility model adopts Reversible PWM current transformer warp
Protection circuit is connected as main circuit with two-way DC/DC current transformer, is controlled by MCU, can preferably realize V2G skill
Art, mainly has the advantage that：
1st, this utility model can realize the two-way interactive of energy information, and electric automobile both can absorb as power load
It is also possible to provide electric energy as distributed energy storage to electrical network, user can go out meeting itself electrical network electric energy according to practical situation
While row demand, by obtaining certain income to electrical network sale of electricity.
2nd, this utility model passes through LCL filter circuit, can effectively reduce harmonic wave, it is to avoid the pollution of electric energy, by right
The control of main circuit, has the function of reactive-load compensation, can improve the power factor of system, increases efficiency for charge-discharge.
3rd, this utility model has protection circuit, and structure is simple, not only can limit the pump liter of busbar voltage, and permissible
Prevent bus capacitor overvoltage or circuit failure protection electric discharge.
Brief description
Fig. 1 is the overall structure block diagram of this utility model Bidirectional charging-discharging device；
Fig. 2 is the main circuit schematic diagram of bidirectional electric automobile charge and discharge device；
Fig. 3 is the circuit theory diagrams of Reversible PWM current transformer；
Fig. 4 is the circuit theory diagrams of protection circuit；
Fig. 5 is the circuit theory diagrams of two-way DC/DC current transformer；
Fig. 6 is the circuit structure block diagram of controller；
Fig. 7 is the circuit structure block diagram of AC distribution；
Fig. 8 is the circuit structure block diagram of DC distribution；
Fig. 9 is the control block diagram of Reversible PWM current transformer；
Figure 10 is the closed loop control block diagram of two-way DC/DC current transformer；
Figure 11 is control block diagram when two-way DC/DC current transformer charges；
Figure 12 is control block diagram during two-way DC/DC current transformer electric discharge.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing, to this
Utility model is described in detail.
Embodiment 1
As shown in figure 1, a kind of V2G charge and discharge device with reactive-load compensation, including housing 1, it is characterized in that also including setting
Put Reversible PWM current transformer 2 in housing 1, protection circuit 3, two-way DC/DC current transformer 4, controller 5, AC distribution circuit 6,
Direct current distribution circuit 7 and rectification circuit 8, described Reversible PWM current transformer 2 passes through protection circuit 3 and two-way DC/DC current transformer 4 phase
Connect, the drive signal of controller 5 is connected with the input of Reversible PWM current transformer 2 and two-way DC/DC current transformer 4 respectively, can
Inverse PWM converter 2 connects electrical network through AC distribution circuit 6, and two-way DC/DC current transformer 4 connects battery through direct current distribution circuit 7,
The rectified circuit 8 of AC distribution circuit 6 is connected with direct current distribution circuit 7.
Circuit theory diagrams based on Fig. 2, Fig. 3 is the circuit theory diagrams of Reversible PWM current transformer, and Reversible PWM current transformer 2 is by LCL
Filter circuit and VSC type three-phase PWM current transformer are constituted, and electrical network is connected with LCL filter port 4, and LCL filter is by three equivalent
Inductance L1、L2、L3With three unsteady flow side equivalent inductances L4、L5、L6Series connection, difference parallel resistance R between two groups of inductance1、R2、R3With
Electric capacity C1、C2、C3Series arm, three groups of series arms become Y-connection, constitute LCL low pass filter；VSC type three-phase PWM
Current transformer is by power switch tube S1, power switch tube S2, power switch tube S3, power switch tube S4, power switch tube S5, power opens
Close pipe S6, bus capacitor C4Composition, power switch tube S1With power switch tube S4It is connected in series, power switch tube S3With power switch
Pipe S6It is connected in series, power switch tube S5With power switch tube S2It is connected in series, power switch tube S1, power switch tube S3, power
Switching tube S5Common-anode connects, and draws port 5, power switch tube S4, power switch tube S6, power switch tube S2Common cathode connects,
Draw port 6, bus capacitor C4It is connected between port 5 and port 6, No. 1 port of LCL filter is connected to power switch tube S1With
Power switch tube S4Between series connection brachium pontis, No. 2 ports of LCL filter are connected to power switch tube S3With power switch tube S6Series connection
Between brachium pontis, No. 3 ports of LCL filter are connected to power switch tube S5With power switch tube S2Between series connection brachium pontis, power switch
Pipe S1, power switch tube S2, power switch tube S3, power switch tube S4, power switch tube S5, power switch tube S6Signal termination
Receive the drive signal sending from controller through overdrive circuit, thus realizing the control of discharge and recharge.
As shown in figure 4, described protection circuit, by power switch tube S7With resistance R4It is composed in series, power switch tube S7Anode
With resistance R4One end connect, power switch tube S7Negative electrode is connected with port 6, resistance R4The other end is connected with port 5, and power is opened
Close pipe S7Signal end receive come driving circuit drive signal, control power switch tube S7Break-make, protection circuit be used for limit
The pump liter of value DC bus-bar voltage, and bus capacitor overvoltage electric discharge or circuit failure protection electric discharge.
As shown in figure 5, battery is connected with two-way DC/DC current transformer through direct current distribution circuit, two-way DC/DC current transformer 4
By power switch tube S8, power switch tube S9, inductance L7, electric capacity C5, resistance R5Composition, resistance R5With electric capacity C5Series connection, is connected to end
Between mouth 5 and port 6, power switch tube S8Anode be connected with port 5, power switch tube S8Negative electrode be connected with port 7, work(
Rate switching tube S9Anode be connected with port 7, power switch tube S9Negative electrode be connected with port 8, inductance L7One end is connected to port 7,
The other end is connected with one end of set of cells, and the other end of set of cells is connected with port 8, resistance R5With electric capacity C5Series arm with
Protection circuit is in parallel, power switch tube S8, power switch tube S9Signal end receive the drive signal that sends of drive circuit, realize
The charge and discharge control of two-way DC/DC current transformer；
As shown in fig. 6, described controller 5 include MCU control chip, voltage/current signals conditioning unit, driver element,
BMS module, card reader module, serial ports input through keyboard module, coin identification module, display module, printer；Wherein, described electricity
Pressure/current signal conditioning unit connects the A/D sample port of MCU control chip；Described driver element connects MCU control chip
PWM port, the driver element other end is connected to the power switch tube S of Reversible PWM current transformer1, power switch tube S2, power
Switching tube S3, power switch tube S4, power switch tube S5, power switch tube S6Signal end, the power switch tube S of protection circuit7
Signal end and two-way DC/DC current transformer power switch tube S8, power switch tube S9Signal end；BMS module is through CAN
Connect MCU control chip CAN port；Described card reader module, serial ports input through keyboard module, coin identification module, display module,
Printer connects the I/O port of MCU control chip respectively；
As shown in fig. 7, described AC distribution circuit 6 include earth leakage circuit-breaker QF, lightning protection device FVC, current transformer TA,
A.C. contactor KM and alternating-current bidirectional ammeter DT, electrical network is through earth leakage circuit-breaker QF and lightning protection device FVC summation current transformer
TA is connected, and alternating-current bidirectional ammeter DT is connected with current transformer TA, and current transformer TA is connected with A.C. contactor KM, and exchange connects
Tentaculum KM is connected with Reversible PWM current transformer；
As shown in figure 8, described direct current distribution circuit 7 includes fuse FU, diverter RS, direct current energy meter PZ and direct current
Catalyst KM, battery is connected with D.C. contactor KM through overcurrent fuse FU, and D.C. contactor KM is connected with diverter RS, diverter
RS is connected with two-way DC/DC current transformer, and direct current energy meter PZ is connected with diverter RS；
Described rectification circuit 8 is unidirectional AC/DC rectification circuit.
Its operation principle is as follows：
The situation first according to system and electric automobile for the controller, determines whether system meets normal working condition, then
The instruction being inputted according to user, determines that system needs to be operated in battery charging state, or the discharge condition of battery.If needed
To charge for battery, controller can send signal according to instruction by drive circuit, controls the Reversible PWM current transformer work of grid side
Make in rectification mode, control battery side two-way DC/DC current transformer to charge for battery by the way of pulsed constant voltage or crossing current；As
Fruit needs battery discharge, and controller can send drive signal and control battery side two-way DC/DC current transformer to adopt constant high current side
Formula electric discharge, control net side Reversible PWM current transformer are operated in inverter mode, convey electric energy to electrical network；If there is bus capacitor C4
Overvoltage or break down, lead to line voltage distribution change, controller can according to sampled signal send drive signal control protection electricity
Road power switch tube S7Break-make, realize protective effect to system.
Fig. 6 is the circuit structure block diagram of controller, and controller core is MCU control chip, comprises additionally in voltage/current letter
Number conditioning unit, driver element, BMS module, card reader module, serial ports input through keyboard module, coin recognition unit module, touch
Screen, printer, control aspect is mainly by means of MCU control chip, voltage/current signals conditioning unit, driver element, BMS mould
Block, carries out sample detecting to the voltage x current of net side and battery side in real time, and BMS module is believed to the battery of accessed electric automobile
Breath is analyzed, and for the voltage and current parameter sampled, passing ratio integral algorithm PI completes two each power of current transformer
The calculating of switching tube pwm pulse, eventually passes drive circuit and sends corresponding drive signal to current transformer, realize device to charge and discharge
The control of electricity.Other module belongs to the supplementary module of man-machine interaction, and user is according to card reader and serial ports input through keyboard user
Instruction, can carry out selecting and display automobile battery information by touch screen, in addition coin identification module and printer can be expired
Other demands of sufficient user.
Fig. 7, shown in 8, be the circuit structure block diagram of AC and DC distribution, can for device provide necessary electic protection and
Monitoring.Fig. 7 is the circuit structure block diagram of AC distribution, and for three phase network, it is permissible that AC distribution includes earth leakage circuit-breaker QF
As the emergency switch of system, lightning protection device FVC then in parallel, as the necessary protection of system, current transformer TA is connected on
On bus, that be attached thereto is alternating-current bidirectional electric energy meter DT, jointly completes the monitoring function to system net side, then can connect friendship
Stream catalyst KM, controller can be controlled the access of current transformer of net side or pick out system by A.C. contactor；Fig. 8 is
The circuit structure block diagram of DC distribution, for battery, DC distribution includes DC fast speed fuse FU, necessary as system
Protection, then accesses D.C. contactor KM, in order to control the access of current transformer of DC side or to pick out system, is then tapped off device
RS is connected on dc bus, and two ends connect direct current energy meter PZ, jointly complete the monitoring function to system battery side.Exchange is joined
Circuit is connected with direct current distribution circuit through rectification circuit, and AC rectification is unidirectional current, uses for DC distribution.
Shown in Fig. 9,10,11, it is the control block diagram under charge mode, operation principle：
Work as user input instruction, when needing to be charged for battery, determine that system meets to charge in BMS and controller and want
On the premise of asking, the Reversible PWM current transformer of main circuit net side is operated under rectification mode, and alternating current is exactly changed by Main Function
Become unidirectional current, then maintain C4The stablizing of voltage, guarantee as far as possible has preferable quality from the electric energy of electrical network output, i.e. harmonic wave
Low, power factor is high, with reference to Fig. 9.Controller, with reference to the control planning of Fig. 6, obtains the voltage electricity of net side from three phase network sampling
Stream parameter, obtains synchronizing signal by phaselocked loop, and three-phase voltage u and electric current i obtains under biphase d-q coordinate through Park conversion
Voltage and current parameter ud、uq、id、iq, idAnd iqRespectively with corresponding reference value i* dAnd i* qIt is compared, wherein i* d、i* qUsing
Determine current vector to control, that is,Wherein k1、k2It is respectively voltage ratio, integral adjustment gain,
UdcFor DC voltage, i.e. C4Voltage.After the computing of current ratio integration PI, obtain corresponding voltage signal, using front
Feedback decoupling control policy, with ud、uqAnd iqAnd idThe component of voltage producing on d, q axle respectively is compared, after being decoupled
U* d、u* q, it is then passed through dq/ α β conversion, that is, two cordic phase rotators are converted to biphase static coordinate 2r/2s, obtain uα、uβ, warp
Cross SVPWM and must carry corresponding SVPWM trigger pulse, to control power switch tube S1, power switch tube S2, power switch tube S3, work(
Rate switching tube S4, power switch tube S5, power switch tube S6Break-make.Complete by handing over by the break-make controlling power switch pipe
Stream electricity controls to galvanic rectification, realizes the function of High Power Factor, low harmony wave simultaneously；The unidirectional current obtaining be connected to double
To before DC/DC current transformer, can be through one by power switch tube S7With resistance R4The protection circuit of series connection, with reference to Fig. 2；For double
It is required to electric current is controlled during charge and discharge to DC/DC current transformer, reference 10, the two-way DC/ under charge mode
DC current transformer, with reference to Fig. 5, in order to meet charging requirement, two-way DC/DC current transformer can be operated in Buck mould to specific topological structure
Formula, i.e. buck chopper pattern.Concrete control block diagram reference Figure 11 under charge condition, using pulsed fast charge mode, with sampling
Electric current compares after the computing of current ratio integration PI, after amplitude limiter, obtains corresponding PWM trigger pulse by PWM,
Needed to set the dutycycle of trigger pulse according to voltage, be accurately controlled power switch tube S8Break-make, carry out the change of electric energy
Change, finally meet the requirement of battery charging.
Shown in Fig. 9,10,12, it is the control block diagram under discharge mode, operation principle：
Work as user input instruction, need to be discharged for battery, when as electrical network conveys electric energy, in BMS and controller
On the premise of determining that battery meets electric discharge requirement, the instruction that controller can be inputted according to user, control main circuit battery side
Two-way DC/DC current transformer, control block diagram, with reference to 11, requires to meet electric discharge, two-way DC/DC current transformer can be operated in Boost
Pattern, i.e. boost chopper pattern, during electric discharge, by the way of constant heavy-current discharge, can improve electrokinetic cell moment to electricity
Net ability, the control principle of electric discharge and similar, the sample rate current i charging of anti-power transmission energybatWith current reference value i* batCompared
Relatively, after the computing of current ratio integration PI, through amplitude limiter, corresponding PWM trigger pulse must be carried by PWM, according to voltage
Need to set the dutycycle of trigger pulse, be accurately controlled power switch tube S9Break-make, obtain suitable voltage；Risen
After the unidirectional current of pressure, through protection circuit, it is connected to the bus capacitor C of Reversible PWM current transformer4, with reference to Fig. 2；In discharge scenario
Under, the Reversible PWM current transformer of net side is operated in inverter mode, by sampling the voltage and current signal arriving, through Park convert,
After dq/ α β conversion, corresponding drive signal is obtained by SVPWM, control power switch tube S1, power switch tube S2, power switch
Pipe S3, power switch tube S4, power switch tube S5, power switch tube S6Break-make, realize the purpose of rectification, alternating current become
Unidirectional current, eventually passes LCL filter, accesses electrical network after reducing harmonic wave.Main circuit works in the discharged condition, according to idle benefit
The principle repaid, during electric discharge, two-way DC/DC current transformer is operated in Boost pattern, and Reversible PWM current transformer is operated in inverter mode, has
Work(power flows to electrical network from battery, and reactive power is zero, i.e. active operation entirely, can carry out reactive-load compensation, then through LCL filtering
Device, the electric energy that the electric energy being exported from battery is absorbed to electrical network, it is possible to achieve low harmony wave, the function of High Power Factor.
In this utility model, the LCL filter that net side is used is passive filter, by inductance L, electric capacity C, resistance R group
Become, realize to system harmonicses, radiation interference, Conduction Interference inhibitory action；Reversible PWM current transformer and two-way DC/DC current transformer
Between protection circuit, by power switch tube S7With resistance R4It is composed in series, there is limit value DC bus-bar voltage pump liter, bus electricity
Hold the function of overvoltage electric discharge.
The model of Main electronic parts in the present embodiment：
Claims (2)
1. a kind of V2G charge and discharge device with no-power compensation function, including housing (1), is characterized in that also including being arranged on shell
Reversible PWM current transformer (2) in body (1), protection circuit (3), two-way DC/DC current transformer (4), controller (5), AC distribution electricity
Road (6), direct current distribution circuit (7) and rectification circuit (8), described Reversible PWM current transformer (2) pass through protection circuit (3) with two-way
DC/DC current transformer (4) is connected, the drive signal of controller (5) respectively with Reversible PWM current transformer (2) and two-way DC/DC unsteady flow
The input of device (4) is connected, and Reversible PWM current transformer (2) connects electrical network, two-way DC/DC current transformer through AC distribution circuit (6)
(4) battery, the rectified circuit of AC distribution circuit (6) (8) and direct current distribution circuit (7) phase are connected through direct current distribution circuit (7)
Connect.
2. a kind of V2G charge and discharge device with no-power compensation function according to claim 1, is characterized in that：Described can
Inverse PWM converter (2) includes VSC type three-phase PWM current transformer and LCL filter (9), and described VSC type three-phase PWM current transformer is by work(
Rate switching tube S1, power switch tube S2, power switch tube S3, power switch tube S4, power switch tube S5, power switch tube S6, female
Line capacitance C4Composition, power switch tube S1With power switch tube S4It is connected in series, power switch tube S3With power switch tube S6Series connection
Connect, power switch tube S5With power switch tube S2It is connected in series, power switch tube S1, power switch tube S3, power switch tube S5
Common-anode connects, and draws port 5, power switch tube S4, power switch tube S6, power switch tube S2Common cathode connects, and draws port
6, bus capacitor C4It is connected between port 5 and port 6, No. 1 port of LCL filter is connected to power switch tube S1With power switch
Pipe S4Between series connection brachium pontis, No. 2 ports of LCL filter are connected to power switch tube S3With power switch tube S6Between series connection brachium pontis,
No. 3 ports of LCL filter are connected to power switch tube S5With power switch tube S2Between series connection brachium pontis, LCL filter 4 end with
Electrical network connects；
Described protection circuit (3) is by power switch tube S7With resistance R4It is composed in series, power switch tube S7Anode and resistance R4One
End connects, power switch tube S7Negative electrode is connected with port 6, resistance R4The other end is connected with port 5；
Described two-way DC/DC current transformer (4) is by power switch tube S8, power switch tube S9, inductance L7, electric capacity C5, resistance R5Composition,
Resistance R5With electric capacity C5Series connection, is connected between port 5 and port 6, power switch tube S8Anode be connected with port 5, power switch
Pipe S8Negative electrode be connected with port 7, power switch tube S9Anode be connected with port 7, power switch tube S9Negative electrode and port 8
Connect, inductance L7One end is connected to port 7, and the other end is connected with one end of set of cells, and the other end of set of cells is connected with port 8；
Described controller (5) includes MCU control chip, voltage/current signals conditioning unit, driver element, BMS module, Card Reader
Device module, serial ports input through keyboard module, coin identification module, display module, printer；Wherein, described voltage/current signals are adjusted
Reason unit connects the A/D sample port of MCU control chip；Described driver element connects the PWM port of MCU control chip, drives
The unit other end is connected to the power switch tube S of Reversible PWM current transformer1, power switch tube S2, power switch tube S3, power
Switching tube S4, power switch tube S5, power switch tube S6Signal end, the power switch tube S of protection circuit7Signal end and double
Power switch tube S to DC/DC current transformer8, power switch tube S9Signal end；BMS module connects MCU through CAN and controls core
Piece CAN port；Described card reader module, serial ports input through keyboard module, coin identification module, display module, printer connect respectively
Connect the I/O port of MCU control chip；
Described AC distribution circuit (6) includes earth leakage circuit-breaker QF, lightning protection device FVC, current transformer TA, A.C. contactor KM
And alternating-current bidirectional ammeter DT, electrical network is connected with lightning protection device FVC summation current transformer TA through earth leakage circuit-breaker QF, exchanges double
Be connected to ammeter DT with current transformer TA, current transformer TA is connected with A.C. contactor KM, A.C. contactor KM with reversible
PWM converter connects；
Described direct current distribution circuit 7 includes fuse FU, diverter RS, direct current energy meter PZ and D.C. contactor KM, battery
It is connected with D.C. contactor KM through overcurrent fuse FU, D.C. contactor KM is connected with diverter RS, diverter RS and two-way DC/DC
Current transformer connects, and direct current energy meter PZ is connected with diverter RS；
Described rectification circuit (8) is unidirectional AC/DC rectification circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620942061.4U CN205945096U (en) | 2016-08-25 | 2016-08-25 | V2G fills discharge device with reactive compensation function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620942061.4U CN205945096U (en) | 2016-08-25 | 2016-08-25 | V2G fills discharge device with reactive compensation function |
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| CN205945096U true CN205945096U (en) | 2017-02-08 |
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| CN201620942061.4U Withdrawn - After Issue CN205945096U (en) | 2016-08-25 | 2016-08-25 | V2G fills discharge device with reactive compensation function |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208141A (en) * | 2016-08-25 | 2016-12-07 | 国网山西省电力公司临汾供电公司 | A kind of V2G charge and discharge device with no-power compensation function |
| CN107499165A (en) * | 2017-09-01 | 2017-12-22 | 北京友信宏科电子科技股份有限公司 | A kind of vehicle-mounted All-in-One control device and system based on cascade magnetic coupling technology |
| CN109889075A (en) * | 2019-04-11 | 2019-06-14 | 广东美的制冷设备有限公司 | Drive control circuit and household appliance |
| CN111049379A (en) * | 2019-12-23 | 2020-04-21 | 广东工业大学 | Charge-discharge type DC-DC conversion circuit and charge-discharge system thereof |
-
2016
- 2016-08-25 CN CN201620942061.4U patent/CN205945096U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208141A (en) * | 2016-08-25 | 2016-12-07 | 国网山西省电力公司临汾供电公司 | A kind of V2G charge and discharge device with no-power compensation function |
| CN107499165A (en) * | 2017-09-01 | 2017-12-22 | 北京友信宏科电子科技股份有限公司 | A kind of vehicle-mounted All-in-One control device and system based on cascade magnetic coupling technology |
| CN109889075A (en) * | 2019-04-11 | 2019-06-14 | 广东美的制冷设备有限公司 | Drive control circuit and household appliance |
| CN111049379A (en) * | 2019-12-23 | 2020-04-21 | 广东工业大学 | Charge-discharge type DC-DC conversion circuit and charge-discharge system thereof |
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