CN105932755B - Electric car high power DC charger/stake three-phase PFC fairing and control method - Google Patents
Electric car high power DC charger/stake three-phase PFC fairing and control method Download PDFInfo
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- CN105932755B CN105932755B CN201610252171.2A CN201610252171A CN105932755B CN 105932755 B CN105932755 B CN 105932755B CN 201610252171 A CN201610252171 A CN 201610252171A CN 105932755 B CN105932755 B CN 105932755B
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- 238000001514 detection method Methods 0.000 claims description 12
- 230000001939 inductive effect Effects 0.000 claims description 5
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
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Classifications
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- H02J7/022—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/2173—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a biphase or polyphase circuit arrangement
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0012—Control circuits using digital or numerical techniques
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Abstract
The present invention relates to a kind of electric car high power DC charger/stake three-phase PFC fairing and control methods to have power factor emendation function, output voltage grade is controllable and steady-state error is small using three bridge arm topological structure of three-phase.Present apparatus output has Isobarically Control mode and current constant control mode; with voltage, electric current, temperature protection and the IGBT drive circuit for taking electric protection; increase pretrigger/counnter attack in DC output side and fill module, effectively increases the safety and reliability of the present apparatus.The present apparatus and uses SVPWM method using the closed-loop control and the control method combined closely of three-phase digital phaselocked loop of grid voltage orientation, improves that DC voltage utilization rate, to reduce current on line side harmonic content, fast response time and starting current small.The device has the characteristics that net side power factor is high, work efficiency is high for complete machine, side harmonics are few, fast response time, starting current are small, safe and reliable, cannot be only used for electric car high power DC charger/stake, it can also be used to other large power supply occasions.
Description
Technical field
The invention belongs to the three-phase PFC fairing and control method of a kind of electric car high power DC charger/stake,
It is specifically a kind of to be applied to charging batteries of electric automobile, there is High Power Factor, clean and environmental protection, high safety, reliability
High controllable constant-pressure or constant current output device and control method.
Background technique
With the continuous reduction of non-renewable energy resources, the fast development of new energy is pushed to have become the task of top priority, in vapour
In turner industry, electric car comes into being, it is as a kind of green traffic tool that development prospect is wide, spreading speed from now on
Can be abnormal swift and violent, following market prospects are also abnormal huge.And the important auxiliary facility as electric car, electric car
Great attention of the charger/stake increasingly by society and country.
Charging device of electric automobile can totally be divided into vehicle-mounted charging device and off-board charging unit.Vehicle-mounted charging device
Refer to the device to charge using land-based AC power grid and vehicle power supply to battery pack being mounted on electric car, including vehicle-mounted
Charger, vehicle-mounted charge generating set and operation energy regenerating charging unit are straight by an ac power cable with plug
It patches in the charging socket of electric car and charges a battery.Vehicle-mounted charging device is usually using simple structure, convenient control
Contact type charger, be also possible to induction electricity charger.It is designed fully according to the type of Vehicular accumulator cell, specific aim compared with
By force.Off-board charging unit, i.e. ground charging unit, mainly include special charging machine/stake, special charging station, general battery charger/
Stake, public place charging station etc., it can satisfy the various charging modes of various batteries.Off-board charging unit is equivalent to vapour
Vehicle gas station, the electric car that it needs to charge to any one provide charging service.
To Vehicular charger/stake and non-on-board charger/stake, takes electricity to carry out AC/DC rectifying conversion from three phase network, provide
Steady dc voltage source is all very important link, this link is directly related to power quality, power factor (PF), complete machine effect
Rate, calorific value, security and reliability etc..Major part is provided stable using multiple small-power wired in parallel modes currently on the market
DC voltage source has the disadvantage that
1) equipment volume is big.It usually requires to occupy much room using the device of multiple little module parallel connections, in vehicle-mounted charge
It is difficult to apply in machine/stake, and in non-on-board charger/stake, it generally requires to occupy an independent charging room, this is crowded
City in cost of implementation it is high, limit non-on-board charger/stake use scope.
2) transfer efficiency is low.It causes multiple switch device to have thermal losses using multiple small-power wired in parallel modes, drops
Low overall efficiency, meanwhile, it needs to increase other mating cooling measures, further reduced charger/stake efficiency.
3) equipment cost is high, high failure rate.Multiple modules need to increase at multiple equipment cost and matched heat dissipation is set
Standby cost, and have the failure of any one module, it all may result in other modules so that entire charger/stake loses
Ability to work.
High power three-phase PFC fairing and control method there has been significant progress with the progress of electronics technology, but
With the appearance of new energy new equipment, still there are many problems that need to further research and solve, is especially suitable for the big function of electric car
Rate DC charging motor/stake Three phase PFC fairing and control method are badly in need of research and development.
Summary of the invention
The object of the present invention is to provide a kind of output voltage grade is controllable, net side power factor is high, and overall efficiency is high, cost
Low, easy to maintain, small in size, failure rate is low, operational reliability it is high be used for electric car high power DC charger/stake three
Phase PFC fairing and control method, it is above-mentioned to overcome the shortcomings of.
To achieve the goals above, technical solution used by this patent is:
A kind of three-phase PFC fairing of electric car high power DC charger/stake, including PFC rectifier boost are adjusted
Module (100), pretrigger/counnter attack fill module (110), alternating voltage electric current A/D sampling module (120), three-phase digital phaselocked loop
Module (130), three-phase/two-phase converter module (140), the IGBT drive module (150) for taking electric protection, SVPWM operation mould
Block (151), two-phase be dynamic/the quiet inverse transform module of two-phase (152), two-way multiplication module (160), two-way adder Module (170),
Two-way proportional integral operation module (171), three tunnel comparator modules (172) and logic controller module (180).
Three-phase power grid voltage pin output end UA、UB、UCRespectively with inductance LA、LB、LCInput terminal ULA+、ULB+、ULC+, phase
Connection, inductance LA、LB、LCOutput end ULA-、ULB-、ULC-Mould is adjusted by current detecting 1,2,3 and PFC rectifier boost respectively
Block (100) node L1、L2、L3Input terminal is connected, rectification output end Ubus+Module (110) input terminal is filled with pretrigger/counnter attack
Ustart_inIt is connected, pretrigger/counnter attack fills the output end U of module (110)start_outWith Uout+It is connected, Uout+It is examined by electric current
Survey one end U of 4 with output capacitance C and load parallel circuitC+It is connected, PFC rectifier boost adjustment module (100) output end Ubus-
With UOUT-It is connected, UOUT-With one end U of output capacitance C and load parallel circuitC-It is connected.
Detect voltage value eA、eB、eCWith detection current value IA、IB、ICRespectively with alternating voltage electric current A/D sampling module
(120) input terminal I-1, I-2, I-3, I-4, I-5, I-6 is connected, and the output of alternating voltage electric current A/D sampling module (120) is adopted
Sample value eA(k)、eB(k)、eC(k)、IA(k)、IB(k)、IC(k) by output end O-1, O-2, O-3, O-4, O-5, O-6 and three-phase/
Input terminal I-7, I-8, I-9, I-10, I-11, I-12 of two-phase converter module (140) are connected, three-phase/bis- phasing commutator moulds
2 tunnel output valve e of block (140)α(k)、eβ(k) pass through the input of output end O-7, O-8 and three-phase digital phase-locked loop module (130)
I-14, I-15 are connected at end, the output phase place value θ (k) of three-phase digital phase-locked loop module (130) by output end O-13 respectively with
Three-phase/two-phase converter module (140) input terminal I-13 and two-phase be dynamic/the input terminal I_ of the quiet inverse transform module of two-phase (152)
16 are connected；The output valve ω (k) of three-phase digital phase-locked loop module (130) is defeated by output end O-14 and multiplier C (190) one
Enter end to be connected, constant inductance value l is connected with multiplier C (190) another input terminal, and multiplier C (190) output ω l multiplies with two-way
The input terminal I-34 of summer block (160) is connected with I-35；Three-phase/two-phase converter module (140) output valve ed(k)、eq
(k) it is connected respectively with input terminal I-17, I-18 of two-way adder Module (170) by output end O-9, O-10, three-phase/bis-
The output valve I of phasing commutator module (140)d(k) pass through the input terminal I-20 of output end O-11 and three tunnel comparator modules (172)
It is connected with two-way multiplication module (160) input terminal I_36, three-phase/two-phase converter module (140) output valve Iq(k) lead to
Cross the input terminal I-19 and two-way multiplication module (160) input terminal I-33 of output end O-12 and three tunnel comparator modules (172)
It is connected, the input value I of three tunnel comparator modules (172)qref(k) it is connected by input terminal I-21 with reactive current constant,
The input value I of three tunnel comparator modules (172)ref(k) it is connected by input terminal I-22 with watt current constant, current detecting 4
Output valve Iout(k) it is connected with three tunnel comparator module (172) input terminal I-23, the input of three tunnel comparator modules (172)
Value mode is connected by input terminal I-24 with logic controller (180) output end O-32, three tunnel comparator modules (172) it is defeated
Enter value Uref(k) it is connected by input terminal I-25 with output voltage constant, the output valve U of voltage detecting 4out(k) respectively with three
The input terminal I-26 of road comparator module (172) is connected, the output valve Δ e of three tunnel comparator modules (172)id(k)、Δeiq
(k) by output end O-15, O-16 respectively with input terminal I-27, I-28 phase of two-way proportional integral operation module (171)
Connection, the output valve v of two-way proportional integral operation module (171)d(k)、vq(k) passed through by output end O-17 and O-18
Be connected after phase inverter with input terminal I-29, I-30 of two-way adder Module (170), two-way multiplication module (160) it is defeated
Value ω lI outq(k) it is connected by output end O-21 with the input terminal I-32 of two-way adder Module (170), two-way multiplier
The output valve ω lI of module (160)d(k) defeated with two-way adder Module (170) after phase inverter by output end O-22
Enter I_31 is held to be connected, two-way adder Module (170) output valve Uq(k)、Ud(k) pass through output end O-19, O-20 and two-phase
Input terminal I-37, I-38 of dynamic/quiet inverse converter module (152) of two-phase are connected, and/quiet inverse converter the module of two-phase is moved in two-phase
(152) output valve Uα(k)、Uβ(k) pass through input terminal I-39, I-40 of output end O-23, O-24 and SVPWM computing module (151)
It is connected, the output valve S of SVPWM computing module (151)a、Sb、Sc、Pass through output end O-25, O-26, O-27, O-
28, O-29, O-30 are connected with 6 with one end of logical-arithmetic unit respectively, 6 other ends and logic control with logical-arithmetic unit
The output end O-31 of device processed is connected, 6 with the output valve of logical-arithmetic unit respectively with the IGBT drive module that takes electric protection
(151) input terminal I-41, I-42, I-43, I-44, I-45, I-46 is connected.The IGBT drive module for taking electric protection generates
6 tunnel driving signal G1, G2, G3, G4, G5, G6 gate pole with IGBT1, IGBT2, IGBT3, IGBT4, IGBT5, IGBT6 respectively
It is connected, drives the IGBT1~IGBT6 of PFC rectifier boost adjustment module (100)；Temperature detection exports T and logic controller
(180) input terminal I-47 is connected, the detected value U of voltage detecting 4out(k) it is connected with logic controller (180) input terminal I-48
It connects, the detected value I of current detecting 4out(k) it is connected with the input terminal I-49 of logic controller, (180) of logic controller are defeated
Signal J1 fills the input terminal U of module by output end O-33 and pretrigger/counnter attack outJ1Be connected, logic controller (180) it is defeated
Signal J2 is connected by output end O_34 with radiator fan out.
Control method using the three-phase PFC fairing of above-mentioned electric car high power DC charger/stake is:, institute
It states the two-way three-phase in three-phase/two-phase converter module (140)/two-phase converter module (210) and receives alternating voltage electric current
The collection value e of A/D sampling module (120)A(k)、eB(k)、eC(k)、IA(k)、IB(k)、IC(k), after calculating, output is generated
Value eα(k)、eβ(k)、Iα(k)、Iβ(k) be sent to two-way two-phase it is quiet/two-phase moves converter module (220), and by output valve eα(k)、
eβ(k) three-phase digital phase-locked loop module (130) are sent to.Two-way two-phase is quiet/and two-phase moves converter module (220) and receives eα(k)、
eβ(k)、Iα(k)、Iβ(k) and the output phase θ (k) of three-phase digital phase-locked loop module (130), after operation；Pass through output end O-
9, O-10, O-11, O-12 export ed(k)、eq(k)、Id(k)、Iq(k)。
Described three-phase digital phase-locked loop module (130) input terminal I-14, I-15 receive eα(k)、eβ(k) after, through two-phase
Converter module (310) operation is moved in quiet/two-phase, generates output valve It willInput to proportional integration operation mould
Block 1 (320) exports current electric grid voltage-phase θ (k) value, and phase theta (k) value is sent into data cache module (340) all the way, number
According to cache module (340) feedback θ (k-1) return two-phase it is quiet/two-phase move converter module (310), phase theta (k) value is passed through all the way
Module of differentiating (330) exports current electric grid voltage angular frequency (k) value.
Three tunnel comparator module (172) input signal Uref(k)、Iref(k)、Uout(k)、Iout(k) respectively with selection
4 input terminals of switch S (450) are connected, and the control terminal mode of switch S (450) is selected to control input signal Uref(k)、Uout(k)
Or Iref(k)、Iout(k) gating；Select two output ends of switch S (450) respectively with comparator 1 (410)+it is positive and-
Cathode is connected, the output e of comparator 1 (410)u(k) proportional integration computing module 2 (440) are connected, exports Idref(k) compared with
Device 2 (420)+anode be connected, comparator 2 (420)-cathode and input Id(k) it is connected, comparator 2 (420) generates output letter
Number Δ eid(k)；Comparator 3 (430)+positive and input Iqref(k) be connected, comparator 3 (430)-cathode and input Iq
(k) it is connected, comparator 3 (430) generates output signal Δ eiq(k)。
The logic controller (180) can independently monitor in real time the PFC fairing output voltage, output electric current and
The temperature of present apparatus can alone set logical signal k when over-voltage, under-voltage, overcurrent, excess temperature occurs in whole device operation
It is low, 6 tunnel driving signals are latched in low level, turn off IGBT1~IGBT6；The mode of logic controller (180) can according to
The operating status that the demand at family automatically switches the PFC fairing is in Isobarically Control mode or current constant control mode；Logic
J1 control pretrigger/counnter attack of controller (180) fills the state of the normal open switch of the relay J1 of module (110), and cooperation is opened in advance
Dynamic process；The J2 of logic controller (180) controls starting and stopping for radiator fan according to the temperature of present apparatus.
The pretrigger/counnter attack fills module (110) input terminal Ustart_inIt is connected with the anode of diode D, diode D's
Cathode is connected with one end of resistance R and relay J1 parallel circuit, the other end of resistance R and relay J1 parallel circuit and pre-
Starting/counnter attack fills the output end U of module (110)start_outIt is connected, electromagnetic coil and pretrigger/counnter attack of relay J1 fills mould
The port U of block (110)J1It is connected；Pretrigger/counnter attack, which fills module, can effectively inhibit inrush current, when output capacitance C's
When voltage class is not up to setting value, logic controller (180) controls relay J1 normal open switch and disconnects, and pretrigger electric current passes through
Diode D charges using resistance R to output capacitance C；After the voltage class of output capacitance C reaches setting value, logic control
Device (180) controls relay J1 normal open switch closure for resistance R short circuit, forms unilateal conduction channel by diode D, even if due to
Failure cause boost adjustment module some IGBT bridge arm on down tube simultaneously turn on or have a power failure suddenly, diode D also can and
When prevent output capacitance C by IGBT short circuit, occur current flowing backwards, protection IGBT so that whole equipment safety.
The control method of described device are as follows: relay J1 normal open switch disconnects before the device starts, logic controller k output
Signal keep low level turn off IGBT1~IGBT6, PFC rectifier boost adjustment module (100) by 6 diode D1, D2, D3,
D4, D5, D6 carry out uncontrollable rectifier, and pretrigger electric current is pre-charged output capacitance C by resistance R；When the electricity of output capacitance C
After pressure grade reaches setting value, relay J1 normal open switch closure, the normal open switch closure composition list of diode D and relay J1
To conductive channel, load end power supply is continued as；
At the same time, alternating voltage electric current A/D sampling module (120) acquisition exchange side voltage value and current value, are conveyed to
Three-phase/two-phase converter module (140).Network voltage electromotive force e under three-phase/two-phase converter module (140) coordinates computed systemα
(k)、eβ(k) and AC current values Iα(k)、Iβ(k), three-phase digital phase-locked loop module (130) is according to eα(k) and eβ(k) it calculates and works as
The phase theta (k) and angular frequency (k) of preceding network voltage, and phase theta (k) input three-phase/two-phase converter module (140) is counted
Calculate network voltage electromotive force e under kinetic coordinate systemd(k)、eq(k) and AC current values Id(k)、Iq(k).Logic controller (180)
Three tunnel comparator modules (172), which are controlled, according to user demand operates in Isobarically Control mode or current constant control mode.
Under Isobarically Control mode, logic controller (180) controls three tunnel comparator modules (172) by mode signal,
Switch S (450) are selected to control input signal Uref(k)、Uout(k) comparator 1 (410) are sent into, Uref(k) and Uout(k) it makes comparisons,
eu(k) proportional integration computing module 2 (440), calculating current inner ring active component target value I are inputed todref(k), Idref(k) with
Id(k) it is made comparisons by comparator 2 (420) and calculates Δ eid(k), current inner loop reactive component Iqref(k) and Iq(k) by comparing
Device 3 (430), which is made comparisons, calculates Δ eiq(k)；Δeid(k) and Δ eiq(k) it is calculated by two-way proportional integral operation module (171)
Inductive drop target value vd(k) and vq(k), vd(k) and vq(k) two-way adder Module (170) are sent into after symbol negates, two-way
Multiplication module (160) calculates current decoupling component ω lIq(k) and ω lId(k), ω lIq(k) with the negated ω lI of symbold
(k) enter two-way adder Module (170) together, two-way adder Module (170) is calculated according to the input quantity in this control period
This period PFC rectifier boost adjustment module (100) bridge arm side voltage DC amount U outd(k) and Uq(k) ,/quiet inversion of two-phase is moved in two-phase
Parallel operation module (152) utilizes the output phase θ (k) of three-phase digital phase-locked loop module (130) by Ud(k) and Uq(k) it is reduced to static
Voltage value U under coordinate systemα(k) and Uβ(k)。
Under current constant control mode, logic controller controls three tunnel comparator modules by mode signal, selects switch S
(450) input signal I is controlledref(k)、Iout(k) comparator 1 (410) are sent into, Iref(k) and Iout(k) it makes comparisons, eu(k) it inputs
To proportional integration computing module 2 (440), current inner loop active component target value I is obtaineddref(k), Idref(k) and Id(k) pass through
Comparator 2 (420), which is made comparisons, calculates Δ eid(k), current inner loop reactive component Iqref(k) and Iq(k) pass through comparator 3 (430)
It makes comparisons and calculates Δ eiq(k)；Δeid(k) and Δ eiq(k) inductive drop is calculated by two-way proportional integral operation module (171)
Target value vd(k) and vq(k), vd(k) and vq(k) enter two-way adder Module (170) after symbol negates, two-way multiplier mould
Block (160) calculates current decoupling component ω lIq(k) and ω lId(k), ω lIq(k) with the negated ω lI of symbold(k) it one goes forward side by side
Enter two-way adder Module (170), two-way adder Module (170) calculates this period according to the input quantity in this control period
PFC rectifier boost adjustment module (100) bridge arm side voltage DC amount Ud(k) and Uq(k) ,/quiet inverse converter module of two-phase is moved in two-phase
(152) utilize the output phase θ (k) of three-phase digital phase-locked loop module (130) by Ud(k) and Uq(k) it is reduced under rest frame
Voltage value Uα(k) and Uβ(k)。
Uα(k) and Uβ(k) 6 road drive level signals are exported by SVPWM computing module (151), and passes through 6 and logic
Door and logic controller k signal progress and logical operation, when the voltage class of output capacitance C reach setting value and without over-voltage,
When under-voltage, overcurrent and excess temperature, it is high level, six road drive level signal S that logic controller (180), which controls k,a、Sb、
Sc、The normal IGBT drive module (150) for being sent into electric protection on forward (FWD), and generate the driving PFC rectification of normal 6 tunnel driving signal
IGBT1~IGBT6 of boosting adjustment module (100) is opened or is turned off, and whole device works normally；When the electricity of output capacitance C
When pressure grade is not up to setting value or over-voltage, under-voltage, overcurrent and excess temperature failure occurs, k is instantaneously set low electricity by logic controller
It is flat, six road drive level signal Sa、Sb、Sc、By all being set low with logical operation, the IGBT for taking electric protection is driven
Dynamic model block exports 6 tunnel negative pressure driving signals at once, turns off the IGBT1~IGBT6 of PFC rectifier boost adjustment module (100), entirely
Device stops working；When equipment, which completes charging work, to be needed to stop, it is low level, shutdown that logic controller (180), which controls k,
IGBT1~IGBT6 of PFC rectifier boost adjustment module (100), whole device stop working.
The invention avoids traditional to carry out boosting rectification using multiple small-power wired in parallel to give electric car big function
Rate DC charging motor/stake provides the mode of stabilized power source, due to only with a set of high power three-phase PFC boost fairing, equipment
Compact is flexible, keeps user easy to assembly, and structure of modification also becomes extremely to facilitate, is practical；Using multiple protective mechanism, make this
Device can safe and stable operation by external disturbance；Using pretrigger/counnter attack filling device, make equipment more secure and reliable；
The control method combined closely using the closed-loop control and three-phase digital phaselocked loop of grid voltage orientation, improve net side power because
Several and transient response speed reduces current on line side harmonic content.
The present invention is suitable for electric car high power DC charger/stake three-phase PFC fairing, it is capable of providing surely
Fixed DC power supply, and have that net side power factor is high, overall efficiency is high, equipment volume is small, at low cost, high reliablity, maintenance
It is simple to wait many advantages.The microcontroller (MCU) of logic controller can be DSP family chip, PIC family chip, can also be
Various other singlechip control chips should all be incorporated in the rights protection scope of this patent.
Detailed description of the invention
Fig. 1 is the principle of the present invention block diagram.
Fig. 2 is three-phase of the present invention/two-phase converter module (140) functional block diagram.
Fig. 3 is the functional block diagram of three-phase digital phase-locked loop module (130) of the present invention.
Fig. 4 is the functional block diagram of three tunnel comparator modules (172) of the invention.
Fig. 5 is control method flow chart of the invention.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and embodiments, but the embodiment should not be construed as to this hair
Bright limitation.
For main structure of the present invention as shown in Figure 1, using modularity control structure, load outputs voltage class is controllable, dress
Setting main structure includes PFC rectifier boost adjustment module (100), pretrigger/counnter attack filling module (110), alternating voltage electric current A/D
Sampling module (120), three-phase digital phase-locked loop module (130), three-phase/two-phase converter module (140) take electric protection
/ the quiet inverse converter module (152) of two-phase, two-way multiplication are moved in IGBT drive module (150), SVPWM computing module (151), two-phase
Device module (160), two-way adder Module (170), two-way proportional integral operation module (171), three tunnel comparator modules (172)
With logic controller module (180).
In the present embodiment, the device output power is up to 66kW, three-phase alternating voltage 380V, frequency 50HZ, constant pressure control
Load voltage U under molding formulaout(k) controllable for 500V~750V, DC current mean value I is exported under current constant control modeout(k) it is
1~120A is controllable, three pole reactor LA、LB、LCValue 0.8mH, pretrigger resistance R take the big resistance of 2k Ω/50W aluminum hull, output capacitance
C capacitance is 4000uf.
In the present embodiment, three-phase power grid voltage pin output end UA、UB、UCRespectively with inductance LA、LB、LCInput terminal ULA+、
ULB+、ULC+, be connected, inductance LA、LB、LCOutput end ULA-、ULB-、ULC-It is rectified respectively by current detecting 1,2,3 and PFC
Boost adjustment module (100) node L1、L2、L3Input terminal is connected, rectification output end Ubus+Module is filled with pretrigger/counnter attack
(110) input terminal Ustart_inIt is connected, pretrigger/counnter attack fills the output end U of module (110)start_outWith Uout+It is connected,
Uout+Pass through one end U of current detecting 4 and output capacitance C and load parallel circuitC+It is connected, PFC rectifier boost adjustment module
(100) output end Ubus-With UOUT-It is connected, UOUT-With one end U of output capacitance C and load parallel circuitC-It is connected.
Detect voltage value eA、eB、eCWith detection current value IA、IB、ICRespectively with alternating voltage electric current A/D sampling module
(120) input terminal I-1, I-2, I-3, I-4, I-5, I-6 is connected, and the output of alternating voltage electric current A/D sampling module (120) is adopted
Sample value eA(k)、eB(k)、eC(k)、IA(k)、IB(k)、IC(k) by output end O-1, O-2, O-3, O-4, O-5, O-6 and three-phase/
Input terminal I-7, I-8, I-9, I-10, I-11, I-12 of two-phase converter module (140) are connected, three-phase/bis- phasing commutator moulds
2 tunnel output valve e of block (140)α(k)、eβ(k) pass through the input of output end O-7, O-8 and three-phase digital phase-locked loop module (130)
I-14, I-15 are connected at end, the output phase place value θ (k) of three-phase digital phase-locked loop module (130) by output end O-13 respectively with
Three-phase/two-phase converter module (140) input terminal I-13 and two-phase be dynamic/the input terminal I- of the quiet inverse transform module of two-phase (152)
16 are connected；The output valve ω (k) of three-phase digital phase-locked loop module (130) is defeated by output end O-14 and multiplier C (190) one
Enter end to be connected；
Constant inductance value l is connected with multiplier C (190) another input terminal, and multiplier C (190) exports ω l and two-way multiplication
The input terminal I-34 of device module (160) is connected with I-35, and in this example, ω l is constant 0.2512；Three-phase/bis- phasing commutators
The output valve e of module (140)d(k)、eq(k) pass through output end O_9, O_10 input with two-way adder Module (170) respectively
I-17, I-18 are connected at end, three-phase/two-phase converter module (140) output valve Id(k) pass through output end O-11 and three roads ratio
Input terminal I_20 compared with device module (172) is connected with two-way multiplication module (160) input terminal I-36, three-phase/bis- phase inversions
The output valve I of device module (140)q(k) pass through the input terminal I-19 and two-way of output end O-12 and three tunnel comparator modules (172)
Multiplication module (160) input terminal I-33 is connected, the input value I of three tunnel comparator modules (172)qref(k) pass through input terminal
I-21 is connected with reactive current constant, in this example, reactive current constant value 0；The input of three tunnel comparator modules (172)
Value Iref(k) it is connected by input terminal I-22 with watt current constant, in this example, watt current constant value 90；Electric current inspection
Survey 4 output valve Iout(k) it is connected with three tunnel comparator module (172) input terminal I-23, three tunnel comparator modules (172)
Input value mode is connected by input terminal I-24 with logic controller (180) output end O-32, three tunnel comparator modules (172)
Input value Uref(k) it is connected by input terminal I-25 with output voltage constant, the output valve U of voltage detecting 4out(k) respectively
It is connected with the input terminal I-26 of three tunnel comparator modules (172), the output valve Δ e of three tunnel comparator modules (172)id(k)、Δ
eiq(k) pass through output end O-15, O-16 input terminal I-27, I-28 with two-way proportional integral operation module (171) respectively
It is connected, the output valve v of two-way proportional integral operation module (171)d(k)、vq(k) it is passed through by output end O-17 and O-18
It is connected after crossing phase inverter with input terminal I-29, I-30 of two-way adder Module (170), two-way multiplication module (160)
Output valve ω lIq(k) it is connected by output end O-21 with the input terminal I-32 of two-way adder Module (170), two-way multiplication
The output valve ω lI of device module (160)d(k) by output end O-22 after phase inverter with two-way adder Module (170)
Input terminal I-31 is connected, two-way adder Module (170) output valve Uq(k)、Ud(k) pass through output end O-19, O-20 and two-phase
Input terminal I-37, I-38 of dynamic/quiet inverse converter module (152) of two-phase are connected, and/quiet inverse converter the module of two-phase is moved in two-phase
(152) output valve Uα(k)、Uβ(k) pass through input terminal I-39, I-40 of output end O-23, O_24 and SVPWM computing module (151)
It is connected, the output valve S of SVPWM computing module (151)a、Sb、Sc、Pass through output end O-25, O-26, O-27, O-
28, O-29, O-30 are connected with 6 with one end of logical-arithmetic unit respectively, 6 other ends and logic control with logical-arithmetic unit
The output end O-31 of device processed is connected, 6 with the output valve of logical-arithmetic unit respectively with the IGBT drive module that takes electric protection
(151) input terminal I-41, I-42, I-43, I-44, I-45, I-46 is connected.The IGBT drive module for taking electric protection generates
6 tunnel driving signal G1, G2, G3, G4, G5, G6 gate pole with IGBT1, IGBT2, IGBT3, IGBT4, IGBT5, IGBT6 respectively
It is connected, drives 6 IGBT1~IGBT6 of PFC rectifier boost adjustment module (100)；Temperature detection exports T and logic control
Device (180) input terminal I-47 is connected, the detected value U of voltage detecting 4out(k) with logic controller (180) input terminal I-48 phase
Connection, the detected value I of current detecting 4out(k) it is connected with the input terminal I-49 of logic controller, (180) of logic controller
Output signal J1 fills the input terminal U of module by output end O-33 and pretrigger/counnter attackJ1It is connected, logic controller (180)
Output signal J2 is connected by output end O-34 with radiator fan.
In the present embodiment, as shown in Fig. 2, two-way three-phase/bis- phasing commutators in three-phase/two-phase converter module (140)
Module (210) receives the collection value e of alternating voltage electric current A/D sampling module (120)A(k)、eB(k)、eC(k)、IA(k)、IB
(k)、IC(k), output valve e is generated after calculatingα(k)、eβ(k)、Iα(k)、Iβ(k)；
Be sent to two-way two-phase it is quiet/two-phase moves converter module (220), and by output valve eα(k)、eβ(k) it is sent to three-phase digital
Phase-locked loop module (130).Two-way two-phase is quiet/and two-phase moves converter module (220) and receives eα(k)、eβ(k)、Iα(k)、Iβ(k)
With the output phase θ (k) of three-phase digital phase-locked loop module (130), after operation；Pass through output end O-9, O-10, O-11, O-12
Export ed(k)、eq(k)、Id(k)、Iq(k)。
In the present embodiment, as shown in figure 3, three-phase digital phase-locked loop module (130) input terminal I-14, I-15 receives eα
(k)、eβ(k) after, through two-phase it is quiet/two-phase move converter module (310) operation, generate output valveIt will
Proportional integration computing module 1 (320) is inputed to, current electric grid voltage-phase θ (k) value is exported, is all the way sent into phase theta (k) value
Data cache module (340), data cache module (340) feed back θ (k-1) return two-phase it is quiet/two-phase move converter module (310),
All the way by phase theta (k) value by module of differentiating (330), current electric grid voltage angular frequency (k) value is exported, in this example,
The output valve ω (k) of three-phase digital phase-locked loop module (130) is constant 314rad/s.
In the present embodiment, as shown in figure 4, three tunnel comparator module (172) input signal Uref(k)、Iref(k)、Uout(k)、
Iout(k) it is connected respectively with 4 input terminals of selection switch S (450), the control terminal mode of switch S (450) is selected to control input
Signal Uref(k)、Uout(k) or Iref(k)、Iout(k) gating；Select switch S (450) two output ends respectively with comparator
1 (410)+anode is connected with-cathode, the output e of comparator 1 (410)u(k) proportional integration computing module 2 (440) are connected,
Export Idref(k) with comparator 2 (420)+anode be connected, comparator 2 (420)-cathode with input Id(k) it is connected, comparator
2 (420) generate output signal Δ eid(k)；Comparator 3 (430)+positive and input Iqref(k) it is connected, comparator 3 (430)
- cathode and input Iq(k) it is connected, comparator 3 (430) generates output signal Δ eiq(k)。
In the present embodiment, logic controller (180) can independently monitor the output voltage, defeated of the PFC fairing in real time
The temperature of electric current and present apparatus out is more than 750V or electric lower than 500V, output when output voltage occurs in whole device operation
When stream is more than 60 DEG C more than 150A, device running temperature, logic controller (180) can alone be set low logical signal k, by 6
Road driving signal is latched in low level, turns off IGBT1~IGBT6；The mode of logic controller (180) can be according to the need of user
Seeking the operating status for automatically switching the PFC fairing is in Isobarically Control mode or current constant control mode, when operating in perseverance
When pressing control model, mode is set to high level, and when operating in current constant control mode, mode is set to low level；Logic control
J1 control pretrigger/counnter attack of device (180) processed fills the state of the normal open switch of the relay J1 of module (110), cooperates pretrigger
Process, when normal open switch to be closed, J1 is just set to high level by logic controller (180)；The J2 root of logic controller (180)
According to the starting and stopping of the temperature control radiator fan of present apparatus, when device running temperature is more than 40 DEG C, logic controller
(180) J2 is just set to high level, opens radiator fan.
In the present embodiment, pretrigger/counnter attack fills module (110) input terminal Ustart_inIt is connected with the anode of diode D, two
The cathode of pole pipe D is connected with one end of resistance R and relay J1 parallel circuit, resistance R and relay J1 parallel circuit it is another
One end and pretrigger/counnter attack fill the output end U of module (110)start_outIt is connected, the electromagnetic coil of relay J1 and pretrigger/
Counnter attack fills the port U of module (110)J1It is connected；Pretrigger/counnter attack, which fills module, can effectively inhibit inrush current, when defeated
When the voltage class of capacitor C is not up to 540V out, J1 is set to low level by logic controller (180), and control relay J1 is normally opened
Switch disconnects, and pretrigger electric current is charged using resistance R to output capacitance C by diode D；When the voltage etc. of output capacitance C
After grade reaches 540V, J1 is set to high level by logic controller (180), and control relay J1 normal open switch closure is short by resistance R
Road forms unilateal conduction channel by diode D, even if leading to some IGBT bridge arm of boosting adjustment module or more due to failure
Pipe simultaneously turns on or has a power failure suddenly, and diode D can also prevent output capacitance C by IGBT short circuit in time, and current flowing backwards occur
Situation protects the safety of IGBT or even whole equipment.
The control method of the present embodiment are as follows: relay J1 normal open switch disconnects before the device starts, logic controller (180)
K output signal keep low level turn off IGBT1~IGBT6, PFC rectifier boost adjustment module (100) by 6 diode D1,
D2, D3, D4, D5, D6 carry out uncontrollable rectifier, and pretrigger electric current is pre-charged output capacitance C by resistance R；When output electricity
After the voltage class of appearance C reaches 540V, relay J1 normal open switch is closed, and the normally opened of relay J1 of diode D and closure opens
Composition unilateal conduction channel is closed, load end power supply is continued as；
At the same time, alternating voltage electric current A/D sampling module (120) acquisition exchange side voltage value and current value, are conveyed to
Three-phase/two-phase converter module (140).Network voltage electromotive force e under three-phase/two-phase converter module (140) coordinates computed systemα
(k)、eβ(k) and AC current values Iα(k)、Iβ(k), three-phase digital phase-locked loop module (130) is according to eα(k) and eβ(k) it calculates and works as
The phase theta (k) and angular frequency (k) of preceding network voltage, and phase theta (k) input three-phase/two-phase converter module (140) is counted
Calculate network voltage electromotive force e under kinetic coordinate systemd(k)、eq(k) and AC current values Id(k)、Iq(k).Logic controller (180)
Three tunnel comparator modules (172), which are controlled, according to user demand operates in Isobarically Control mode or current constant control mode.
When device is in Isobarically Control mode, mode is set to high level, logic controller by logic controller (180)
(180) three tunnel comparator modules (172) are controlled by mode signal, switch S (450) is selected to control input signal Uref(k)、Uout
(k) comparator 1 (410) are sent into, Uref(k) and Uout(k) it makes comparisons, eu(k) proportional integration computing module 2 (440) is inputed to, is counted
Calculate current inner loop active component target value Idref(k), Idref(k) and Id(k) it is made comparisons by comparator 2 (420) and calculates Δ eid
(k), current inner loop reactive component Iqref(k) and Iq(k) it is made comparisons by comparator 3 (430) and calculates Δ eiq(k)；Δeid(k) and
Δeiq(k) inductive drop target value v is calculated by two-way proportional integral operation module (171)d(k) and vq(k), vd(k) and vq
(k) two-way adder Module (170) are sent into after symbol negates, two-way multiplication module (160) calculates current decoupling component ω lIq
(k) and ω lId(k), ω lIq(k) with the negated ω lI of symbold(k) enter two-way adder Module (170) together, two-way adds
Summer block (170) calculates this period PFC rectifier boost adjustment module (100) bridge arm side according to the input quantity in this control period
Voltage DC amount Ud(k) and Uq(k), two-phase it is dynamic/the quiet inverse converter module (152) of two-phase utilizes three-phase digital phase-locked loop module
(130) output phase θ (k) is by Ud(k) and Uq(k) the voltage value U being reduced under rest frameα(k) and Uβ(k)。
When device is in current constant control mode, mode is set to low level by logic controller (180), and logic controller is logical
It crosses mode signal and controls three tunnel comparator modules, switch S (450) is selected to control input signal Iref(k)、Iout(k) it is sent into and compares
Device 1 (410), Iref(k) and Iout(k) it makes comparisons, eu(k) proportional integration computing module 2 (440) is inputed to, current inner loop is obtained
Active component target value Idref(k), Idref(k) and Id(k) it is made comparisons by comparator 2 (420) and calculates Δ eid(k), current inner loop
Reactive component Iqref(k) and Iq(k) it is made comparisons by comparator 3 (430) and calculates Δ eiq(k)；Δeid(k) and Δ eiq(k) pass through
Two-way proportional integral operation module (171) calculates inductive drop target value vd(k) and vq(k), vd(k) and vq(k) after symbol negates
Into two-way adder Module (170), two-way multiplication module (160) calculates current decoupling component ω lIq(k) and ω lId(k),
ωlIq(k) with the negated ω lI of symbold(k) enter two-way adder Module (170) together, two-way adder Module (170)
This period PFC rectifier boost adjustment module (100) bridge arm side voltage DC amount U is calculated according to the input quantity in this control periodd
(k) and Uq(k), two-phase it is dynamic/the quiet inverse converter module (152) of two-phase utilizes the output phase of three-phase digital phase-locked loop module (130)
Position θ (k) is by Ud(k) and Uq(k) the voltage value U being reduced under rest frameα(k) and Uβ(k)。
Uα(k) and Uβ(k) 6 road drive level signals are exported by SVPWM computing module (151), and passes through 6 and logic
The k signal of door and logic controller carries out and logical operation, when the voltage range of load end is within 500V to 750V, output electricity
When stream is no more than 150A and device running temperature lower than 60 DEG C, it is high level, six tunnels driving electricity that logic controller (180), which controls k,
Ordinary mail Sa、Sb、Sc、The normal IGBT drive module (150) for being sent into electric protection on forward (FWD), and generate normal 6 tunnel
IGBT1~IGBT6 of driving signal driving PFC rectifier boost adjustment module (100) is opened or is turned off, the normal work of whole device
Make；When the voltage class of output capacitance C is not up to 540V or voltage that load end occur is more than 750V or lower than 500V, defeated
When electric current is more than that 150A, device running temperature are more than 60 DEG C out, k is instantaneously set low level, six road drive levels by logic controller
Signal Sa、Sb、Sc、By all being set low with logical operation, the IGBT drive module for taking electric protection exports 6 at once
Road negative pressure driving signal, turns off the IGBT1~IGBT6 of PFC rectifier boost adjustment module (100), and whole device stops working；When
When equipment completion charging work needs to stop, it is low level that logic controller (180), which controls k, and shutdown PFC rectifier boost adjusts mould
IGBT1~IGBT6 of block (100), whole device stop working.
The electric car high power DC charger/stake three-phase PFC fairing specific rate-determining steps (Fig. 5) packet
It includes:
Step S100, electric car high power DC charger/stake modules are initialized；
Step S110, relay J1 normal open switch disconnect, and logic controller (180) k exports low level, PFC rectifier boost
Adjustment module (100) uncontrollable rectifier, soft start electric current are pre-charged output capacitance C by resistance R；
Step S120, logic controller (180) judges whether load terminal voltage reaches 540V, when reaching 540V, logic
J1 is set high level by controller (180)；As not up to 540V, J1 is set low level by logic controller (180), is gone to step
S110；
Step S130, relay J1 normal open switch closure, and unilateal conduction channel is formed with diode D；
Step S140, alternating voltage electric current A/D sampling module (120) acquisition exchange side voltage value and current value, two-way three
Phase/two-phase converter module (140) calculates network voltage e under two phase coordinate systems simultaneouslyα(k)、eβ(k) and AC current values Iα
(k)、Iβ(k)；
Step S150, three-phase digital phaselocked loop (130) is according to eα(k)、eβ(k) calculate current electric grid voltage phase theta (k),
With angular frequency (k)；
Step S160, two-way two-phase is quiet/and two-phase moves converter module (220) and calculates network voltage e under kinetic coordinate systemd
(k)、eq(k) and power network current Id(k)、Iq(k)；
Step S170, logic controller (180) judge operating mode at this time, in Isobarically Control mode, logic control
K is changed into high level by device (180), goes to step S200；In current constant control mode, k is changed by logic controller (180)
Low level goes to step S300；
Isobarically Control mode is as follows:
Step S210, three tunnel comparator modules (172) are according to Uref(k)、Uout(k)、Id(k)、Iq(k) and Iqref(k), it counts
Calculate difference DELTA eid(k) and Δ eiq(k)；
Step S220, two-way proportional integral operation module (171) is according to Δ eid(k) and Δ eiq(k) current inductance electricity is calculated
Press regulated value vd(k) and vq(k), two-way adder Module (170) and after phase inverter are sent into；Two-way multiplication module (160)
Computation decoupling constant ω lIq(k) and ω lId(k), and by ω lIq(k) and reverse phase after ω lId(k) it is sent into two-way adder mould
Block (170)；
Step S230, two-way adder Module (170) calculate the modulated signal U under current two-phase stationary motion coordinate systemq
(k) and Ud(k)；
Step S240, two-phase is dynamic/and the quiet inverse converter module (152) of two-phase calculates the modulated signal under two-phase rest frame
Uα(k) and Uβ(k)；
Step S250, SVPWM module (151) calculates current 6 groups of logical drive signals Sa、Sb、Sc、
Step S260, logic controller (180) will protect signal k to set high level, take the IGBT drive module of electric protection
(150) by Sa、Sb、Sc、It is changed into standard drive pulses signal driving IGBT1~IGBT6, carries out Isobarically Control mould
Formula work, goes to step S400；
Current constant control mode is as follows:
Step S310, three tunnel comparator modules (172) are according to Iref(k)、Iout(k)、Id(k)、Iq(k) and Iqref(k), it counts
Calculate difference DELTA eid(k) and Δ eiq(k)；
Step S320, two-way proportional integral operation module (171) is according to Δ eid(k) and Δ eiq(k) current inductance electricity is calculated
Press regulated value vd(k) and vq(k), two-way adder Module (170) and after phase inverter are sent into；Two-way multiplication module (160)
Computation decoupling constant ω lIq(k) and ω lId(k), and by ω lIq(k) and reverse phase after ω lId(k) it is sent into two-way adder mould
Block (170)；
Step S330, two-way adder Module (170) calculate the modulated signal U under current two-phase stationary motion coordinate systemq
(k) and Ud(k)；
Step S340, two-phase is dynamic/and the quiet inverse converter module (152) of two-phase calculates the modulated signal under two-phase rest frame
Uα(k) and Uβ(k)；
Step S350, SVPWM module (151) calculates current 6 groups of logical drive signals Sa、Sb、Sc、
Step S360, logic controller (180) will protect signal k to set high level, take the IGBT drive module of electric protection
(150) by Sa、Sb、Sc、It is changed into standard drive pulses signal driving IGBT1~IGBT6, carries out current constant control
Mode work, goes to step S400；
Step S400, logic controller (180) judge whether power cut-off, when needing device to work on, go to step
S130；
K is set low level by step S410, logic controller (180)；
Step S420, rectifier boost work terminate.
Finally it should be noted that the embodiment of the present invention is merely to illustrate patent formula rather than limits.All do not depart from this patent
The modification and replacement of the spirit and scope of technical solution, should all be incorporated in the scope of the claims of this patent.
The content being not described in detail in patent specification belongs to the prior art well known to this professional domain technical staff.
Claims (7)
1. a kind of electric car high power DC charger/stake three-phase PFC fairing, including PFC rectifier boost adjustment module
(100), pretrigger/counnter attack fills module (110), alternating voltage electric current A/D sampling module (120), three-phase digital phase-locked loop module
(130), three-phase/two-phase converter module (140), the IGBT drive module (150) for taking electric protection, SVPWM computing module
(151), two-phase is dynamic/the quiet inverse transform module of two-phase (152), two-way multiplication module (160), two-way adder Module (170), double
Road proportional integration computing module (171), three tunnel comparator modules (172) and logic controller module (180), it is characterised in that:
Three-phase power grid voltage pin output end UA、UB、UCRespectively with inductance LA、LB、LCInput terminal ULA+、ULB+、ULC+It is connected,
Inductance LA、LB、LCOutput end ULA-、ULB-、ULC-Pass through current detection module 1,2,3 and PFC rectifier boost adjustment module respectively
(100) node L1、L2、L3Input terminal is connected, PFC rectifier boost adjustment module output end Ubus+Module is filled with pretrigger/counnter attack
(110) input terminal Ustart_inIt is connected, pretrigger/counnter attack fills the output end U of module (110)start_outIt is defeated with fairing forward direction
Outlet Uout+It is connected, fairing forward direction output end Uout+Pass through the electricity in parallel with output capacitance C and load of current detection module 4
One end U on roadC+It is connected, PFC rectifier boost adjustment module (100) output end Ubus-With fairing negative sense output end UOUT-Phase
Connection, fairing negative sense output end UOUT-With one end U of output capacitance C and load parallel circuitC-It is connected；
Detect voltage value eA、eB、eCWith detection current value IA、IB、ICIt is defeated with alternating voltage electric current A/D sampling module (120) respectively
Enter I-1, I-2, I-3, I-4, I-5, I-6 is held to be connected, the output sampled value e of alternating voltage electric current A/D sampling module (120)A
(k)、eB(k)、eC(k)、IA(k)、IB(k)、IC(k) pass through output end O-1, O-2, O-3, O-4, O-5, O-6 and three-phase/bis- phase transformations
Input terminal I-7, I-8, I-9, I-10, I-11, I-12 of parallel operation module (140) are connected, three-phase/two-phase converter module
(140) 2 tunnel output valve eα(k)、eβ(k) pass through the input terminal of output end O_7, O_8 and three-phase digital phase-locked loop module (130)
I-14, I-15 are connected, and the output phase place value θ (k) of three-phase digital phase-locked loop module (130) is by output end O-13 respectively with three
Phase/two-phase converter module (140) input terminal I-13 and two-phase be dynamic/the input terminal I- of the quiet inverse converter module (152) of two-phase
16 are connected；The current electric grid voltage angle rate-adaptive pacemaker value ω (k) of three-phase digital phase-locked loop module (130) passes through output end O-14
It is connected with (190) one input terminal of multiplier C, constant inductance value l is connected with multiplier C (190) another input terminal, multiplier C
(190) output ω l is connected with the input terminal I-34 and I-35 of two-way multiplication module (160)；
Three-phase/two-phase converter module (140) output valve ed(k)、eq(k) added respectively with two-way by output end O-9, O-10
Input terminal I-17, I-18 of summer block (170) are connected, three-phase/two-phase converter module (140) output valve Id(k) lead to
Cross output end O-11 respectively with the input terminal I-20 of three tunnel comparator modules (172) and two-way multiplication module (160) input terminal
I-36 is connected, three-phase/two-phase converter module (140) output valve Iq(k) through output end O-12 respectively compared with three tunnels
The input terminal I-19 of device module (172) is connected with two-way multiplication module (160) input terminal I-33, three tunnel comparator modules
(172) input value Iqref(k) it is connected by input terminal I-21 with reactive current constant, three tunnel comparator modules (172)
Input value Iref(k) it is connected by input terminal I-22 with watt current constant；The output valve I of current detection module 4out(k) with
Three tunnel comparator module (172) input terminal I-23 are connected, and the input terminal mode of three tunnel comparator modules (172) passes through input terminal
I-24 is connected with the scheme control end mode output end O-32 of logic controller (180), three tunnel comparator modules (172) it is defeated
Enter value Uref(k) it is connected by input terminal I-25 with output voltage constant, the output valve U of voltage detection module 4out(k) with three
The input terminal I-26 of road comparator module (172) is connected, the output valve △ e of three tunnel comparator modules (172)id(k)、△eiq
(k) by output end O-15, O-16 respectively with input terminal I-27, I-28 phase of two-way proportional integral operation module (171)
Connection, the output valve v of two-way proportional integral operation module (171)d(k)、vq(k) passed through by output end O-17 and O-18
Be connected after phase inverter with input terminal I-29, I-30 of two-way adder Module (170), two-way multiplication module (160) it is defeated
Value ω lI outq(k) it is connected by output end O-21 with the input terminal I-32 of two-way adder Module (170), two-way multiplier
The output valve ω lI of module (160)d(k) defeated with two-way adder Module (170) after phase inverter by output end O-22
Enter I-31 is held to be connected, two-way adder Module (170) output valve Uq(k)、Ud(k) pass through output end O-19, O-20 and two-phase
Input terminal I-37, I-38 of dynamic/quiet inverse converter module (152) of two-phase are connected, and/quiet inverse converter the module of two-phase is moved in two-phase
(152) output valve Uα(k)、Uβ(k) pass through input terminal I-39, I-40 of output end O-23, O-24 and SVPWM computing module (151)
It is connected, the output valve S of SVPWM computing module (151)a、Sb、Sc、Pass through output end O-25, O-26, O-27, O-
28, O-29, O-30 are connected with 6 with one end of logical-arithmetic unit respectively, 6 other ends and logic control with logical-arithmetic unit
The output end O-31 of device processed is connected, 6 with the output valve of logical-arithmetic unit respectively with the IGBT drive module that takes electric protection
(151) input terminal I-41, I-42, I-43, I-44, I-45, I-46 is connected, and the IGBT drive module for taking electric protection generates
6 tunnel driving signal G1, G2, G3, G4, G5, G6 gate pole with IGBT1, IGBT2, IGBT3, IGBT4, IGBT5, IGBT6 respectively
It is connected, drives 6 IGBT of PFC rectifier boost adjustment module (100)；Temperature detection exports T and logic controller (180) is defeated
Enter I-47 is held to be connected, the detected value U of voltage detection module 4out(k) it is connected with logic controller (180) input terminal I-48,
The detected value I of current detection module 4out(k) it is connected with the input terminal I-49 of logic controller, (180) of logic controller are defeated
Signal J1 fills the input terminal U of module by output end O-33 and pretrigger/counnter attack outJ1Be connected, logic controller (180) it is defeated
Signal J2 is connected by output end O-34 with radiator fan out.
2. electric car high power DC charger as described in claim 1/stake three-phase PFC fairing, it is characterised in that:
Two-way three-phase/two-phase converter module (210) in three-phase/two-phase converter module (140) receives alternating voltage electric current A/D
The collection value e of sampling module (120)A(k)、eB(k)、eC(k)、IA(k)、IB(k)、IC(k), after calculating, output valve is generated
eα(k)、eβ(k)、Iα(k)、Iβ(k) be sent to two-way two-phase it is quiet/two-phase moves converter module (220), and by output valve eα(k)、eβ
(k) it being sent to three-phase digital phase-locked loop module (130), two-way two-phase is quiet/and two-phase moves converter module (220) and receives eα(k)、eβ
(k)、Iα(k)、Iβ(k) and the output phase θ (k) of three-phase digital phase-locked loop module (130), after operation, by output end O-9,
O-10, O-11, O-12 export ed(k)、eq(k)、Id(k)、Iq(k)。
3. electric car high power DC charger as described in claim 1/stake three-phase PFC fairing, it is characterised in that:
Three-phase digital phase-locked loop module (130) input terminal I-14, I-15 receives eα(k)、eβ(k) after, through two-phase it is quiet/the dynamic transformation of two-phase
Device module (310) operation generates output valveIt willProportional integration computing module 1 (320) is inputed to, it is defeated
Phase theta (k) value is sent into data cache module (340) all the way, data cache module by current electric grid voltage-phase θ (k) value out
(340) feedback θ (k-1) return two-phase it is quiet/two-phase move converter module (310), phase theta (k) value is passed through into mould of differentiating all the way
Block (330) exports current electric grid voltage angular frequency (k) value.
4. electric car high power DC charger as described in claim 1/stake three-phase PFC fairing, it is characterised in that:
Three tunnel comparator module (172) input signal Uref(k)、Iref(k)、Uout(k)、Iout(k) respectively with selection switch S (450) 4
A input terminal is connected, and the scheme control end mode of switch S (450) is selected to control input signal Uref(k)、Uout(k) or Iref(k)、
Iout(k) gating；Select two output ends of switch S (450) respectively with comparator 1 (410)+positive and-cathode is connected,
The output e of comparator 1 (410)u(k) proportional integration computing module 2 (440) are connected, the output I of comparator 1 (410)dref(k) with
Comparator 2 (420)+anode be connected, comparator 2 (420)-cathode and input Id(k) it is connected, comparator 2 (420) generates defeated
Signal △ e outid(k)；Comparator 3 (430)+positive and input Iqref(k) be connected, comparator 3 (430)-cathode with it is defeated
Enter Iq(k) it is connected, comparator 3 (430) generates output signal △ eiq(k)。
5. electric car high power DC charger as described in claim 1/stake three-phase PFC fairing, it is characterised in that:
Logic controller (180) independently monitors the output voltage of the PFC fairing in real time, exports the temperature of electric current and present apparatus,
When over-voltage, under-voltage, overcurrent, excess temperature occurs in whole device operation, logical signal k is set low alone, 6 tunnel driving signals are latched
In low level, IGBT1~IGBT6 is turned off；The scheme control end mode of logic controller (180) is cut automatically according to the demand of user
The operating status for changing the PFC fairing is in Isobarically Control mode or current constant control mode；The J1 of logic controller (180)
The state for controlling the normal open switch of pretrigger/counnter attack filling module (110) relay J1, cooperates pre-boot process；Logic control
The J2 of device (180) controls starting and stopping for radiator fan according to the temperature of present apparatus.
6. electric car high power DC charger as described in claim 1/stake three-phase PFC fairing, it is characterised in that:
Pretrigger/counnter attack fills module (110) input terminal Ustart_inIt is connected with the anode of diode D, the cathode and resistance R of diode D
It is connected with one end of relay J1 parallel circuit, the other end and pretrigger/counnter attack of resistance R and relay J1 parallel circuit fill
The output end U of module (110)start_outIt is connected, electromagnetic coil and pretrigger/counnter attack of relay J1 fills the end of module (110)
Mouth UJ1It is connected；Pretrigger/counnter attack, which fills module, can effectively inhibit inrush current, when output capacitance C voltage class not
When reaching setting value, logic controller (180) controls relay J1 normal open switch and disconnects, and pretrigger electric current passes through diode D again
It charges by resistance R to output capacitance C；After the voltage class of output capacitance C reaches setting value, logic controller (180) control
Resistance R short circuit is formed unilateal conduction channel by diode D, even if since failure causes by relay J1 normal open switch closure processed
Down tube simultaneously turns on or has a power failure suddenly on some IGBT bridge arm of PFC rectifier boost adjustment module, and diode D also can be timely
Prevent output capacitance C by IGBT short circuit, there is a situation where current flowing backwards, protect the safety of IGBT or even whole equipment.
7. utilizing electric car high power DC charger/stake three-phase PFC fairing control method described in claim 6
Are as follows: relay J1 normal open switch disconnects before the fairing starts, and logic controller k output signal keeps low level to close 6
A IGBT1~IGBT6, PFC rectifier boost adjustment module (100) are not controlled by 6 diodes D1, D2, D3, D4, D5, D6
Rectification, pretrigger electric current are pre-charged output capacitance C by resistance R；When the voltage class of output capacitance C reaches setting value
Afterwards, relay J1 normal open switch is closed, and the normal open switch of diode D and relay J1 are closed to form unilateal conduction channel, is continued
For load end power supply；
At the same time, alternating voltage electric current A/D sampling module (120) acquisition exchange side voltage value and current value, be conveyed to three-phase/
Two-phase converter module (140), network voltage electromotive force e under three-phase/two-phase converter module (140) coordinates computed systemα(k)、eβ
(k) and AC current values Iα(k)、Iβ(k), three-phase digital phase-locked loop module (130) is according to eα(k) and eβ(k) current electric grid is calculated
The phase theta (k) and angular frequency (k) of voltage, and phase theta (k) input three-phase/two-phase converter module (140) is calculated movement
Network voltage electromotive force e under coordinate systemd(k)、eq(k) and AC current values Id(k)、Iq(k), logic controller (180) according to
Demand control three tunnel comparator module (172) in family operates in Isobarically Control mode or current constant control mode；
Under Isobarically Control mode, logic controller (180) controls three tunnel comparator modules by scheme control end mode signal
(172), selection switch S (450) controls input signal Uref(k)、Uout(k) comparator 1 (410) are sent into, Uref(k) and Uout(k)
It makes comparisons, comparator 1 (410) exports eu(k) proportional integration computing module 2 (440), calculating current inner ring active component are inputed to
Target value Idref(k), Idref(k) and Id(k) it is made comparisons by comparator 2 (420) and calculates △ eid(k), current inner loop reactive component
Iqref(k) and Iq(k) it is made comparisons by comparator 3 (430) and calculates △ eiq(k)；△eid(k) and △ eiq(k) pass through two-way proportional
Integral operation module (171) calculates inductive drop target value vd(k) and vq(k), vd(k) and vq(k) two-way is sent into after symbol negates
Adder Module (170), two-way multiplication module (160) calculate current decoupling component ω lIq(k) and ω lId(k), ω lIq(k)
With the negated ω lI of symbold(k) enter two-way adder Module (170) together, two-way adder Module (170) is according to this control
The input quantity in period processed calculates this period PFC rectifier boost adjustment module (100) bridge arm side voltage DC amount Ud(k) and Uq
(k), two-phase it is dynamic/the quiet inverse converter module (152) of two-phase will using the output phase θ (k) of three-phase digital phase-locked loop module (130)
Ud(k) and Uq(k) the voltage value U being reduced under rest frameα(k) and Uβ(k)；
Under current constant control mode, logic controller controls three tunnel comparator modules, selection by scheme control end mode signal
Switch S (450) controls input signal Iref(k)、Iout(k) comparator 1 (410) are sent into, Iref(k) and Iout(k) it makes comparisons, eu
(k) proportional integration computing module 2 (440), calculating current inner ring active component target value I are inputed todref(k), Idref(k) and Id
(k) it is made comparisons by comparator 2 (420) and calculates △ eid(k), current inner loop reactive component Iqref(k) and Iq(k) pass through comparator
3 (430), which are made comparisons, calculates △ eiq(k)；△eid(k) and △ eiq(k) electricity is calculated by two-way proportional integral operation module (171)
Feel voltage-target vd(k) and vq(k), vd(k) and vq(k) enter two-way adder Module (170) after symbol negates, two-way multiplies
Summer block (160) calculates current decoupling component ω lIq(k) and ω lId(k), ω lIq(k) with the negated ω lI of symbold(k)
Enter two-way adder Module (170) together, two-way adder Module (170) calculates this according to the input quantity in this control period
Period PFC rectifier boost adjustment module (100) bridge arm side voltage DC amount Ud(k) and Uq(k) ,/quiet inverse converter of two-phase is moved in two-phase
Module (152) utilizes the output phase θ (k) of three-phase digital phase-locked loop module (130) by Ud(k) and Uq(k) it is reduced to static coordinate
Voltage value U under systemα(k) and Uβ(k)；
Uα(k) and Uβ(k) by SVPWM computing module (151) export 6 road drive level signals, and by 6 with logic gate and
The k signal of logic controller carries out and logical operation, when the voltage class of output capacitance C reach setting value and without over-voltage, it is under-voltage,
When overcurrent and excess temperature, logic controller (180) control k is set to high level, six road drive level signal Sa、Sb、Sc、
The normal IGBT drive module (150) for being sent into electric protection on forward (FWD), and generate normal 6 tunnel driving signal driving PFC rectifier boost
IGBT1~IGBT6 of adjustment module (100) is opened or is turned off, and whole device works normally；When the voltage etc. of output capacitance C
When grade is not up to setting value or over-voltage, under-voltage, overcurrent and excess temperature failure occurs, k is instantaneously set low electricity by logic controller (180)
It is flat, six road drive level signal Sa、Sb、Sc、By all being set low with logical operation, the IGBT for taking electric protection is driven
Dynamic model block (150) exports 6 tunnel negative pressure driving signals at once, turn off the IGBT1 of PFC rectifier boost adjustment module (100)~
IGBT6, whole device stop working；When equipment, which completes charging work, to be needed to stop, it is low that logic controller (180), which controls k,
Level, turns off the IGBT1~IGBT6 of PFC rectifier boost adjustment module (100), and whole device stops working.
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| US10124680B1 (en) * | 2017-06-28 | 2018-11-13 | Lear Corporation | Methods and systems for pre-charging on-board charger of vehicle |
| CN107742917B (en) * | 2017-09-28 | 2020-04-03 | 武汉理工大学 | Three-phase PFC (Power factor correction) rectifying device with voltage boosting and reducing functions for high-power charging pile of electric automobile and control method |
| DE102018203489B4 (en) * | 2018-03-08 | 2022-05-19 | Vitesco Technologies GmbH | AC charging device for a motor vehicle and method for operating an AC charging device for a motor vehicle |
| CN108736716B (en) * | 2018-06-22 | 2023-11-28 | 武汉理工大学 | Digital current-imitating controller of DC/DC converter and control method thereof |
| CN110661321B (en) * | 2018-06-29 | 2022-03-15 | 比亚迪股份有限公司 | Vehicle-mounted charger of electric vehicle, control method of vehicle-mounted charger and electric vehicle |
| CN112550062B (en) * | 2019-09-25 | 2022-03-18 | 比亚迪股份有限公司 | Cooperative control method and device for energy conversion device, storage medium and vehicle |
| CN111416514B (en) * | 2020-04-17 | 2021-01-26 | 河北汇能欣源电子技术有限公司 | Parallel current-sharing control method for three-phase voltage-reduction PFC circuit |
| CN117060713B (en) * | 2023-10-10 | 2024-01-26 | 成都希望森兰智能制造有限公司 | Aging power factor control method for low-voltage frequency converter |
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