CN207388927U - Electric Transit charging pile major loop topological structure - Google Patents
Electric Transit charging pile major loop topological structure Download PDFInfo
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- CN207388927U CN207388927U CN201721121045.XU CN201721121045U CN207388927U CN 207388927 U CN207388927 U CN 207388927U CN 201721121045 U CN201721121045 U CN 201721121045U CN 207388927 U CN207388927 U CN 207388927U
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- Prior art keywords
- phase
- bridge
- charging pile
- major loop
- topological structure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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Abstract
The utility model discloses a kind of Electric Transit charging pile major loop topological structures, including three-phase bridge PWM rectifier and CDD clamper full-bridge phase-shifted ZVZCS converters, the three-phase bridge PWM rectifier is connected with three phase network, and the alternating current for three phase network to be exported is converted into direct current；The CDD clampers full-bridge phase-shifted ZVZCS converters are connected in parallel on the output terminal of three-phase bridge PWM rectifier.The Electric Transit charging pile major loop of the utility model employs the turn-on consumption and turn-off power loss for by the ZVZCS converters of ZVS and ZCS combinations, significantly reducing IGBT, makes charging pile from underloading to fully loaded, the raising of achievable efficiency.
Description
Technical field
The utility model is related to a kind of charging pile, more particularly to a kind of major loop topology knot of Electric Transit charging pile
Structure.
Background technology
With the high speed development of auto industry, car ownership sharply increases, energy shortage, ring caused by auto industry
Border is polluted and getting worse the problems such as climate warming.Electric vehicle is as new-energy automobile, in energy saving and environmental protection etc.
Aspect has many advantages, such as the unrivaled superiority of orthodox car, such as low energy consumption, low stain, low emission, low noise, high efficiency,
Development of Electric Vehicles has been included in " 12th Five-Year Plan " planning, and Development of EV can efficiently solve energy shortage and environment is dirty
The problems such as dye.
Electric Transit charging pile is the core equipment of Electric Transit charging system, plays and focuses in the application of electric vehicle
The effect wanted.Charger extracts energy from power supply, accumulator is passed in an appropriate manner, so as to establish power supply
Power translation interface between accumulator.Using three-phase alternating-current supply as input power, generally comprise LCR filtering link,
The parts such as AC/DC rectifiers, DC-DC converter.In the application scenario of this high input voltage, big output power, insulated gate is double
Gated transistors (IGBT) are most suitable power semiconductors, and isolation type DC-DC converter topology is most suitable circuit
Topology, converter include hard switching pwm converter, series/parallel controlled resonant converter, double active bridge converters (DAB), shifting
Phase formula full-bridge converter etc..
The main circuit structure and control method of hard switching pwm converter are all relatively simple, magnetic device (isolating transformer,
Output inductor) not only small volume, and design and make and be all easier to, so as to charge as high-power conduction-type ground
Machine technology is most ripe, using most topologys.But there is also the shortcomings of switching frequency is low, noise is big for it.
Series/parallel controlled resonant converter is a kind of load resonant code converter, and primary current is sinusoidal waveform, switching device
Sofe Switch condition can be obtained, it is smaller without output inductor or required filter inductance.On the other hand, controlled resonant converter needs
Using larger resonant inductance, which not only needs to transfer all output powers, but also to handle additional nothing
Work(power, and the grade of reactive power is typically 3 times of output power.Moreover, controlled resonant converter needs use relatively multiple
Miscellaneous frequency modulation control mode.
Double active bridge converters are used primarily in high pressure, high-power, high power density DC-DC converter, have energy
The advantages that amount can not only be boosted with two-way flow, output but also can be depressured, all switching devices can realize ZVS, but also deposit simultaneously
Switching device is excessive, volume of transformer is larger, circulating energy is larger, output current ripple is larger, it is soft to lose at light load using
The shortcomings of Switching Condition.
Phase-shift full bridge ZVS converters take full advantage of the leakage inductance of transformer and the parasitic capacitance of switching device so that open
ZVS conditions can be obtained by closing device, and control method is also relatively simple, so as to be obtained in the application for using power MOSFET device
Obtained certain application.But the topology there is also circulating energy it is larger, at light load ZVS conditions easy to be lost the shortcomings of.
In the high power D C-DC converters for using IGBT, the ZVZCS converters that ZVS and ZCS are combined have been developed
Topology, such topology are very suitable for IGBT applications, can the significantly more efficient turn-on consumption and turn-off power loss for reducing IGBT.
Utility model content
In view of the deficiencies of the prior art, the purpose of this utility model is to provide a kind of using the electronic of ZVZCS converters
Public transport charging pile major loop topological structure.
In order to solve the above-mentioned technical problem, the utility model employs following technical solution：
A kind of Electric Transit charging pile major loop topological structure, including three-phase bridge PWM rectifier, the three-phase bridge
PWM rectifier is connected with three phase network, and the alternating current for three phase network to be exported is converted into direct current；It is characterized in that, also
Including CDD clamper full-bridge phase-shifted ZVZCS converters, the CDD clampers full-bridge phase-shifted ZVZCS converters are connected in parallel on three-phase
The output terminal of bridge-type PWM rectifier.
Wherein, the three-phase bridge PWM rectifier includes six IGBT power switch pipes, each two IGBT power switch
Three parallel branches in series are managed, three outlet lines of three phase network are connected to two IGBT of three parallel branches
Between power switch pipe.
Wherein, the CDD clampers full-bridge phase-shifted ZVZCS converters are made of leading-bridge ZVS and lagging leg ZCS；
The leading-bridge ZVS includes four IGBT power switch pipes and two shunt capacitances, the series connection of each two IGBT power switch pipes
Two parallel branches are formed, two shunt capacitances are connected in parallel on respectively on two IGBT power switch pipes of same branch；It is described stagnant
Bridge arm ZCS is connected to change including coupling inductance, transformer, four rectifier bridge diodes and auxiliary circuit, the coupling inductance afterwards
The input terminal of depressor, two input terminals of transformer are connected in two parallel branches of leading-bridge, transformer
Two leading-out terminals are connected in two parallel branches being made of four rectifier bridge diodes；The auxiliary circuit is by clamping
Position capacitance, two diodes, output inductor and output filter capacitor composition, the clamp capacitor and one of diode
Series connection, the output filter capacitor is in parallel with the series arm that clamp capacitor and one of diode are formed, the output filter
Ripple inductance and another diode are connected between two parallel branches.
Wherein, which further includes bus capacitor, the bus capacitor be connected in parallel on three-phase bridge PWM rectifiers with
Between CDD clamper full-bridge phase-shifted ZVZCS converters.
Wherein, further include lightning-protection system, the lightning-protection system be arranged on three phase network and three-phase bridge PWM rectifiers it
Between.
Wherein, the lightning-protection system includes three switches and three lightning protection devices, and every connection of three phase network has one
A switch and a lightning protection device, the lightning protection device ground connection.
Wherein, it is connected with major loop fuse on every outlet line of the three phase network.
Wherein, it is provided with wave filter between the three phase network and three-phase bridge PWM rectifier.
Wherein, the wave filter is LCR wave filters.
The beneficial effects of the utility model are：
The Electric Transit charging pile major loop of the utility model is employed by the ZVZCS converters of ZVS and ZCS combinations, is had
The turn-on consumption and turn-off power loss of IGBT is reduced to effect, makes charging pile from underloading to fully loaded, the raising of achievable efficiency.
Description of the drawings
Fig. 1 is the circuit diagram of the utility model Electric Transit charging pile major loop.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of Electric Transit charging pile major loop topological structure, including three-phase bridge PWM rectifiers and
CDD clamper full-bridge phase-shifted ZVZCS converters, the three-phase bridge PWM rectifier are connected with three phase network, for by three-phase electricity
The alternating current of net output is converted into direct current；The CDD clampers full-bridge phase-shifted ZVZCS converters are connected in parallel on three-phase bridge PWM
The output terminal of rectifier, the direct current electricity output for the direct current of output to be converted into stable different voltages charge the battery.
The Electric Transit charging pile major loop of the utility model is employed by the ZVZCS converters of ZVS and ZCS combinations, is had
The turn-on consumption and turn-off power loss of IGBT is reduced to effect, makes charging pile from underloading to fully loaded, the raising of achievable efficiency.
In the present embodiment, the three-phase bridge PWM rectifier include six IGBT power switch pipes, be respectively S1, S2,
S3, S4, S5, S6, wherein, S1 and S6 series connection, S3 and S4 series connection, S5 and S2 connect, and form three parallel branches, three phase network
Three outlet lines be connected between two IGBT power switch pipes of three parallel branches.
In the present embodiment, the CDD clampers full-bridge phase-shifted ZVZCS converters are by leading-bridge ZVS and lagging leg
ZCS is formed；The leading-bridge ZVS includes four IGBT power switch pipes and two shunt capacitances, four IGBT power switch
Pipe is S7, S8, S9, S10 respectively, and two shunt capacitances are C2 and C3 respectively, wherein, S7 and S9 series connection, S8 and S10 series connection, structure
Into two parallel branches, C2 is connected in parallel on S7, and C3 is connected in parallel on S9；The lagging leg ZCS includes coupling inductance 08L, transformation
Device 09T, four rectifier bridge diodes and auxiliary circuit, wherein, coupling inductance 08L is connected to the input terminal of transformer 09T, becomes
Two input terminals of depressor 09T are connected in two parallel branches of leading-bridge, two output terminals of transformer 09T
Son be connected in two parallel branches being made of four rectifier bridge diodes (four rectifier bridge diodes be respectively D1,
D2, D3 and D4, D1 and D2 series connection, D3 and D4 series connection, then in parallel)；The auxiliary circuit is by clamp capacitor C4, two two poles
Pipe D5 and D6, output inductor 10L and output filter capacitor C5 compositions, the clamp capacitor C4 connect with D5, the output
Filter capacitor C5 is in parallel with the series arm that clamp capacitor C4 and D5 are formed, and the output inductor 10L and D6 is connected to two
Between a parallel branch.
The auxiliary circuit of above-mentioned converter topology is formed simply, and any auxiliary active switching devices, auxiliary circuit is not required
In capacitance and diode capacity it is also smaller, therefore be not only able to well realize main switching device ZVZCS, and reduce
Circulating energy present in auxiliary circuit, the stress of main switching device is reduced using the circuit, can improve rectifier and exist
Efficiency and reliability during underloading situation.
Meanwhile secondary CDD clamp circuits can also play secondary rectifier bridge diode D1-D4 in peak voltage clamper work
With the backward voltage that rectifier bridge diode is born to be limited in certain scope, reduces the voltage stress and power of diode
Loss.
When S7, S8 are turned on, power supply provides energy to load to transformer 09T armature winding positive charges, meanwhile,
Output terminal clamp capacitor C4 charges；When turning off S7, power supply charges to C2, and C3 passes through primary winding charge.Due to C2
Presence, S7 is zero voltage turn-off, at this time transformer leakage inductance 08L and output inductor 10L series connection, energy is provided jointly, by
So that transformer secondary voltage decrease speed is slower than primary side in the presence of C4, cause potential difference and generate induced electromotive force to act on
08L accelerates the electric discharge of C3, and the condition of offer is opened for the no-voltage of S9；After C4 electric discharges are complete, rectifier diode D1-D4 is complete
Portion turns on afterflow, and primary current has resetted during afterflow, turns off S8 at this time, opens S10, due to leakage inductance 08L both sides electric current not
It can be mutated, so S8 is zero-current switching, S10 is zero current turning-on.
In the present embodiment, above topology structure further includes bus capacitor C1, and it is whole that bus capacitor is connected in parallel on three-phase bridge PWM
It is gone between stream device and CDD clamper full-bridge phase-shifted ZVZCS converters, plays a part of to maintain busbar energy constant.
According to the requirement of IEC61024-1, charging pile system does II type lightning protection of LPZ, that is, needs to consider whole system 45kA's
Relieving capacity, therefore, the present embodiment are provided with lightning-protection system, lightning protection system between three phase network and three-phase bridge PWM rectifier
System includes 01Q1 and three lightning protection device 01F of three switches, and 01Q1 and one, the switch of every connection one of three phase network is anti-
Thunder device 01F, wherein lightning protection device 01F are grounded.
In the present embodiment, major loop fuse 02F is connected on every outlet line of three phase network, for being used as three-phase
Bridge-type PWM rectifier back-up protection is quickly disconnected when failure overcurrent.
In the present embodiment, wave filter, wave filter LCR are provided between three phase network and three-phase bridge PWM rectifier
Wave filter is specifically made of resistance 03R1, capacitance 04C1 and inductance 04L, and LCR wave filters are connected on power grid and three-phase bridge PWM is whole
Between flowing device module, for absorbing high fdrequency component, prevent the switching noise of charging pile system from polluting power grid.
Certainly, the major loop topological structure of the utility model, according to onsite application situation, can select to lightning-protection system and
LCR filtering systems are replaced.
Finally it should be noted that above example is merely intended for describing the technical solutions of the present application, but not for limiting the present application technology
Scheme, although applicant is described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art
It should be appreciated that those are modified or replaced equivalently the technical solution of the utility model, without departing from the technical program
Objective and scope should all cover among the right of the utility model.
Claims (9)
1. a kind of Electric Transit charging pile major loop topological structure, including three-phase bridge PWM rectifier, the three-phase bridge PWM
Rectifier is connected with three phase network, and the alternating current for three phase network to be exported is converted into direct current；It is characterized in that, it further includes
CDD clamper full-bridge phase-shifted ZVZCS converters, the CDD clampers full-bridge phase-shifted ZVZCS converters are connected in parallel on three-phase bridge
The output terminal of PWM rectifier.
2. Electric Transit charging pile major loop topological structure according to claim 1, which is characterized in that the three-phase bridge
PWM rectifier includes six IGBT power switch pipes, each two IGBT power switch pipes three parallel branches in series, three-phase
Three outlet lines of power grid are connected between two IGBT power switch pipes of three parallel branches.
3. Electric Transit charging pile major loop topological structure according to claim 1, which is characterized in that the CDD clampers
Full-bridge phase-shifted ZVZCS converters are made of leading-bridge ZVS and lagging leg ZCS；The leading-bridge ZVS includes four
IGBT power switch pipes and two shunt capacitances, each two IGBT power switch pipes two parallel branches in series, two simultaneously
Connection capacitance is connected in parallel on respectively on two IGBT power switch pipes of same branch；The lagging leg ZCS includes coupling inductance, becomes
Depressor, four rectifier bridge diodes and auxiliary circuit, the coupling inductance are connected to the input terminal of transformer, two of transformer
Input terminal is connected in two parallel branches of leading-bridge, and two leading-out terminals of transformer are connected to by four
In two parallel branches that a rectifier bridge diode is formed；The auxiliary circuit is filtered by clamp capacitor, two diodes, output
Inductance and output filter capacitor composition, the clamp capacitor and one of Diode series, the output filter capacitor and pincers
The series arm that position capacitance and one of diode are formed is in parallel, and the output inductor and another diode are connected to
Between two parallel branches.
4. Electric Transit charging pile major loop topological structure according to claim 1, which is characterized in that the topological structure is also
Including bus capacitor, the bus capacitor is connected in parallel on three-phase bridge PWM rectifier and is converted with CDD clamper full-bridge phase-shifteds ZVZCS
Between device.
5. Electric Transit charging pile major loop topological structure according to claim 1, which is characterized in that further include lightning protection system
System, the lightning-protection system are arranged between three phase network and three-phase bridge PWM rectifier.
6. Electric Transit charging pile major loop topological structure according to claim 5, which is characterized in that the lightning-protection system
Including three switches and three lightning protection devices, every connection of three phase network is described anti-there are one switch and a lightning protection device
Thunder device is grounded.
7. Electric Transit charging pile major loop topological structure according to claim 1, which is characterized in that the three phase network
Every outlet line on be connected with major loop fuse.
8. Electric Transit charging pile major loop topological structure according to claim 1, which is characterized in that the three phase network
Wave filter is provided between three-phase bridge PWM rectifier.
9. Electric Transit charging pile major loop topological structure according to claim 8, which is characterized in that the wave filter is
LCR wave filters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721121045.XU CN207388927U (en) | 2017-09-02 | 2017-09-02 | Electric Transit charging pile major loop topological structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721121045.XU CN207388927U (en) | 2017-09-02 | 2017-09-02 | Electric Transit charging pile major loop topological structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207388927U true CN207388927U (en) | 2018-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721121045.XU Expired - Fee Related CN207388927U (en) | 2017-09-02 | 2017-09-02 | Electric Transit charging pile major loop topological structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN207388927U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109941124A (en) * | 2019-02-14 | 2019-06-28 | 深圳市永联科技股份有限公司 | Charging pile and its charging module and charging and voltage stabilizing control method |
-
2017
- 2017-09-02 CN CN201721121045.XU patent/CN207388927U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109941124A (en) * | 2019-02-14 | 2019-06-28 | 深圳市永联科技股份有限公司 | Charging pile and its charging module and charging and voltage stabilizing control method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180522 Termination date: 20190902 |