CN102570560A - Charging-discharging system for V2G bilateral power conversion electric automobile and control method thereof - Google Patents

Charging-discharging system for V2G bilateral power conversion electric automobile and control method thereof Download PDF

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CN102570560A
CN102570560A CN2012100142408A CN201210014240A CN102570560A CN 102570560 A CN102570560 A CN 102570560A CN 2012100142408 A CN2012100142408 A CN 2012100142408A CN 201210014240 A CN201210014240 A CN 201210014240A CN 102570560 A CN102570560 A CN 102570560A
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CN102570560B (en
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颜湘武
张波
肖湘宁
陈征
郭春林
梁宇超
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Beijing Zhiyucheng Technology Co ltd
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North China Electric Power University
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Abstract

The invention discloses a charging-discharging system for a V2G bilateral power conversion electric automobile and a control method thereof, which belong to the technical field of intelligent power grids. In the charging-discharging system, a single-phase or three-phase voltage PWM (Pulse Width Modulation) converter (VSC) is taken as a first-grade power conversion circuit, so that energy conversion between an alternating-current power grid and a first direct-current bus is realized; and a symmetric half-bridge LLC (Logical Link Control) resonant bilateral direct current-direct current (DC/DC) converter is taken as a second-grade power conversion circuit, so that energy conversion between a direct-current bus and a power battery pack is realized. The charging-discharging system has the beneficial effects that: the current of the converter power grid side of the first-grade power conversion circuit is approximate to sine wave, so that the harmonic content is small; and the converting efficiency, dynamic performance and power density of the second-grade power conversion circuit are increased, the volume and weight of a charging-discharging device of the electric automobile are reduced, and the safety, reliability and economic efficiency of the system are improved effectively.

Description

V2G bi-directional power conversion electric automobile charge-discharge system and control method thereof
Technical field
The invention belongs to the intelligent grid technical field, particularly V2G bi-directional power conversion electric automobile charge-discharge system and control method thereof.
Background technology
Significantly raising along with electrical network level of intelligence and electric automobile recoverable amount; Following a large amount of electric automobile on-vehicle battery possibly become the distributed energy-storage units in the intelligent grid; Statistics shows that the time of an electric automobile 95% is in suspended state, and the car owner can be the electric automobile charging on-vehicle battery by electrical network in the electrical network off-peak load period; And to electrical network electric energy is provided by the electric automobile on-vehicle battery in the peak load of grid period, to obtain price difference.Between car owner and system call person, thisly realize that through Spot Price and intelligent electric meter the technology of intelligent recharge and discharge management is exactly V2G (Vehicle to Grid) technology.The V2G The Application of Technology can be regulated the peak-valley difference of electrical network effectively, reduces the subsequent use generate output of traditional peak regulation, improves the electrical network utilization ratio; China's wind-powered electricity generation total installation of generating capacity in 2011 reaches 0.418 hundred million kW, and automobile pollution has been broken through 100,000,000; If all automobiles are pressed the power conversion of charging electric vehicle machine main circuit; Charging electric vehicle machine total capacity is nearly 10 times of China's wind-powered electricity generation total installation of generating capacity; If wherein 1/5, promptly 0.2 hundred million automobiles are electric automobile, their on-vehicle battery will be enough to store the electric energy that all wind-powered electricity generation factories of China send; Huge electric automobile energy storage usefulness has been equivalent to increase effective reserve capacity of system; With the fluctuation of stabilizing the renewable energy power generation power output effectively, promote electrical network to admit the renewable energy power generation power of fluctuation, for the regulating power that strengthens electrical network provides new approach; And hundreds of electric automobile can also form little operation of power networks, can also be under emergency as emergency power supply, and for the safe operation of little electrical network provides effective support.
The tradition charger adopts controllable silicon bridge-type rectification circuit to constitute the charging major loop and realizes the charge in batteries function, adopts the power frequency phased approach but weak point is a Power Conversion, causes the ac current waveform distortion serious, and harmonic component is big; Power factor is low, and uncontrollable; And, adopt Industrial Frequency Transformer voltage of transformation and electrical isolation, loss is big, causes the complete machine effciency of energy transfer low, goes back the lot of consumption non-ferrous metal, and cost is high.
Compare with traditional silicon controlled rectifier phase control techniques, PWM high-frequency inversion technology is a kind of brand-new electric electronic current change technology.Theory analysis and practical experience show; The volume of electromagnetic device (transformer, inductance and electric capacity etc.) and quality all are inversely proportional to the square root of frequency of supply; Bring up to 20kHz (being that operating frequency improves 400 times) when operating frequency from power frequency 50Hz, the volume of electromagnetic device, quality will drop to the 5-10% of power frequency design load.Therefore, high frequencyization makes advantages such as the power supply kind equipment has the efficient height, noise is low, volume is little, dynamic property is good, cost is low, and developing direction is inevitable.
According to the difference of operation principle, the DC/DC Power Conversion can be divided into normal shock, instead swash, recommends and topological structure forms such as bridge-type.The symmetry inverse excitation type converter is the simplest because of its structure, and low cost, and good advantages such as transient response are very suitable for the low-power applications occasion; Push-pull converter is simple in structure, but switching tube need bear the input voltage of twice, also will add the crest value of impulse voltage that causes owing to the high frequency transformer leakage inductance in addition, so only be suitable for the lower occasion of converter operating voltage; Bridge-type DC/DC converter can be realized required large velocity ratio, and can satisfy the application demand of different capacity grade, thus in being fit to, the application of large-power occasions.
At present; PWM high frequency full-bridge inverting technology has become the mainstream technology of charging electric vehicle machine; Its main circuit mainly is made up of four parts: 1) lightning protection and input filter circuit: its effect mainly is that electromagnetic noise and the noise signal of importing power supply suppressed; Prevent power supply is disturbed, the high frequency clutter that also prevents power supply generation itself simultaneously is to Disturbance in Power Net; 2) rectification and filter circuit: alternating-current voltage source is transformed to the dc pulse moving voltage source, becomes a more level and smooth direct voltage source after the filtering, supply the next stage conversion; 3) inverter circuit: the direct current behind the rectifying and wave-filtering is become high-frequency alternating current, and this is the core of high frequency switch power, and frequency is high more, and the volume of contravariant transformer, weight are more little with the ratio of power output; 4) secondary rectification and filter circuit:,, export reliable and stable direct voltage (or electric current) through voltage (or electric current) closed-loop control with high-frequency alternating current rectification and filtering once more; Through the telecommunication management of battery management system, reach the charge mode requirement under the different operating modes of on-vehicle battery.
But, further analyze the circuit topology of charging electric vehicle machine, can find out that common charging electric vehicle machine does not still possess the ability with the electric energy feedback grid.
Summary of the invention
The present invention is directed to above-mentioned defective and disclose V2G bi-directional power conversion electric automobile charge-discharge system and control method thereof.Main circuit of the present invention adopts single-phase or three-phase voltage type PWM current transformer (VSC) is a first order power conversion circuit, realizes the energy conversion between AC network and the 1st dc bus, abbreviates " AC-DC (AC/DC) converter " as; Adopt symmetrical half bridge LLC resonant mode two-way DC-DC (DC/DC) converter as second level power conversion circuit, realize the energy conversion between dc bus and the power battery pack, abbreviate " two-way DC/DC converter " as.
V2G bi-directional power conversion electric automobile charge-discharge system comprises single-phase V2G bi-directional power conversion electric automobile charge-discharge system and three-phase V2G bi-directional power conversion electric automobile charge-discharge system;
The structure of single-phase V2G bi-directional power conversion electric automobile charge-discharge system is following: single phase alternating current power supply, single-phase electricity die mould PWM current transformer, the 1st dc bus, symmetrical half bridge LLC resonant mode two-way DC-DC converter and the 2nd dc bus cascade;
The single phase alternating current power supply live wire inserts the last underarm junction of a phase brachium pontis through linear inductance; Zero line directly connects the last underarm junction of another phase brachium pontis; The C11 dc filter capacitor is connected in parallel between the negative pole of anodal and the 1st dc bus of the 1st dc bus, and C12 dc filter capacitor and power battery pack all are connected in parallel between the negative pole bus of positive electrode bus and the 2nd dc bus of the 2nd dc bus;
The structure of three-phase V2G bi-directional power conversion electric automobile charge-discharge system is following: three-phase alternating-current supply A phase, three-phase alternating-current supply B all are connected to the mid point of the corresponding phase brachium pontis of three-phase voltage type PWM current transformer, three-phase voltage type PWM current transformer, the 1st dc bus, symmetrical half bridge LLC resonant mode two-way DC-DC converter and the 2nd dc bus cascade mutually mutually with three-phase alternating-current supply C;
Three-phase alternating-current supply A phase (Ua) live wire inserts the last underarm junction of first brachium pontis through the La linear inductance; Three-phase alternating-current supply B phase (Ub) live wire inserts the last underarm junction of second brachium pontis through the Lb linear inductance, and three-phase alternating-current supply C phase (Uc) live wire inserts the last underarm junction of the 3rd brachium pontis through the Lc linear inductance; The C11 dc filter capacitor is connected in parallel between the negative pole of anodal and the 1st dc bus of the 1st dc bus, and C12 dc filter capacitor and power battery pack all are connected in parallel between the negative pole bus of positive electrode bus and the 2nd dc bus of the 2nd dc bus.
The structure of said single-phase electricity die mould PWM current transformer is following: adopt the power switch pipe with inverse parallel diode to constitute upper arm and underarm, upper and lower arm series connection constitutes a brachium pontis; Two brachium pontis compose in parallel single-phase full bridge, DC side parallel C11 dc filter capacitor;
The structure of said three-phase voltage type PWM current transformer is following: adopt the power switch pipe with inverse parallel diode to constitute upper arm and underarm, upper and lower arm series connection constitutes a brachium pontis; Three brachium pontis compose in parallel three-phase bridge circuit, DC side parallel C12 dc filter capacitor.
The power of said symmetrical half bridge LLC resonant mode two-way DC-DC converter becomes to send and is divided into forward power and becomes to send to become with reverse power and send; The two-way DC/DC converter of symmetrical half bridge LLC resonant mode is made up of switching network, resonant network and rectifier-laod network cascade, is the center with the T high frequency transformer, its left side circuit and right side circuit structure symmetry.
Said symmetrical half bridge LLC resonant mode two-way DC-DC converter is realized the electrical isolation of ac power supply system and power battery pack through the T high frequency transformer.
Said symmetrical half bridge LLC resonant mode two-way DC-DC converter carries out forward power and becomes when sending; The annexation of switching network is following: the V5 switching tube of inverse parallel VD5 fast recovery diode is connected with the V6 switching tube of inverse parallel VD6 fast recovery diode, and is parallelly connected with the C11 dc filter capacitor then;
Said symmetrical half bridge LLC resonant mode two-way DC-DC converter carries out forward power and becomes when sending; The annexation of resonant network is following: VD13 diode series connection VD14 diode; VD9 diode series connection VD10 diode; C1 split resonant capacitance series connection C2 split resonant capacitance; Above-mentioned three is connected in parallel between the negative pole (S1-) of positive pole (S1+) and the 1st dc bus of the 1st dc bus, the common node of a termination VD9 diode, VD10 diode, C1 split resonant capacitance and the C2 split resonant capacitance of L1 resonant inductance, the common node of its another termination VD13 diode, VD14 diode and the former limit of T high frequency transformer winding one end; The former limit of the T high frequency transformer winding other end connects the common node of V5 switching tube and V6 switching tube;
Said symmetrical half bridge LLC resonant mode two-way DC-DC converter carries out forward power and becomes when sending; The annexation of rectifier-laod network is following: VD7 diode, VD8 diode; VD15 diode and VD16 diode are formed single-phase full bridge rectifier loop, and be parallelly connected with the C12 dc filter capacitor then.
Said symmetrical half bridge LLC resonant mode two-way DC-DC converter carries out forward power and becomes when sending, and VD13 diode and the series connection of VD14 diode provide overvoltage protection for the L1 resonant inductance; VD15 diode and VD16 diode are a rectifier arm of single-phase full bridge rectifier, and bypass L2 resonant inductance;
Said symmetrical half bridge LLC resonant mode two-way DC-DC converter carries out reverse power and becomes when sending, and VD15 diode and the series connection of VD16 diode provide overvoltage protection for the L2 resonant inductance; VD13 diode and VD14 diode are a rectifier arm of single-phase full bridge rectifier, and bypass L1 resonant inductance.
Said symmetrical half bridge LLC resonant mode two-way DC-DC converter carries out forward power and becomes when sending, and VD9 diode and the series connection of VD10 diode provide overvoltage protection for C1 split resonant capacitance and C2 split resonant capacitance; VD11 diode and VD12 diode suppress the LC resonance that single-phase full bridge rectifier loop occurs;
Said symmetrical half bridge LLC resonant mode two-way DC-DC converter carries out reverse power and becomes when sending, and VD11 diode and the series connection of VD12 diode provide overvoltage protection for C3 split resonant capacitance and C4 split resonant capacitance; VD9 diode and VD10 diode suppress the LC resonance that single-phase full bridge rectifier loop occurs.
Said C1 split resonant capacitance is connected with C2 split resonant capacitance and is constituted the split resonant capacitance and open up the benefit structure, and the rms current of C1 split resonant capacitance and C2 split resonant capacitance is the half the of single resonant capacitance, and its capacitance is half of single resonant capacitance;
Said C3 split resonant capacitance is connected with C4 split resonant capacitance and is constituted the split resonant capacitance and open up the benefit structure, and the rms current of C3 split resonant capacitance and C4 split resonant capacitance is the half the of single resonant capacitance, and its capacitance is half of single resonant capacitance.
The control method of V2G bi-directional power conversion electric automobile charge-discharge system comprises the control method of single-phase V2G bi-directional power conversion electric automobile charge-discharge system and the control method of three-phase V2G bi-directional power conversion electric automobile charge-discharge system;
The control method of single-phase V2G bi-directional power conversion electric automobile charge-discharge system may further comprise the steps:
1) presses signal from the single phase alternating current power supply live wire power getting; Voltage signal is followed the tracks of through phase-locked loop synchronously; Obtain the phase angle signal θ of actual voltage signal; Phase angle signal θ is delivered to space vector phase calculation module calculate, obtain the numerical value of sin θ and the numerical value of cos θ, the numerical value of sin θ and the numerical value of cos θ are delivered to α β/dq converter and dq/ α β converter respectively;
2) flow signal through i from the single phase alternating current power supply live wire power getting α-i βSignal generating circuit and α β/dq converter obtain the d-axis signal component i under the dq synchronous rotating frame dWith friendship axis signal component i q, the given signal of q shaft current And i qAfter the first adder computing, form error signal, this error signal obtains the given signal of q shaft voltage through first pi regulator Will
Figure BDA0000131806320000073
Be input in the dq/ α β converter;
3) the first dc voltage and current acquisition module is gathered the 1st DC bus-bar voltage u Dc1, the first dc voltage and current acquisition module plays the effect of electrical isolation and transformation of coefficient, u Dc1With the 1st DC bus-bar voltage set-point
Figure BDA0000131806320000074
Form error signal through the 3rd adder, error signal is inputed in the voltage regulator, after voltage regulator ratio, integral operation, obtain the given signal of d shaft current
Figure BDA0000131806320000075
i dWith
Figure BDA0000131806320000076
Through forming error signal after the second adder computing, this error signal obtains the given signal of d shaft voltage after the second pi regulator ratio, integral operation
Figure BDA0000131806320000077
Dq/ α β converter is with the given signal of d shaft voltage under the synchronous rotating frame
Figure BDA0000131806320000078
With the given signal of q shaft voltage Be transformed under the α β two phase rest frames
Figure BDA0000131806320000082
Signal with
Figure BDA0000131806320000083
Signal;
4) α β/abc converter is
Figure BDA0000131806320000086
signal under the abc three phase static coordinate system,
Figure BDA0000131806320000087
signal and
Figure BDA0000131806320000088
signal with signal under the α β two phase rest frames with
Figure BDA0000131806320000085
signal transformation further, obtains four road PWM modulation signals through the pwm signal generation module again;
5) the first dc voltage and current acquisition module obtains the operating current signal I on the negative pole bus of the 1st dc bus Dc1, I Dc1With the electric current set-point on the negative pole bus of the 1st dc bus
Figure BDA0000131806320000089
Through after the 4th adder computing error signal, this error signal obtains the electric current set-point on the negative pole bus of the 2nd dc bus after the 3rd pi regulator carries out the adjusting of ratio, integration Electric current I on the negative pole bus of the 2nd dc bus Dc2With
Figure BDA00001318063200000811
Get error signal through the computing of slender acanthopanax musical instruments used in a Buddhist or Taoist mass, this error signal obtains the control signal on the 2nd dc bus after the 4th pi regulator carries out ratio, integration adjusting, this control signal is inputed to the reciprocal transformation end of Power Conversion direction controller;
6) the 2nd DC bus-bar voltage transducer is connected between the positive electrode bus and negative pole bus of the 2nd dc bus, is used to detect the positive electrode bus of the 2nd dc bus and the voltage between the negative pole bus; The 2nd dc bus current transducer is connected on the 2nd dc bus negative pole bus; Be used to detect the electric current of the 2nd dc bus; Above-mentioned electric current and voltage obtain the detection voltage U of the 2nd dc bus after the second dc voltage and current acquisition module carries out electrical isolation and transformation of coefficient Dc2With the detection electric current I on the 2nd dc bus Dc2, U Dc2With the given signal of the 2nd DC bus-bar voltage
Figure BDA00001318063200000812
Try to achieve error signal through the 7th adder, this error signal is inputed to the constant voltage mode terminal of mode converter, the electric current I on the 2nd dc bus Dc2With the electric current set-point on the 2nd dc bus
Figure BDA00001318063200000813
Try to achieve error signal through the 8th adder, this error signal is inputed to the constant current mode terminal of mode converter, mode converter carries out model selection, carries out obtaining the electric current set-point on the 1st dc bus after ratio, integration regulate through the 5th pi regulator
Figure BDA0000131806320000091
With the operating current I on the 1st dc bus Dc1Try to achieve error signal through the 6th adder, this error signal is input to the positive-going transition end of Power Conversion direction controller;
7) the Power Conversion direction controller is confirmed forward and reverse conversion of power; Carry out the conversion of voltage through Voltage-to-frequency Converter again to frequency; After the drive signal generation module forms the upper and lower bridge arm complementary signal with 180 ° of duty ratios, finally generate g1 drive signal, g2 drive signal, g3 drive signal and g4 drive signal;
The control method of said three-phase V2G bi-directional power conversion electric automobile charge-discharge system may further comprise the steps:
1) from three-phase alternating-current supply A phase (Ua) live wire, three-phase alternating-current supply B phase (Ub) live wire and three-phase alternating-current supply C mutually (Uc) live wire get three-phase voltage signal and three-phase current signal; Realize that through 3/2 converter the three phase static coordinate is tied to the conversion of two phase rest frames, obtains u αSignal, u βSignal, i αSignal and i βSignal, u αSignal and u βSignal obtains θ after the phase angle computing module calculates sine function sin θ, cosine function value cos θ deliver to sin θ and cos θ in the dq/ α β converter;
2) i αSignal and i βSignal obtains the d-axis signal component i under the dq synchronous rotating frame through α β/dq converter dWith friendship axis signal component i q, the given signal of q shaft current
Figure BDA0000131806320000093
And i qAfter the first adder computing, form error signal, this error signal obtains the given signal of q shaft voltage through first pi regulator
Figure BDA0000131806320000094
Will
Figure BDA0000131806320000095
Be input in the dq/ α β converter;
3) the first dc voltage and current acquisition module is gathered the 1st DC bus-bar voltage u Dc1, the first dc voltage and current acquisition module plays the effect of electrical isolation and transformation of coefficient, u Dc1With the 1st DC bus-bar voltage set-point Form error signal through the 3rd adder, error signal is inputed in the voltage regulator, after voltage regulator ratio, integral operation, obtain the given signal of d shaft current
Figure BDA0000131806320000101
i dWith
Figure BDA0000131806320000102
Through forming error signal after the second adder computing, this error signal obtains the given signal of d shaft voltage after the second pi regulator ratio, integral operation
Figure BDA0000131806320000103
Dq/ α β converter is with the given signal of d shaft voltage under the synchronous rotating frame
Figure BDA0000131806320000104
With the given signal of q shaft voltage
Figure BDA0000131806320000105
Be transformed under the α β two phase rest frames
Figure BDA0000131806320000106
Signal with Signal;
4) α β/abc converter is
Figure BDA00001318063200001010
signal under the abc three phase static coordinate system,
Figure BDA00001318063200001011
signal and
Figure BDA00001318063200001012
signal with
Figure BDA0000131806320000108
signal under the α β two phase rest frames with
Figure BDA0000131806320000109
signal transformation further, obtains six road PWM modulation signals through the pwm signal generation module again;
5) the first dc voltage and current acquisition module obtains the operating current signal I on the negative pole bus of the 1st dc bus Dc1, I Dc1With the electric current set-point on the negative pole bus of the 1st dc bus
Figure BDA00001318063200001013
Through after the 4th adder computing error signal, this error signal obtains the electric current set-point on the negative pole bus of the 2nd dc bus after the 3rd pi regulator carries out the adjusting of ratio, integration
Figure BDA00001318063200001014
Electric current I on the negative pole bus of the 2nd dc bus Dc2With Get error signal through the computing of slender acanthopanax musical instruments used in a Buddhist or Taoist mass, this error signal obtains the control signal on the 2nd dc bus after the 4th pi regulator carries out ratio, integration adjusting, this control signal is inputed to the reciprocal transformation end of Power Conversion direction controller;
6) the 2nd DC bus-bar voltage transducer is connected between the positive electrode bus and negative pole bus of the 2nd dc bus, is used to detect the positive electrode bus of the 2nd dc bus and the voltage between the negative pole bus; The 2nd dc bus current transducer is connected on the 2nd dc bus negative pole bus; Be used to detect the electric current of the 2nd dc bus; Above-mentioned electric current and voltage obtain the detection voltage U of the 2nd dc bus after the second dc voltage and current acquisition module carries out electrical isolation and transformation of coefficient Dc2With the detection electric current I on the 2nd dc bus Dc2, U Dc2With the given signal of the 2nd DC bus-bar voltage Try to achieve error signal through the 7th adder, this error signal is inputed to the constant voltage mode terminal of mode converter, the electric current I on the 2nd dc bus Dc2With the electric current set-point on the 2nd dc bus
Figure BDA0000131806320000112
Try to achieve error signal through the 8th adder, this error signal is inputed to the constant current mode terminal of mode converter, mode converter carries out model selection, carries out obtaining the electric current set-point on the 1st dc bus after ratio, integration regulate through the 5th pi regulator
Figure BDA0000131806320000114
With the operating current I on the 1st dc bus Dc1Try to achieve error signal through the 6th adder, this error signal is input to the positive-going transition end of Power Conversion direction controller;
7) the Power Conversion direction controller is confirmed forward and reverse conversion of power; Carry out the conversion of voltage through Voltage-to-frequency Converter again to frequency; After the drive signal generation module forms the upper and lower bridge arm complementary signal with 180 ° of duty ratios, finally generate g1 drive signal, g2 drive signal, g3 drive signal and g4 drive signal.
The invention has the beneficial effects as follows: the one-level power conversion circuit is in that to keep DC bus-bar voltage constant; Automatically realize on the basis of energy bidirectional modulation between AC network and the dc bus; Unity power factor (UPF) and sine wave AC electric current, low harmonic wave (converter grid side electric current is near sinusoidal wave, and harmonic content is little) have also been realized; The secondary power translation circuit adopts symmetrical half bridge LLC resonant mode two-way DC converter to improve conversion efficiency, dynamic property and power density; Reduced the volume and weight of electric automobile charge and discharge device; And through the high-frequency inversion transformer electrical link of AC system and power battery pack is kept apart fully, effectively improve fail safe, reliability and the economy of system.
Description of drawings
Fig. 1 is a V2G bi-directional power conversion electric automobile charge-discharge system block diagram;
Fig. 2 is the single-phase main circuit topology that discharges and recharges;
Fig. 3 discharges and recharges main circuit topology for three-phase;
Fig. 4 is the single-phase main circuit topology control method block diagram that discharges and recharges;
Fig. 5 discharges and recharges main circuit topology control method block diagram for three-phase;
Basic circuit when Fig. 6 is the transmission of symmetrical half bridge LLC resonant mode two-way DC converter forward.
Embodiment
Below in conjunction with accompanying drawing to further explain of the present invention.
As shown in Figure 1, the invention discloses V2G bi-directional power conversion electric automobile charge-discharge system and control method thereof.Main circuit adopts single-phase or three-phase voltage type PWM current transformer (VSC) is the one-level power conversion circuit; Realize the energy conversion between AC network and the 1st dc bus (forming), abbreviate " AC/DC converter " as by the positive electrode bus S1+ of the 1st dc bus and the negative pole bus S1-of the 1st dc bus; Adopt symmetrical half bridge LLC resonant mode two-way DC-DC converter as the secondary power translation circuit, realize the energy conversion between dc bus and the EV power battery pack, abbreviate " DC/DC converter " as; AC/DC converter and DC/DC converter are connected in parallel through the 1st dc bus.V2G bi-directional power conversion electric automobile charge-discharge system is realized the collection of AC side voltage, electric current; The two closed-loop controls of the SVPWM of AC/DC converter; The control of the two-way closed-loop control of DC/DC converter and two-way changing, and accumulator cell charging and discharging information gatherings such as the voltage of EV power battery pack, electric current.
As shown in Figure 2, the structure of single-phase V2G bi-directional power conversion electric automobile charge-discharge system is following: single phase alternating current power supply U, single-phase electricity die mould PWM current transformer, the 1st dc bus (being made up of the positive electrode bus S1+ of the 1st dc bus and the negative pole bus S1-of the 1st dc bus), symmetrical half bridge LLC resonant mode two-way DC-DC converter and the 2nd dc bus (being made up of the positive electrode bus S2+ of the 2nd dc bus and the negative pole bus S2-of the 2nd dc bus) cascade;
Single phase alternating current power supply U live wire inserts the last underarm junction of a phase brachium pontis through linear inductance L; Zero line directly connects the last underarm junction of another phase brachium pontis; The C11 dc filter capacitor is connected in parallel between the negative pole S1-of anodal S1+ and the 1st dc bus of the 1st dc bus, and C12 dc filter capacitor and power battery pack all are connected in parallel between the negative pole bus S2-of positive electrode bus S2+ and the 2nd dc bus of the 2nd dc bus;
The structure of single-phase electricity die mould PWM current transformer is following: V1 power switch pipe and VD1 inverse parallel diode constitute first upper arm; V2 power switch pipe and VD2 inverse parallel diode constitute first underarm; V3 power switch pipe and VD3 inverse parallel diode constitute second upper arm, and V4 power switch pipe and VD4 inverse parallel diode constitute second underarm; First upper arm and the series connection of first underarm constitute first brachium pontis, and second upper arm and the series connection of second underarm constitute second brachium pontis, and two brachium pontis compose in parallel single-phase full bridge; DC side parallel C11 dc filter capacitor, single phase alternating current power supply U live wire inserts the last underarm junction of first brachium pontis through linear inductance L, and zero line directly connects the last underarm junction of second brachium pontis.
As shown in Figure 3; The structure of three-phase V2G bi-directional power conversion electric automobile charge-discharge system is following: three-phase alternating-current supply A phase Ua, three-phase alternating-current supply B phase Ub and three-phase alternating-current supply C Uc mutually all are connected to the mid point of the corresponding phase brachium pontis of three-phase voltage type PWM current transformer, three-phase voltage type PWM current transformer, the 1st dc bus (being made up of the positive electrode bus S1+ of the 1st dc bus and the negative pole bus S1-of the 1st dc bus), symmetrical half bridge LLC resonant mode two-way DC-DC converter and the 2nd dc bus (being made up of the positive electrode bus S2+ of the 2nd dc bus and the negative pole bus S2-of the 2nd dc bus) cascade;
Three-phase alternating-current supply A phase Ua live wire inserts the last underarm junction of first brachium pontis through the La linear inductance; Three-phase alternating-current supply B phase Ub live wire inserts the last underarm junction of second brachium pontis through the Lb linear inductance, and three-phase alternating-current supply C phase Uc live wire inserts the last underarm junction of the 3rd brachium pontis through the Lc linear inductance; The C11 dc filter capacitor is connected in parallel between the negative pole S1-of anodal S1+ and the 1st dc bus of the 1st dc bus, and C12 dc filter capacitor and power battery pack all are connected in parallel between the negative pole bus S2-of positive electrode bus S2+ and the 2nd dc bus of the 2nd dc bus.
The structure of three-phase voltage type PWM current transformer is following: V17 leads switching tube and VD17 inverse parallel diode constitutes first upper arm; V18 leads switching tube and VD18 inverse parallel diode constitutes first underarm; V19 power switch pipe and VD19 inverse parallel diode constitute second upper arm; V20 power switch pipe and VD20 inverse parallel diode constitute second underarm, and V21 power switch pipe and VD21 inverse parallel diode constitute the 3rd upper arm, and V22 power switch pipe and VD22 inverse parallel diode constitute the 3rd underarm; First upper arm and the series connection of first underarm constitute first brachium pontis; Second upper arm and the series connection of second underarm constitute second brachium pontis, and the 3rd upper arm and the series connection of the 3rd underarm constitute the 3rd brachium pontis, and three brachium pontis compose in parallel three-phase bridge circuit; DC side parallel C11 dc filter capacitor; The first three-phase alternating-current supply Ua live wire inserts the last underarm junction of first brachium pontis through the La linear inductance; The second three-phase alternating-current supply Ub live wire inserts the last underarm junction of second brachium pontis through the Lb linear inductance; The 3rd three-phase alternating-current supply Uc live wire inserts the last underarm junction of the 3rd brachium pontis through the Lc linear inductance, and neutral point is N.
The power of symmetrical half bridge LLC resonant mode two-way DC-DC converter becomes to send and is divided into forward power and becomes to send to become with reverse power and send; To send be power from port one-1 ' send to the change of port 2-2 ' direction if the forward power of converter becomes, and the reverse power of converter becomes that to send be that power send to the change of port one-1 ' direction from port 2-2 '.The two-way DC/DC converter of symmetrical half bridge LLC resonant mode is connected with rectifier-laod network by switching network, resonant network and is constituted, and is the center with the T high frequency transformer, its left side circuit and right side circuit structure symmetry, and the no-load voltage ratio of T high frequency transformer is 1: 1.
Symmetrical half bridge LLC resonant mode two-way DC-DC converter is realized the electrical isolation of ac power supply system (referring to single phase alternating current power supply or three-phase alternating-current supply) and power battery pack through the T high frequency transformer.
Symmetrical half bridge LLC resonant mode two-way DC-DC converter carries out forward power and becomes when sending; The annexation of switching network is following: the V5 switching tube of inverse parallel VD5 fast recovery diode is connected with the V6 switching tube of inverse parallel VD6 fast recovery diode, and is parallelly connected with the C11 dc filter capacitor then;
Symmetrical half bridge LLC resonant mode two-way DC-DC converter carries out forward power and becomes when sending; The annexation of resonant network is following: VD13 diode series connection VD14 diode; VD9 diode series connection VD10 diode; C1 split resonant capacitance series connection C2 split resonant capacitance; Above-mentioned three is connected in parallel between the negative pole (S1-) of positive pole (S1+) and the 1st dc bus of the 1st dc bus, the common node of a termination VD9 diode, VD10 diode, C1 split resonant capacitance and the C2 split resonant capacitance of L1 resonant inductance, the common node of its another termination VD13 diode, VD14 diode and the former limit of T high frequency transformer winding one end; The former limit of the T high frequency transformer winding other end connects the common node of V5 switching tube and V6 switching tube;
Symmetrical half bridge LLC resonant mode two-way DC-DC converter carries out forward power and becomes when sending; The annexation of rectifier-laod network is following: VD7 diode, VD8 diode; VD15 diode and VD16 diode are formed single-phase full bridge rectifier loop, and be parallelly connected with the C12 dc filter capacitor then.
When the switching network of high frequency transformer one side, when resonant network works, the switching network of opposite side, resonant network develop automatically and are rectifier-laod network, and the both sides network together constitutes complete LLC controlled resonant converter, realizes the Power Conversion of this direction; Because structure is symmetry fully, reverse also establishment, when carrying out transformation by reciprocal direction, topological structure is formed reverse LLC controlled resonant converter with automatic reconfiguration, realizes reverse Power Conversion.
While symmetrical half bridge LLC resonant mode two-way DC-DC converter carries out forward power and becomes when sending, and VD13 diode and the series connection of VD14 diode provide overvoltage protection for the L1 resonant inductance; VD15 diode and VD16 diode are a rectifier arm of single-phase full bridge rectifier, and bypass L2 resonant inductance; Symmetrical half bridge LLC resonant mode two-way DC-DC converter carries out reverse power and becomes when sending, and VD15 diode and the series connection of VD16 diode provide overvoltage protection for the L2 resonant inductance; VD13 diode and VD14 diode are a rectifier arm of single-phase full bridge rectifier, and bypass L1 resonant inductance.
On the whole, in a side of T high frequency transformer, diode can be used as simple, the cheap overvoltage protection of resonant inductance in the resonant network; And simultaneously at opposite side; The diode of symmetric position is automatically converted to a rectifier arm of single-phase full bridge rectifier; And with homonymy this moment no resonant inductance separate from main circuit; Avoid producing big internal impedance pressure drop, thereby relevant diode have clamper protection, rectification and separate complex function effect such as output loop internal impedance automatically in the outlet side loop.
Symmetrical half bridge LLC resonant mode two-way DC-DC converter carries out forward power and becomes when sending, and VD9 diode and the series connection of VD10 diode provide overvoltage protection for C1 split resonant capacitance and C2 split resonant capacitance; VD11 diode and VD12 diode suppress the LC resonance that single-phase full bridge rectifier loop occurs;
Symmetrical half bridge LLC resonant mode two-way DC-DC converter carries out reverse power and becomes when sending, and VD11 diode and the series connection of VD12 diode provide overvoltage protection for C3 split resonant capacitance and C4 split resonant capacitance; VD9 diode and VD10 diode suppress the LC resonance that single-phase full bridge rectifier loop occurs.
C1 split resonant capacitance is connected with C2 split resonant capacitance and is constituted the split resonant capacitance and open up the benefit structure, and the rms current of C1 split resonant capacitance and C2 split resonant capacitance is the half the of single resonant capacitance, and its capacitance is half of single resonant capacitance;
C3 split resonant capacitance is connected with C4 split resonant capacitance and is constituted the split resonant capacitance and open up the benefit structure, and the rms current of C3 split resonant capacitance and C4 split resonant capacitance is the half the of single resonant capacitance, and its capacitance is half of single resonant capacitance.
Be illustrated in figure 6 as the two-way DC/DC converter of symmetrical half bridge LLC resonant mode and carry out forward power and become the basic circuit when sending, at this moment, the equivalence of T high frequency transformer is L mFormer limit magnetizing inductance is parallelly connected with desirable high frequency transformer, and it is composed in series by switching network, resonant network and rectifier-laod network.
The annexation of switching network is following: the V5 switching tube of inverse parallel VD5 fast recovery diode is connected with the V6 switching tube of inverse parallel VD6 fast recovery diode, and is parallelly connected with the C11 dc filter capacitor then.
The annexation of resonant network is following: C1 split resonant capacitance series connection C2 split resonant capacitance, a termination C1 split resonant capacitance of L1 resonant inductance and the common node of C2 split resonant capacitance, the former limit of its another termination Lm magnetizing inductance; The former limit of Lm magnetizing inductance connects the common node of V5 switching tube and V6 switching tube, and the former limit of Lm magnetizing inductance is parallelly connected with ideal transformer.Resonant network mainly is equivalent to a voltage divider, and its impedance changes with the variation of operating frequency.
At T high frequency transformer secondary, the annexation of rectifier-laod network is following: VD7 diode and VD8 one utmost point pipe and the rectifier arm of formation of connecting, and being situated between connects an end of high frequency transformer secondary winding; The VD15 diode is connected with the VD16 diode and is constituted another rectifier arm, is situated between to connect the other end of high frequency transformer secondary winding; Article two, rectifier arm common cathode, anode connection altogether, parallelly connected with C12 stream filter capacitor again.
The control method of V2G bi-directional power conversion electric automobile charge-discharge system comprises the control method of single-phase V2G bi-directional power conversion electric automobile charge-discharge system and the control method of three-phase V2G bi-directional power conversion electric automobile charge-discharge system; As shown in Figure 4, the control method of single-phase V2G bi-directional power conversion electric automobile charge-discharge system may further comprise the steps:
1) presses signal from single phase alternating current power supply U live wire power getting; Voltage signal is followed the tracks of through phase-locked loop (PLL) 1 synchronously; Obtain the phase angle signal θ of actual voltage signal; Phase angle signal θ is delivered to space vector phase calculation module 2 calculate, obtain the numerical value of sin θ and the numerical value of cos θ, the numerical value of sin θ and the numerical value of cos θ are delivered to α β/dq converter 4 and dq/ α β converter 11 respectively;
2) flow signal through i from single phase alternating current power supply U live wire power getting α-i β Signal generating circuit 3 obtains the d-axis signal component i under the dq synchronous rotating frame with α β/dq converter 4 dWith friendship axis signal component i q, the given signal of q shaft current
Figure BDA0000131806320000181
And i qAfter first adder 6 computings, form error signal, this error signal obtains the given signal of q shaft voltage through a PI (ratio-integration) adjuster 8
Figure BDA0000131806320000182
Will
Figure BDA0000131806320000183
Be input in the dq/ α β converter 11;
3) the first dc voltage and current acquisition module 12 is gathered the 1st DC bus-bar voltage u Dc1(C11 dc filter capacitor voltage), the first dc voltage and current acquisition module 12 plays the effect of electrical isolation and transformation of coefficient, u Dc1With the 1st DC bus-bar voltage set-point
Figure BDA0000131806320000184
Form error signal through the 3rd adder 14, error signal is inputed in the voltage regulator 13, after voltage regulator 13 ratios, integral operation, obtain the given signal of d shaft current
Figure BDA0000131806320000185
i dWith
Figure BDA0000131806320000186
Through forming error signal after second adder 7 computings, this error signal obtains the given signal of d shaft voltage after second pi regulator, 9 ratios, integral operation
Figure BDA0000131806320000187
Dq/ α β converter 11 is with the given signal of d shaft voltage under the synchronous rotating frame With the given signal of q shaft voltage
Figure BDA0000131806320000189
Be transformed under the α β two phase rest frames
Figure BDA00001318063200001810
Signal with
Figure BDA00001318063200001811
Signal;
4) α β/abc converter 10 is signal under the abc three phase static coordinate system,
Figure BDA0000131806320000194
signal and
Figure BDA0000131806320000195
signal with
Figure BDA0000131806320000191
signal under the α β two phase rest frames with
Figure BDA0000131806320000192
signal transformation further, obtains four road PWM modulation signals through pwm signal generation module 5 again;
5) the 1st dc bus current transducer is connected on the negative pole bus S1-of the 1st dc bus; It is positioned at the 1st dc bus and below the dc filter capacitor C11 intersection point; Play the effect of sensing dc current signal, the first dc voltage and current acquisition module 12 obtains the operating current signal I on the negative pole bus S1-of the 1st dc bus Dc1, I Dc1With the electric current set-point on the negative pole bus S1-of the 1st dc bus
Figure BDA0000131806320000196
Through after 15 computings of the 4th adder error signal, this error signal obtains the electric current set-point on the negative pole bus S2-of the 2nd dc bus after the 3rd pi regulator 16 carries out the adjusting of ratio, integration The negative pole bus S2-of the 2nd dc bus goes up electric current I Dc2With
Figure BDA0000131806320000198
Get error signal through 17 computings of slender acanthopanax musical instruments used in a Buddhist or Taoist mass; This error signal is after the 4th pi regulator 18 carries out ratio, integration adjusting (having realized reciprocal transformation control); Obtain the control signal on the 2nd dc bus, this control signal is inputed to the reciprocal transformation end of Power Conversion direction controller 21;
6) the 2nd DC bus-bar voltage transducer is connected between the positive electrode bus S2+ and negative pole bus S2-of the 2nd dc bus, is used to detect the positive electrode bus S2+ of the 2nd dc bus and the voltage between the negative pole bus S2-; The 2nd dc bus current transducer is connected on the 2nd dc bus negative pole bus S2-; Be used to detect the electric current of the 2nd dc bus; Above-mentioned electric current and voltage obtain the detection voltage U of the 2nd dc bus after the second dc voltage and current acquisition module 27 carries out electrical isolation and transformation of coefficient Dc2With the detection electric current I on the 2nd dc bus Dc2, U Dc2With the given signal of the 2nd DC bus-bar voltage
Figure BDA0000131806320000199
Try to achieve error signal through the 7th adder 25, this error signal is inputed to the constant voltage mode terminal of mode converter 24, the electric current I on the 2nd dc bus Dc2With the electric current set-point on the 2nd dc bus
Figure BDA0000131806320000201
Try to achieve error signal through the 8th adder 26; This error signal is inputed to the constant current mode terminal of mode converter 24; Mode converter 24 carries out model selection, after the 5th pi regulator 23 carries out ratio, integration adjusting, obtains the electric current set-point on the 1st dc bus With the operating current I on the 1st dc bus Dc1Try to achieve error signal (having realized positive-going transition control) through the 6th adder 22, this error signal is input to the positive-going transition end of Power Conversion direction controller 21;
7) Power Conversion direction controller 21 is confirmed forward and reverse conversion of power; Carry out the conversion of voltage through Voltage-to-frequency Converter 20 again to frequency; After drive signal generation module 19 forms the upper and lower bridge arm complementary signal with 180 ° of duty ratios; Final g1 drive signal, g2 drive signal, g3 drive signal and the g4 drive signal of generating, g1 drive signal, g2 drive signal, g3 drive signal and g4 drive signal are respectively applied for and drive V5 switching tube and V6 switching tube, V8 switching tube and V7 switching tube;
As shown in Figure 5, the control method of three-phase V2G bi-directional power conversion electric automobile charge-discharge system may further comprise the steps:
1) from three-phase alternating-current supply A phase Ua live wire, three-phase alternating-current supply B phase Ub live wire and three-phase alternating-current supply C mutually the Uc live wire get three-phase voltage signal and three-phase current signal, realize that through 3/2 converter 31 the three phase static coordinates are tied to the conversion of two phase rest frames, obtain u αSignal, u βSignal, i αSignal and i βSignal, u αSignal and u βSignal obtains θ after phase angle computing module 32 calculates sine function sin θ, cosine function value cos θ deliver to sin θ and cos θ in the dq/ α β converter 11;
2) i αSignal and i βSignal obtains the d-axis signal component i under the dq synchronous rotating frame through α β/dq converter 4 dWith friendship axis signal component i q, the given signal of q shaft current And i qAfter first adder 6 computings, form error signal, this error signal obtains the given signal of q shaft voltage through a PI (ratio-integration) adjuster 8
Figure BDA0000131806320000211
Will
Figure BDA0000131806320000212
Be input in the dq/ α β converter 11;
3) the first dc voltage and current acquisition module 12 is gathered the 1st DC bus-bar voltage u Dc1(C11 dc filter capacitor voltage), the first dc voltage and current acquisition module 12 plays the effect of electrical isolation and transformation of coefficient, u Dc1With the 1st DC bus-bar voltage set-point
Figure BDA0000131806320000213
Form error signal through the 3rd adder 14, error signal is inputed in the voltage regulator 13, after voltage regulator 13 ratios, integral operation, obtain the given signal of d shaft current
Figure BDA0000131806320000214
i dWith
Figure BDA0000131806320000215
Through forming error signal after second adder 7 computings, this error signal obtains the given signal of d shaft voltage after second pi regulator, 9 ratios, integral operation
Figure BDA0000131806320000216
Dq/ α β converter 11 is with the given signal of d shaft voltage under the synchronous rotating frame
Figure BDA0000131806320000217
With the given signal of q shaft voltage
Figure BDA0000131806320000218
Be transformed under the α β two phase rest frames
Figure BDA0000131806320000219
Signal with
Figure BDA00001318063200002110
Signal;
4) α β/abc converter 10 is signal under the abc three phase static coordinate system,
Figure BDA00001318063200002114
signal and
Figure BDA00001318063200002115
signal with
Figure BDA00001318063200002111
signal under the α β two phase rest frames with
Figure BDA00001318063200002112
signal transformation further, obtains six road PWM modulation signals through pwm signal generation module 5 again;
5) the 1st dc bus current transducer is connected on the negative pole bus S1-of the 1st dc bus; It is positioned at the 1st dc bus and below the dc filter capacitor C11 intersection point; Play the effect of sensing dc current signal, the first dc voltage and current acquisition module 12 obtains the operating current signal I on the negative pole bus S1-of the 1st dc bus Dc1, I Dc1With the electric current set-point on the negative pole bus S1-of the 1st dc bus
Figure BDA00001318063200002116
Through after 15 computings of the 4th adder error signal, this error signal obtains the electric current set-point on the negative pole bus S2-of the 2nd dc bus after the 3rd pi regulator 16 carries out the adjusting of ratio, integration
Figure BDA00001318063200002117
The negative pole bus S2-of the 2nd dc bus goes up electric current I Dc2With Get error signal through 17 computings of slender acanthopanax musical instruments used in a Buddhist or Taoist mass; This error signal is after the 4th pi regulator 18 carries out ratio, integration adjusting (having realized reciprocal transformation control); Obtain the control signal on the 2nd dc bus, this control signal is inputed to the reciprocal transformation end of Power Conversion direction controller 21;
6) the 2nd DC bus-bar voltage transducer is connected between the positive electrode bus S2+ and negative pole bus S2-of the 2nd dc bus, is used to detect the positive electrode bus S2+ of the 2nd dc bus and the voltage between the negative pole bus S2-; The 2nd dc bus current transducer is connected on the 2nd dc bus negative pole bus S2-; Be used to detect the electric current of the 2nd dc bus; Above-mentioned electric current and voltage obtain the detection voltage U of the 2nd dc bus after the second dc voltage and current acquisition module 27 carries out electrical isolation and transformation of coefficient Dc2With the detection electric current I on the 2nd dc bus Dc2, U Dc2With the given signal of the 2nd DC bus-bar voltage
Figure BDA0000131806320000221
Try to achieve error signal through the 7th adder 25, this error signal is inputed to the constant voltage mode terminal of mode converter 24, the electric current I on the 2nd dc bus Dc2With the electric current set-point on the 2nd dc bus
Figure BDA0000131806320000222
Try to achieve error signal through the 8th adder 26; This error signal is inputed to the constant current mode terminal of mode converter 24; Mode converter 24 carries out model selection, after the 5th pi regulator 23 carries out ratio, integration adjusting, obtains the electric current set-point on the 1st dc bus
Figure BDA0000131806320000223
With the operating current I on the 1st dc bus Dc1Try to achieve error signal (having realized positive-going transition control) through the 6th adder 22, this error signal is input to the positive-going transition end of Power Conversion direction controller 21;
7) Power Conversion direction controller 21 is confirmed forward and reverse conversion of power; Carry out the conversion of voltage through Voltage-to-frequency Converter 20 again to frequency; After drive signal generation module 19 forms the upper and lower bridge arm complementary signal with 180 ° of duty ratios; Final g1 drive signal, g2 drive signal, g3 drive signal and the g4 drive signal of generating, g1 drive signal, g2 drive signal, g3 drive signal and g4 drive signal are respectively applied for and drive V5 switching tube and V6 switching tube, V8 switching tube and V7 switching tube.

Claims (10)

1.V2G bi-directional power conversion electric automobile charge-discharge system is characterized in that, it comprises single-phase V2G bi-directional power conversion electric automobile charge-discharge system and three-phase V2G bi-directional power conversion electric automobile charge-discharge system;
The structure of single-phase V2G bi-directional power conversion electric automobile charge-discharge system is following: single phase alternating current power supply (U), single-phase electricity die mould PWM current transformer, the 1st dc bus, symmetrical half bridge LLC resonant mode two-way DC-DC converter and the 2nd dc bus cascade;
Single phase alternating current power supply (U) live wire inserts the last underarm junction of a phase brachium pontis through linear inductance (L); Zero line directly connects the last underarm junction of another phase brachium pontis; The C11 dc filter capacitor is connected in parallel between the negative pole (S1-) of positive pole (S1+) and the 1st dc bus of the 1st dc bus, and C12 dc filter capacitor and power battery pack all are connected in parallel between the negative pole bus (S2-) of positive electrode bus (S2+) and the 2nd dc bus of the 2nd dc bus;
The structure of three-phase V2G bi-directional power conversion electric automobile charge-discharge system is following: three-phase alternating-current supply A phase (Ua), three-phase alternating-current supply B phase (Ub) and three-phase alternating-current supply C (Uc) mutually all are connected to the mid point of the corresponding phase brachium pontis of three-phase voltage type PWM current transformer, three-phase voltage type PWM current transformer, the 1st dc bus, symmetrical half bridge LLC resonant mode two-way DC-DC converter and the 2nd dc bus cascade;
Three-phase alternating-current supply A phase (Ua) live wire inserts the last underarm junction of first brachium pontis through the La linear inductance; Three-phase alternating-current supply B phase (Ub) live wire inserts the last underarm junction of second brachium pontis through the Lb linear inductance, and three-phase alternating-current supply C phase (Uc) live wire inserts the last underarm junction of the 3rd brachium pontis through the Lc linear inductance; The C11 dc filter capacitor is connected in parallel between the negative pole (S1-) of positive pole (S1+) and the 1st dc bus of the 1st dc bus, and C12 dc filter capacitor and power battery pack all are connected in parallel between the negative pole bus (S2-) of positive electrode bus (S2+) and the 2nd dc bus of the 2nd dc bus.
2. V2G bi-directional power conversion electric automobile charge-discharge system according to claim 1; It is characterized in that; The structure of said single-phase electricity die mould PWM current transformer is following: adopt the power switch pipe with inverse parallel diode to constitute upper arm and underarm, upper and lower arm series connection constitutes a brachium pontis; Two brachium pontis compose in parallel single-phase full bridge, DC side parallel C11 dc filter capacitor;
The structure of said three-phase voltage type PWM current transformer is following: adopt the power switch pipe with inverse parallel diode to constitute upper arm and underarm, upper and lower arm series connection constitutes a brachium pontis; Three brachium pontis compose in parallel three-phase bridge circuit, DC side parallel C12 dc filter capacitor.
3. V2G bi-directional power conversion electric automobile charge-discharge system according to claim 1 is characterized in that, the power of said symmetrical half bridge LLC resonant mode two-way DC-DC converter becomes to send and is divided into forward power and becomes to send to become with reverse power and send; The two-way DC/DC converter of symmetrical half bridge LLC resonant mode is made up of switching network, resonant network and rectifier-laod network cascade, is the center with the T high frequency transformer, its left side circuit and right side circuit structure symmetry.
4. V2G bi-directional power conversion electric automobile charge-discharge system according to claim 1; It is characterized in that said symmetrical half bridge LLC resonant mode two-way DC-DC converter is realized the electrical isolation of ac power supply system and power battery pack through the T high frequency transformer.
5. V2G bi-directional power conversion electric automobile charge-discharge system according to claim 1; It is characterized in that; Said symmetrical half bridge LLC resonant mode two-way DC-DC converter carries out forward power and becomes when sending; The annexation of switching network is following: the V5 switching tube of inverse parallel VD5 fast recovery diode is connected with the V6 switching tube of inverse parallel VD6 fast recovery diode, and is parallelly connected with the C11 dc filter capacitor then;
Said symmetrical half bridge LLC resonant mode two-way DC-DC converter carries out forward power and becomes when sending; The annexation of resonant network is following: VD13 diode series connection VD14 diode; VD9 diode series connection VD10 diode; C1 split resonant capacitance series connection C2 split resonant capacitance; Above-mentioned three is connected in parallel between the negative pole (S1-) of positive pole (S1+) and the 1st dc bus of the 1st dc bus, the common node of a termination VD9 diode, VD10 diode, C1 split resonant capacitance and the C2 split resonant capacitance of L1 resonant inductance, the common node of its another termination VD13 diode, VD14 diode and the former limit of T high frequency transformer winding one end; The former limit of the T high frequency transformer winding other end connects the common node of V5 switching tube and V6 switching tube;
Said symmetrical half bridge LLC resonant mode two-way DC-DC converter carries out forward power and becomes when sending; The annexation of rectifier-laod network is following: VD7 diode, VD8 diode; VD15 diode and VD16 diode are formed single-phase full bridge rectifier loop, and be parallelly connected with the C12 dc filter capacitor then.
6. V2G bi-directional power conversion electric automobile charge-discharge system according to claim 1; It is characterized in that; Said symmetrical half bridge LLC resonant mode two-way DC-DC converter carries out forward power and becomes when sending, and VD13 diode and the series connection of VD14 diode provide overvoltage protection for the L1 resonant inductance; VD15 diode and VD16 diode are a rectifier arm of single-phase full bridge rectifier, and bypass L2 resonant inductance;
Said symmetrical half bridge LLC resonant mode two-way DC-DC converter carries out reverse power and becomes when sending, and VD15 diode and the series connection of VD16 diode provide overvoltage protection for the L2 resonant inductance; VD13 diode and VD14 diode are a rectifier arm of single-phase full bridge rectifier, and bypass L1 resonant inductance.
7. V2G bi-directional power conversion electric automobile charge-discharge system according to claim 1; It is characterized in that; Said symmetrical half bridge LLC resonant mode two-way DC-DC converter carries out forward power and becomes when sending, and VD9 diode and the series connection of VD10 diode provide overvoltage protection for C1 split resonant capacitance and C2 split resonant capacitance; VD11 diode and VD12 diode suppress the LC resonance that single-phase full bridge rectifier loop occurs;
Said symmetrical half bridge LLC resonant mode two-way DC-DC converter carries out reverse power and becomes when sending, and VD11 diode and the series connection of VD12 diode provide overvoltage protection for C3 split resonant capacitance and C4 split resonant capacitance; VD9 diode and VD10 diode suppress the LC resonance that single-phase full bridge rectifier loop occurs.
8. V2G bi-directional power conversion electric automobile charge-discharge system according to claim 5; It is characterized in that; Said C1 split resonant capacitance is connected with C2 split resonant capacitance and is constituted the split resonant capacitance and open up the benefit structure; The rms current of C1 split resonant capacitance and C2 split resonant capacitance is the half the of single resonant capacitance, and its capacitance is the half the of single resonant capacitance;
Said C3 split resonant capacitance is connected with C4 split resonant capacitance and is constituted the split resonant capacitance and open up the benefit structure, and the rms current of C3 split resonant capacitance and C4 split resonant capacitance is the half the of single resonant capacitance, and its capacitance is half of single resonant capacitance.
9.V2G the control method of bi-directional power conversion electric automobile charge-discharge system is characterized in that, comprises the control method of single-phase V2G bi-directional power conversion electric automobile charge-discharge system and the control method of three-phase V2G bi-directional power conversion electric automobile charge-discharge system;
The control method of single-phase V2G bi-directional power conversion electric automobile charge-discharge system may further comprise the steps:
1) presses signal from single phase alternating current power supply (U) live wire power getting; Voltage signal is followed the tracks of through phase-locked loop (1) synchronously; Obtain the phase angle signal θ of actual voltage signal; Phase angle signal θ is delivered to space vector phase calculation module (2) calculate, obtain the numerical value of sin θ and the numerical value of cos θ, the numerical value of sin θ and the numerical value of cos θ are delivered to α β/dq converter (4) and dq/ α β converter (11) respectively;
2) flow signal through i from single phase alternating current power supply (U) live wire power getting α-i βSignal generating circuit (3) and α β/dq converter (4) obtains the d-axis signal component i under the dq synchronous rotating frame dWith friendship axis signal component i q, the given signal of q shaft current
Figure FDA0000131806310000051
And i qAfter first adder (6) computing, form error signal, this error signal obtains the given signal of q shaft voltage through first pi regulator (8)
Figure FDA0000131806310000052
Will
Figure FDA0000131806310000053
Be input in the dq/ α β converter (11);
3) the first dc voltage and current acquisition module (12) is gathered the 1st DC bus-bar voltage u Dc1, the first dc voltage and current acquisition module (12) plays the effect of electrical isolation and transformation of coefficient, u Dc1With the 1st DC bus-bar voltage set-point
Figure FDA0000131806310000054
Form error signal through the 3rd adder (14), error signal is inputed in the voltage regulator (13), after voltage regulator (13) ratio, integral operation, obtain the given signal of d shaft current i dWith
Figure FDA0000131806310000056
Through forming error signal after second adder (7) computing, this error signal obtains the given signal of d shaft voltage after second pi regulator (9) ratio, integral operation Dq/ α β converter (11) is with the given signal of d shaft voltage under the synchronous rotating frame
Figure FDA0000131806310000058
With the given signal of q shaft voltage
Figure FDA0000131806310000059
Be transformed under the α β two phase rest frames
Figure FDA00001318063100000510
Signal with Signal;
4) α β/abc converter (10) is
Figure FDA00001318063100000514
signal under the abc three phase static coordinate system,
Figure FDA00001318063100000515
signal and
Figure FDA00001318063100000516
signal with
Figure FDA00001318063100000512
signal under the α β two phase rest frames with
Figure FDA00001318063100000513
signal transformation further, obtains four road PWM modulation signals through pwm signal generation module (5) again;
5) the first dc voltage and current acquisition module (12) obtains the operating current signal I on the negative pole bus (S1-) of the 1st dc bus Dc1, I Dc1With the electric current set-point on the negative pole bus (S1-) of the 1st dc bus
Figure FDA0000131806310000061
Through after the 4th adder (15) computing error signal, this error signal obtains the electric current set-point on the negative pole bus (S2-) of the 2nd dc bus after the 3rd pi regulator (16) carries out the adjusting of ratio, integration
Figure FDA0000131806310000062
The negative pole bus (S2-) of the 2nd dc bus is gone up electric current I Dc2With
Figure FDA0000131806310000063
Get error signal through slender acanthopanax musical instruments used in a Buddhist or Taoist mass (17) computing; This error signal is after the 4th pi regulator (18) carries out ratio, integration adjusting; Obtain the control signal on the 2nd dc bus, this control signal is inputed to the reciprocal transformation end of Power Conversion direction controller (21);
6) the 2nd DC bus-bar voltage transducer is connected between the positive electrode bus (S2+) and negative pole bus (S2-) of the 2nd dc bus, is used to detect the positive electrode bus (S2+) of the 2nd dc bus and the voltage between the negative pole bus (S2-); The 2nd dc bus current transducer is connected on the 2nd dc bus negative pole bus (S2-); Be used to detect the electric current of the 2nd dc bus; Above-mentioned electric current and voltage obtain the detection voltage U of the 2nd dc bus after the second dc voltage and current acquisition module (27) carries out electrical isolation and transformation of coefficient Dc2With the detection electric current I on the 2nd dc bus Dc2, U Dc2With the given signal of the 2nd DC bus-bar voltage
Figure FDA0000131806310000064
Try to achieve error signal through the 7th adder (25), this error signal is inputed to the constant voltage mode terminal of mode converter (24), the electric current I on the 2nd dc bus Dc2With the electric current set-point on the 2nd dc bus
Figure FDA0000131806310000065
Try to achieve error signal through the 8th adder (26); This error signal is inputed to the constant current mode terminal of mode converter (24); Mode converter (24) carries out model selection, after the 5th pi regulator (23) carries out ratio, integration adjusting, obtains the electric current set-point on the 1st dc bus
Figure FDA0000131806310000066
With the operating current I on the 1st dc bus Dc1Try to achieve error signal through the 6th adder (22), this error signal is input to the positive-going transition end of Power Conversion direction controller (21);
7) Power Conversion direction controller (21) is confirmed forward and reverse conversion of power; Carry out the conversion of voltage through Voltage-to-frequency Converter (20) again to frequency; After drive signal generation module (19) forms the upper and lower bridge arm complementary signal with 180 ° of duty ratios, finally generate g1 drive signal, g2 drive signal, g3 drive signal and g4 drive signal.
10. the control method of V2G bi-directional power conversion electric automobile charge-discharge system according to claim 9 is characterized in that, the control method of said three-phase V2G bi-directional power conversion electric automobile charge-discharge system may further comprise the steps:
1) from three-phase alternating-current supply A phase (Ua) live wire, three-phase alternating-current supply B phase (Ub) live wire and three-phase alternating-current supply C mutually (Uc) live wire get three-phase voltage signal and three-phase current signal; Realize that through 3/2 converter (31) the three phase static coordinate is tied to the conversion of two phase rest frames, obtains u αSignal, u βSignal, i αSignal and i βSignal, u αSignal and u βSignal obtains θ after phase angle computing module (32) calculates sine function sin θ, cosine function value cos θ deliver to sin θ and cos θ in the dq/ α β converter (11);
2) i αSignal and i βSignal obtains the d-axis signal component i under the dq synchronous rotating frame through α β/dq converter (4) dWith friendship axis signal component i q, the given signal of q shaft current
Figure FDA0000131806310000071
And i qAfter first adder (6) computing, form error signal, this error signal obtains the given signal of q shaft voltage through first pi regulator (8)
Figure FDA0000131806310000072
Will Be input in the dq/ α β converter (11);
3) the first dc voltage and current acquisition module (12) is gathered the 1st DC bus-bar voltage u Dc1, the first dc voltage and current acquisition module (12) plays the effect of electrical isolation and transformation of coefficient, u Dc1With the 1st DC bus-bar voltage set-point
Figure FDA0000131806310000074
Form error signal through the 3rd adder (14), error signal is inputed in the voltage regulator (13), after voltage regulator (13) ratio, integral operation, obtain the given signal of d shaft current
Figure FDA0000131806310000075
i dWith Through forming error signal after second adder (7) computing, this error signal obtains the given signal of d shaft voltage after second pi regulator (9) ratio, integral operation Dq/ α β converter (11) is with the given signal of d shaft voltage under the synchronous rotating frame
Figure FDA0000131806310000082
With the given signal of q shaft voltage
Figure FDA0000131806310000083
Be transformed under the α β two phase rest frames Signal with
Figure FDA0000131806310000085
Signal;
4) α β/abc converter (10) is
Figure FDA0000131806310000088
signal under the abc three phase static coordinate system,
Figure FDA0000131806310000089
signal and
Figure FDA00001318063100000810
signal with
Figure FDA0000131806310000086
signal under the α β two phase rest frames with
Figure FDA0000131806310000087
signal transformation further, obtains six road PWM modulation signals through pwm signal generation module (5) again;
5) the first dc voltage and current acquisition module (12) obtains the operating current signal I on the negative pole bus (S1-) of the 1st dc bus Dc1, I Dc1With the electric current set-point on the negative pole bus (S1-) of the 1st dc bus
Figure FDA00001318063100000811
Through after the 4th adder (15) computing error signal, this error signal obtains the electric current set-point on the negative pole bus (S2-) of the 2nd dc bus after the 3rd pi regulator (16) carries out the adjusting of ratio, integration
Figure FDA00001318063100000812
The negative pole bus (S2-) of the 2nd dc bus is gone up electric current I Dc2With
Figure FDA00001318063100000813
Get error signal through slender acanthopanax musical instruments used in a Buddhist or Taoist mass (17) computing; This error signal is after the 4th pi regulator (18) carries out ratio, integration adjusting; Obtain the control signal on the 2nd dc bus, this control signal is inputed to the reciprocal transformation end of Power Conversion direction controller (21);
6) the 2nd DC bus-bar voltage transducer is connected between the positive electrode bus (S2+) and negative pole bus (S2-) of the 2nd dc bus, is used to detect the positive electrode bus (S2+) of the 2nd dc bus and the voltage between the negative pole bus (S2-); The 2nd dc bus current transducer is connected on the 2nd dc bus negative pole bus (S2-); Be used to detect the electric current of the 2nd dc bus; Above-mentioned electric current and voltage obtain the detection voltage U of the 2nd dc bus after the second dc voltage and current acquisition module (27) carries out electrical isolation and transformation of coefficient Dc2With the detection electric current I on the 2nd dc bus Dc2, U Dc2With the given signal of the 2nd DC bus-bar voltage
Figure FDA0000131806310000091
Try to achieve error signal through the 7th adder (25), this error signal is inputed to the constant voltage mode terminal of mode converter (24), the electric current I on the 2nd dc bus Dc2With the electric current set-point on the 2nd dc bus
Figure FDA0000131806310000092
Try to achieve error signal through the 8th adder (26); This error signal is inputed to the constant current mode terminal of mode converter (24); Mode converter (24) carries out model selection, after the 5th pi regulator (23) carries out ratio, integration adjusting, obtains the electric current set-point on the 1st dc bus
Figure FDA0000131806310000093
With the operating current I on the 1st dc bus Dc1Try to achieve error signal through the 6th adder (22), this error signal is input to the positive-going transition end of Power Conversion direction controller (21);
7) Power Conversion direction controller (21) is confirmed forward and reverse conversion of power; Carry out the conversion of voltage through Voltage-to-frequency Converter (20) again to frequency; After drive signal generation module (19) forms the upper and lower bridge arm complementary signal with 180 ° of duty ratios, finally generate g1 drive signal, g2 drive signal, g3 drive signal and g4 drive signal.
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Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102790532A (en) * 2012-07-25 2012-11-21 上海交通大学 Universal switch power supply
CN103475232A (en) * 2013-09-30 2013-12-25 刘闯 High-precision bidirectional converter for electric energy storage and circulation
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DE102022120021B3 (en) 2022-08-09 2023-08-03 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Method and circuit for an integrated DC/DC converter in an AC battery

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6364307B2 (en) * 2014-10-14 2018-07-25 株式会社日立情報通信エンジニアリング Power supply device and uninterruptible power supply system using the same
CN110356268B (en) * 2019-06-25 2021-08-03 华为技术有限公司 Vehicle-mounted charging and discharging device and system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101814766A (en) * 2010-04-06 2010-08-25 中国电力科学研究院 Power supply topology structure of electric automobile bidirectional charger
CN102163856A (en) * 2011-03-01 2011-08-24 东南大学 Vehicle-to-grid (V2G)-technology-based vehicle-mounted charging and discharging device and control method thereof
CN102201739A (en) * 2011-05-27 2011-09-28 华北电力大学（保定） Symmetrical half-bridge LLC resonant bidirectional DC-DC converter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101814766A (en) * 2010-04-06 2010-08-25 中国电力科学研究院 Power supply topology structure of electric automobile bidirectional charger
CN102163856A (en) * 2011-03-01 2011-08-24 东南大学 Vehicle-to-grid (V2G)-technology-based vehicle-mounted charging and discharging device and control method thereof
CN102201739A (en) * 2011-05-27 2011-09-28 华北电力大学（保定） Symmetrical half-bridge LLC resonant bidirectional DC-DC converter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
颜湘武等: "电动汽车传导式充电机关键技术", 《电力电子技术》 *

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CN111525828B (en) * 2020-05-20 2023-03-10 太原理工大学 Control method of bidirectional isolation type resonant power converter based on virtual synchronous motor
CN113726136B (en) * 2020-05-26 2023-11-03 台达电子企业管理（上海）有限公司 conversion device
CN113726136A (en) * 2020-05-26 2021-11-30 台达电子企业管理（上海）有限公司 Conversion device
CN111404393A (en) * 2020-06-08 2020-07-10 北京理工大学深圳汽车研究院 Vehicle-mounted charging circuit and bidirectional direct current conversion circuit
CN112398349A (en) * 2020-10-19 2021-02-23 浙江大学 Alternating current-direct current interconnection isolation type bidirectional DC/AC converter and bidirectional sharing control method thereof
CN112769153A (en) * 2020-12-28 2021-05-07 山东鲁能软件技术有限公司智能电气分公司 High-power-density bidirectional charging and discharging circuit, control method and power supply
CN113131768B (en) * 2021-04-20 2023-07-04 西华大学 Control method of electric automobile seven-in-one high-voltage integrated system
CN113131768A (en) * 2021-04-20 2021-07-16 西华大学 Control method of seven-in-one high-voltage integrated system of electric automobile
CN113410859A (en) * 2021-06-29 2021-09-17 西安特锐德领充新能源科技有限公司 Control method of vehicle-mounted bidirectional charger and vehicle-mounted bidirectional charger
CN113904557A (en) * 2021-09-18 2022-01-07 苏州万可顶钇电源有限公司 Automatic compensation device with high reliability and mutual hot backup of double buses and control method
CN114825407B (en) * 2022-06-22 2022-10-18 锦浪科技股份有限公司 Charging and discharging switching method, device, system and medium of bidirectional converter
CN114825407A (en) * 2022-06-22 2022-07-29 锦浪科技股份有限公司 Charging and discharging switching method, device, system and medium of bidirectional converter
DE102022120021B3 (en) 2022-08-09 2023-08-03 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Method and circuit for an integrated DC/DC converter in an AC battery
CN116505635A (en) * 2023-06-25 2023-07-28 广汽埃安新能源汽车股份有限公司 Power battery charging device and vehicle
CN116505635B (en) * 2023-06-25 2023-11-17 广汽埃安新能源汽车股份有限公司 Power battery charging device and vehicle

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