CN202309538U - Standard converting device of electric automobile and distributed power source - Google Patents

Standard converting device of electric automobile and distributed power source Download PDF

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Publication number
CN202309538U
CN202309538U CN2010206465419U CN201020646541U CN202309538U CN 202309538 U CN202309538 U CN 202309538U CN 2010206465419 U CN2010206465419 U CN 2010206465419U CN 201020646541 U CN201020646541 U CN 201020646541U CN 202309538 U CN202309538 U CN 202309538U
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China
Prior art keywords
power
electric automobile
user
power source
distributed power
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CN2010206465419U
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Chinese (zh)
Inventor
陆翌
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Electric Power Research Institute of State Grid Zhejiang Electric Power Co Ltd
Zhejiang Electric Power Test and Research Insititute
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Electric Power Research Institute of State Grid Zhejiang Electric Power Co Ltd
Zhejiang Electric Power Test and Research Insititute
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/60Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies relating to charging of electric vehicles
    • Y02T90/16Information or communication technologies improving the operation of electric vehicles
    • Y02T90/167Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
    • Y02T90/168
    • Y02T90/169
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S30/00Systems supporting specific end-user applications in the sector of transportation
    • Y04S30/10Systems supporting the interoperability of electric or hybrid vehicles
    • Y04S30/12Remote or cooperative charging
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S30/00Systems supporting specific end-user applications in the sector of transportation
    • Y04S30/10Systems supporting the interoperability of electric or hybrid vehicles
    • Y04S30/14Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

The utility model discloses a standard converting device of an electric automobile and a distributed power source. A conventional distributed power source can not be effectively isolated from an electrical network, can not help to guarantee the demands of high-end users for the quality of electric energy, and can not help to prevent electric energy from being injected into the electrical network by heavily-polluted electric power users. The standard converting device of the utility model is composed of an electrical network side module, a user side module, an electric automobile charge and discharge module, and a controller. The user side module is connected with the electric automobile charge and discharge module in parallel and then is connected with the electrical network side module in series. Trigger pulse signals generated by the controller are respectively transmitted to the electrical network side module, the user side module and the electric automobile charge and discharge module via a fiber. The controller is communicated with a background server via the Ethernet. According to the utility model, the distributed power source and the electrical network can be effectively isolated, and functions of dynamic reactive compensation, fault current restriction, electric energy quality control and the like are provided.

Description

The standardization current converter of a kind of electric automobile and distributed power source
Technical field
The utility model relates to confession and uses electrical domain, the standardization current converter of specifically a kind of electric automobile and distributed power source.
Background technology
Continuous expansion along with scale of power; The drawback of large-scale electrical power system shows especially out day by day, and its cost is high, and operation control is dumb; Be difficult to adapt to the increasingly high reliability requirement of user, flexibly the variation of follow load and diversified quality of power supply demand.The begin one's study development model of Future Power System of scholar; Obviously merely enlarging scale of power can not meet the demands; So American-European electric power brainstrust has proposed to pollute less, reliability height, reduced investment, generation mode flexibly, with the distributed power generation of environmental compatible and the mode of electrical network cooperation greatly.Implemented " the integrated application in European electrical network of regenerative resource and distributed power generation " project like European Union, the U.S. has proposed " intelligent grid " and projects such as " senior power distribution automations ".
Along with China to the vigorously supporting of regenerative resource, distributed power generation displays as a kind of emerging power generation mode, the generating set of this low capacity provides electric power near the power distribution network user, become replenishing of centralized generating.Common distributed power source has little internal combustion engine, photovoltaic, mini fan etc.Bring many problems but for the fail safe and the stability of electrical network yet in the conventional electric power system, introduce distributed power source, mainly contain:
(1) operation control: the scheduling of distributed power source and operation can't be regulated and control it by proprietary owner's control of power supply effectively.
(2) output-power fluctuation: utilize the meritorious input of the distributed power source of wind energy, solar energy to have natural fluctuation, so the distributed power source output-power fluctuation is very big, degree of uncertainty is high, causes voltage ripple of power network to cause flickering easily.
(3) harmonic pollution: distributed power source often adopts rectification and inverter to insert electrical network, can export a large amount of multiple harmonic electric currents to electrical network.
(4) reactive power: wind-driven generator adopts asynchronous machine mostly, when rotation speed of fan reduces, need absorb a large amount of reactive powers from electrical network.
Along with CHINESE INDUSTRIES upgrading, electric energy more and more develops towards the direction that becomes more meticulous as a kind of commodity, and increasing power consumer requires increasingly highly to the quality of power supply, is embodied as:
(1) load responsive to the quality of power supply: like semiconductor production factory, paper mill etc., voltage descends a few tens of milliseconds, will cause the production equipment cisco unity malfunction and a large amount of waste products occur.
(2) itself be the load of pollutant sources: along with our province metallurgical industry; The development of chemical industry and electric railway; Nonlinear-load (silicon rectifying equipment in the electric power system; Electric locomotive, electrolysis installation) and impact load (arc furnace, rolling mill) harmonic pollution, asymmetry (negative phase-sequence) and the fluctuation of electrical network are on the rise.
Therefore, in order to ensure the fail safe and the reliability of electrical network, the power output of distributed power source is carried out remote dispatching, it is very urgent and necessary strengthening supervising.Therefore, work out a kind of universal access control technology, guarantee the demand of high-end user, prevent that the power consumer of heavily contaminated from injecting electric energy to electrical network, and guarantee that distributed generation system obtains reasonable use, just become very necessary the quality of power supply.
The utility model content
The utility model provides the standardization current converter of a kind of electric automobile and distributed power source; Realize effective isolation of distributed power source and electrical network; To guarantee the demand of high-end user to the quality of power supply; The power consumer that prevents heavily contaminated injects electric energy to electrical network, and guarantees that distributed generation system obtains reasonable use.
For this reason; The utility model adopts following technical scheme: the standardization current converter of a kind of electric automobile and distributed power source; It is characterized in that it comprises the grid side power model USM that connects public power distribution network, connects user's user side power model CSM and is used for the electric automobile charge-discharge modules EVM of energy storage, connect with grid side power model USM after user side power model CSM and the electric automobile charge-discharge modules EVM parallel connection;
Described grid side power model USM forms three-phase bridge rectification circuit by controllable devices, through transformer or directly insert public power distribution network, can four quadrant running, and realize meritorious, idle two-way control with public power distribution network; Described user side power model CSM forms the three phase full bridge inverter circuit by controllable devices, through transformer or directly insert the user side distributed power source, can four quadrant running, and realize two-way control meritorious, idle between intermediate dc bus and the distributed power source; The stepping-up/stepping-down chopper circuit that described electric automobile charge-discharge modules EVM is made up of controllable devices; With the electric automobile power battery interface; Electrokinetic cell is carried out charge or discharge, and each is made up of USM and CSM 6 controllable devices (like IGBT), is identical in structure voltage-source type converter;
The start pulse signal that controller produces is transferred to grid side power model USM, user side power model CSM and electric automobile charge-discharge modules EVM respectively through optical fiber; Controller respectively with the management system BMS communication of a liquid crystal display and an electric automobile power battery; Controller is gathered the electric network data of public power distribution network and distributed power source; Controller is equipped with the background monitoring software module through an Ethernet and a background server communication in the background server.
If the installed capacity that the user does not install distributed power source or user side distributed power source is during less than load; The alternating current of public power distribution network side is transformed to direct current through after the rectification of USM; Part is given electric automobile power battery charging through EVM, and part is that alternating current is supplied with load through the CSM inversion.If the installed capacity of user side distributed power source is greater than when load, the redundance electricity is a direct current through the CSM rectification then, and part is given electric automobile power battery charging through EVM, and part is that alternating current is sold to public power distribution network through the USM inversion.When cutting off the power supply if public power distribution network breaks down, the electricity in the electric automobile power battery is supplied with the user through EVM and CSM, can keep the uninterrupted power supply in a period of time.If the installed capacity of user side distributed power source temporarily can't be generated electricity owing to natural conditions limit less than load or user side distributed power source; But hope that user side distributed power source power output keeps the constant of a period of time; Then the electricity in the electrokinetic cell is supplied with public power distribution network through EVM and USM, keeps power output constant.If user's AC system is to public power distribution network output electric energy, and hope reduces the electric energy of user's output, then passes through the power output of the direct Long-distance Control USM of background monitoring software module.
The control strategy of the standardization current converter of above-mentioned electric automobile and distributed power source is following:
Grid side module USM adopts the control strategy of stable DC voltage, and when battery charge or when public power distribution network is the customer charge power supply, USM is operated in rectification state to keep the stable of dc voltage; When battery or user's AC system when public power distribution network injects active power, USM is operated in inverter mode to keep the stable of dc voltage; Also come the stable DC busbar voltage during USM output reactive power through closed-loop control to real component.
User side module CSM adopts and decides the control strategy that frequency is decided the alternating voltage amplitude, keeps user side voltage magnitude and frequency in claimed range, and the voltage-phase of user side distributed power source and CSM and frequency keep synchronously.
To keep storage battery side average anode current constant with deciding the direct current control strategy for electric automobile charge-discharge modules EVM; Realization is to the constant current charge or the constant current discharge of storage battery and possess constant current pressure limiting function, promptly is lower than and changes voltage regulation operation down in limited time automatically over to when battery charging voltage is higher than the upper limit or discharge voltage.
The utility model can be realized effective isolation of distributed power source and electrical network, can also take into account functions such as dynamic passive compensation, fault current restriction, quality of power supply control; Through the electric energy exchange of distributed power source and electric automobile power battery, and the power supply of electrokinetic cell to loading, solved the problem that distributed energy power fluctuates naturally, realized the two-way controllable flow of power at public power distribution network and user side; User's AC system can softly be incorporated into the power networks under the control of scheduling, soft off-the-line, in addition can with the nonsynchronous situation of public power distribution network under be incorporated into the power networks; The user can adjust according to time-of-use tariffs, utilizes distributed power source or electrical network electric energy to give electric automobile power battery charging, also can sell electrical network the electric energy of electrokinetic cell, obtains certain economic interests; As far as electrical network, also can play the effect of peak load shifting, raising load factor, minimizing system total installed capacity.
Below in conjunction with Figure of description and embodiment the utility model is done further explain.
Description of drawings
Fig. 1 is structure chart (the meritorious exchange of 1 expression among the figure, the idle exchange of 2 expressions, the 3 expression points of common connection of the utility model standardization current converter; 4 expression user AC systems, 5 expression loads, 6 expression distributed power sources; The public power distribution network of 7 expressions, 8 expression electric automobile power batteries).
Fig. 2 is the circuit theory diagrams (5 expression loads among the figure, 6 expression distributed power sources, the public power distribution network of 7 expressions, 8 expression electric automobile power batteries) of the utility model standardization current converter.
Fig. 3 is the utility model USM main circuit schematic diagram.
Fig. 4 is the utility model USM loop control theory figure.
Fig. 5 is the utility model CSM main circuit schematic diagram.
Fig. 6 is the utility model EVM main circuit schematic diagram.
Fig. 7 is control principle figure (the meritorious exchange of 1 expression among the figure, the idle exchange of 2 expressions, 3 expression points of common connection, the 4 expression user AC systems of the utility model; 5 expression loads, 6 expression distributed power sources, the public power distribution network of 7 expressions, 8 expression electric automobile power batteries; 9 expression electric network datas, 10 expression battery datas, 11 expression controllers; The 12-Ethernet, 13-background monitoring software module, 14-liquid crystal display).
Embodiment
The standardization current converter of electric automobile shown in Fig. 1-2 and distributed power source; It is made up of the grid side power model USM that connects public power distribution network, the electric automobile charge-discharge modules EVM that connects user's user side power model CSM and be used for energy storage, connects with grid side power model USM after user side power model CSM and the electric automobile charge-discharge modules EVM parallel connection.
Described grid side power model USM forms three-phase bridge rectification circuit by controllable devices, through transformer or directly insert public power distribution network, can four quadrant running, and realize meritorious, idle two-way control with public power distribution network; Described user side power model CSM forms the three phase full bridge inverter circuit by controllable devices, through transformer or directly insert the user side distributed power source, can four quadrant running, and realize two-way control meritorious, idle between intermediate dc bus and the distributed power source; The stepping-up/stepping-down chopper circuit that described electric automobile charge-discharge modules EVM is made up of controllable devices with the electric automobile power battery interface, carries out charge or discharge to electrokinetic cell.
The circuit structure of USM and CSM is basic identical, by compositions such as IGBT three phase full bridge circuit, LC filter unit and switchgears.EVM is made up of DC/DC stepping-up/stepping-down chopper circuit, LC filter circuit and switchgear etc., elaborates below.
1, grid side power model (USM)
USM main circuit schematic diagram is as shown in Figure 3.Before device starts, the manual closed AC side service entrance switch K1 of elder generation, closed then soft start contactor K3, AC power is charged to dc bus capacitor through resistance, closed main contactor K2 after dc voltage reaches set point, main circuit is accomplished and is powered on.Can open trigger impulse subsequently, device gets into closed loop and is incorporated into the power networks.
But the USM four quadrant running is taked to gain merit/idle component decoupling zero control technology, and it is idle both can to have exported perception, and also exportable capacitive reactive power can require the continuously adjustable reactive power of output according to electrical network, participates in the voltage/idle control of electrical network; Both can active power of output, also can absorb active power, for back level CSM, EVM provides and electrical network between the passage of active power two-way exchange.USM has adopted Active Power Factor Correction Technology simultaneously, and the power factor of net side can reach more than 0.99, and the current harmonics aberration rate can not produce harmonic wave and idle pollution to electrical network less than 5%.
The controlling schemes of three-phase grid-connected converter has multiple, and the utility model has adopted the vector control technology based on rotating coordinate system, and the closed-loop control block diagram is as shown in Figure 4.Owing between d axle that rotates system under d, the q coordinate system and q axle, there is coupling; This by the great dynamic property that influences system of rotation 3/2 conversion caused coupling meeting; The utility model has adopted the state feedback decoupling controlling schemes based on rotation d, q coordinate system; It is to walk around mutually under the coordinate system through introducing the current status of d axle and q axle two, has realized the decoupling zero process between d, the q axle in real time through state feedback matrix.
Under rotating coordinate system, the component of output current on the d axle represented the active current component, and the component on the q axle has been represented the reactive current component, through the control of the decoupling zero between d, the q axle, realized the independent control to its output active current and reactive current.Wherein the given of reactive current can be regulated according to the needs of scheduling or system, and the given of active current need be produced by the closed-loop regulator of dc voltage.USM is through realizing the balance of AC side and DC side Power Exchange to the stable control of DC bus-bar voltage.
2, user side power model (CSM)
CSM moves as the first-harmonic sinusoidal voltage source in the utility model; Therefore the control of CSM is a kind of voltage control; Through controlling the sinusoidal voltage of its three-phase output voltage for symmetry; Thereby realizing the requirement of CSM system for load terminal voltage under imperfect loading condition, also is the specified sinusoidal voltage that output voltage remains symmetry.For the voltage source converter of three-phase and four-line, the key of its voltage control technology is how to overcome load uneven and non-linear to the current transformer output voltage influence, keeps the symmetrical sine voltage of the output voltage of current transformer for expectation.
In the practical application, the user side power-supply system is generally three-phase four-wire system, and possibly there is more serious imbalance in three-phase load.The three-phase three-wire system inverter can seriously influence its output voltage waveforms quality generation during unbalanced operation because center line can't be provided.The inverter system scheme of three-phase four-wire system is more, and scheme commonly used has to adopt and adds a brachium pontis and constitute mid point, with the common point (being neutral point) of three-phase output thus be connected on and constitute four brachium pontis structures on this brachium pontis.The brachium pontis that increases in the three-phase four-leg inverter can directly be controlled neutral point voltage; And produce neutral point current and flow into load; The one degree of freedom of this increase; Make the three-phase four-arm inverter have three independently controllable voltages, three-phase output voltage is full decoupled, thereby has the ability under unbalanced load, to keep the symmetry output of three-phase voltage.
The utility model takes to increase in the output of three-phase three-wire system inverter the scheme of Dyn11 power frequency isolating transformer, through transformer center line is provided, and circuit theory diagrams are as shown in Figure 5.CSM and user side distributed power supply system interface, but four quadrant running, it is idle both can to have exported perception, and also exportable capacitive reactive power can require the continuously adjustable reactive power of output according to the user side electrical network.CSM is operated in inverter mode, both can active power of output, also can absorb active power.Offer the user side load after can be when user side is meritorious not enough, when the user side electric energy is superfluous, also can electric energy be fed back to the DC side bus the inversion of dc bus electric energy.CSM adopts SPWM technology and voltage waveform control technology, can electric energy stable, high-quality be provided for consumer networks.
3, electric automobile charge-discharge modules (EVM)
EVM and electric automobile power battery interface; Can carry out charge or discharge control to battery; Both can electrical network electric energy or user side dump energy be stored in the battery, and also can energy content of battery release be offered in electrical network or the user side electrical network, its main circuit is as shown in Figure 6.
Before device starts, closing relay K1 at first, battery side electric capacity is through the charging of soft start resistance, closed contactor K2 after voltage is set up.Main circuit is accomplished and is powered on, and can get into charge/discharge/standby operation.
When EVM is operated in charged state; Locking S2; This moment, S2 was equivalent to diode, and the equivalence of Fig. 6 major loop is a buck circuit, and the duty ratio of pwm pulse through adjusting S1 is the output voltage of scalable buck circuit; Thereby keep the constant of charging current, after charging finishes, change the constant-pressure operation pattern over to.
When EVM is operated in discharge condition; Locking S1; This moment, S1 was equivalent to diode, and the equivalence of Fig. 6 major loop is a boost chopper, and the duty ratio of pwm pulse through adjusting S2 is the output voltage of scalable boost chopper; Thereby keep the constant of discharging current, after discharge finishes, promptly change standby mode over to.
Classical PID adjuster is adopted in the closed-loop control of EVM, is controlled quentity controlled variable in the constant current section with the battery charging/discharging electric current, is controlled quentity controlled variable with the output voltage in the constant voltage section, and the output of PID adjuster and triangular carrier relatively produce start pulse signal.
As shown in Figure 7, controller is gathered the electric network data of public power distribution network and distributed power source, and the start pulse signal that controller produces is transferred to grid side power model USM, user side power model CSM and electric automobile charge-discharge modules EVM respectively through optical fiber.Controller adopts the communication of RS232 liquid crystal display, realizes the man-machine interface interactive function; Adopt the management system BMS communication of CAN interface and electric automobile power battery, carry out the battery data exchange; Through Ethernet and background server communication, the background monitoring software module is housed in the background server, realize the controlled function of remote scheduling through the background monitoring software module.

Claims (4)

1. the standardization current converter of electric automobile and distributed power source; It is characterized in that it comprises the grid side power model USM that connects public power distribution network, the user side power model CSM that connects the user and the electric automobile charge-discharge modules EVM that is used for energy storage, connect with grid side power model USM after user side power model CSM and the electric automobile charge-discharge modules EVM parallel connection;
The start pulse signal that controller produces is transferred to grid side power model USM, user side power model CSM and electric automobile charge-discharge modules EVM respectively through optical fiber; Controller respectively with the management system BMS communication of a liquid crystal display and an electric automobile power battery; Controller is gathered the electric network data of public power distribution network and distributed power source, and controller is through an Ethernet and a background server communication.
2. the standardization current converter of electric automobile according to claim 1 and distributed power source is characterized in that described grid side power model USM forms three-phase bridge rectification circuit by controllable devices, through transformer or directly insert public power distribution network.
3. the standardization current converter of electric automobile according to claim 1 and 2 and distributed power source; It is characterized in that described user side power model CSM forms the three phase full bridge inverter circuit by controllable devices, through transformer or directly insert the user side distributed power source.
4. the standardization current converter of electric automobile according to claim 3 and distributed power source is characterized in that the stepping-up/stepping-down chopper circuit that described electric automobile charge-discharge modules EVM is made up of controllable devices, with the electric automobile power battery interface.
CN2010206465419U 2010-12-08 2010-12-08 Standard converting device of electric automobile and distributed power source Expired - Lifetime CN202309538U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103944410A (en) * 2014-05-12 2014-07-23 东南大学 Electronic power transformer and communication-line-free data HUB achieving method thereof
CN106787225A (en) * 2016-10-21 2017-05-31 国家电网公司 Electric vehicle rapid charging energy storage device
CN109075697A (en) * 2018-02-11 2018-12-21 深圳欣锐科技股份有限公司 The ripple optimal control method and interlock circuit of pfc circuit output voltage
CN110581642A (en) * 2018-06-08 2019-12-17 维谛技术有限公司 Converter soft start circuit and method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103944410A (en) * 2014-05-12 2014-07-23 东南大学 Electronic power transformer and communication-line-free data HUB achieving method thereof
CN103944410B (en) * 2014-05-12 2017-02-15 东南大学 Electronic power transformer and communication-line-free data HUB achieving method thereof
CN106787225A (en) * 2016-10-21 2017-05-31 国家电网公司 Electric vehicle rapid charging energy storage device
CN109075697A (en) * 2018-02-11 2018-12-21 深圳欣锐科技股份有限公司 The ripple optimal control method and interlock circuit of pfc circuit output voltage
CN109075697B (en) * 2018-02-11 2020-10-02 深圳欣锐科技股份有限公司 Ripple optimization control method for PFC circuit output voltage and related circuit
CN110581642A (en) * 2018-06-08 2019-12-17 维谛技术有限公司 Converter soft start circuit and method
CN110581642B (en) * 2018-06-08 2020-09-29 维谛技术有限公司 Converter soft start circuit and method

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Granted publication date: 20120704