CN106452080A - Wireless charging inverter for electric vehicle - Google Patents
Wireless charging inverter for electric vehicle Download PDFInfo
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- CN106452080A CN106452080A CN201610816199.4A CN201610816199A CN106452080A CN 106452080 A CN106452080 A CN 106452080A CN 201610816199 A CN201610816199 A CN 201610816199A CN 106452080 A CN106452080 A CN 106452080A
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- diode
- mosfet pipe
- connects
- electric capacity
- lagging leg
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Classifications
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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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
-
- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/34—Snubber circuits
-
- 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
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac 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
- H02M7/537—Conversion of dc power input into ac 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, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac 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, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac 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, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
- H02M7/53873—Conversion of dc power input into ac 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, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current with digital control
-
- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/34—Snubber circuits
- H02M1/346—Passive non-dissipative snubbers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a wireless charging inverter for an electric vehicle. The wireless charging inverter is characterized in that a current-enhanced inverter topology with an auxiliary network is adopted; the wireless charging inverter comprises a leading leg, a lagging leg, the auxiliary network, a coil primary side Tr, a coil secondary side TN, an output rectifier, a primary side compensation inductor Lr, a secondary side compensation inductor Lf and a compensation capacitor Cf and a load RLd. According to the inverter, the magnitude of current when the lagging leg is switched on or off is improved by using energy storage and release of the auxiliary network; charging and discharging processes of a shunt capacitor of the lagging leg are accelerated; and zero voltage clamping of a switch tube is achieved, so that ZVS (zero voltage switching-type) soft switching is achieved and the soft switching capability of the lagging arm is improved.
Description
Technical field
The present invention relates to a kind of inverter for electric automobile.
Background technology
Increasingly serious with problem of environmental pollution, energy crisis increasingly compels eyelash, greatly develops with electric automobile as representative
New-energy automobile important in inhibiting.And the construction of the supporting electrically-charging equipment of electric automobile, the safety of charging system, convenience etc.
Development all to electric automobile and popularization have important impact.Electric automobile wireless charging compares traditional wire charging modes tool
Have safe, convenience is good, facility low cost, a series of advantages such as more conducively intelligent realization, the nothing of research electric automobile
Line charging important in inhibiting.
The various working such as rated current charging, low current charge can be deposited during charging batteries of electric automobile, system is born
Carry and power output wider range is it is desirable to charging system for electric automobile has wider power output scope.Wireless charging system
Output control have multiple means, such as DC-DC amplitude adjustment control, inverter output control, resonant network compensating parameter controls etc., inverse
Becoming device output control need not increase additional circuit device because of it, more commonly used the features such as low cost is easily achieved.Wherein phase shift control
System is compared frequency modulation control and is had the characteristics that to be independent of system response, has more preferable adaptability.
Different from common full-bridge voltage type shifting inversion device, in wireless charging system, phase-shifting full-bridge inverter has oneself
Feature.At present in radio systems, the research to inverter is less.Typically traditional conventional inverter sets for auxiliary network
Meter is fewer, realizes ZVS (ZVT) and mostly adopts software to control, such as Chinese patent CN201510084358.1 " is based on
The wireless power transmission systems ZVS Sofe Switch of frequency-tracking realizes device and method " transformer secondary information is gathered by circuit, according to
Collection information is controlled to former limit metal-oxide-semiconductor, is adjusted by frequency and realizes ZVS.This mode reacts slow, and system resource is required
Height, system stability is poor.
Content of the invention
The purpose of the present invention is to overcome conventional voltage type inverter lagging leg to be difficult to ZVT (ZVS), accounts for
Empty ratio is easily lost, and due to secondary commutation diode voltage oscillation, brings extra circuit loss, and threatens rectification two pole
Pipe safe the shortcomings of, propose a kind of electric automobile wireless charging inverter.
Electric automobile wireless charging of the present invention is topological using the intensifying current type with auxiliary network with inverter, including advanced
Arm, lagging leg, assist network, coil former limit Tr, coil secondary TN, export rectification, former limit compensates inductance Lr, secondary compensation inductance
Lf, compensating electric capacity Cf, and load RLd.
D. c. voltage signal Uin becomes high frequency ac signal, high frequency ac signal after advanced arm and lagging leg inversion
By coil former limit TrIt is sent to coil secondary TN, coil secondary TNThe AC signal receiving is converted to direct current through output rectification
Signal, direct current signal is to load RLdCharge.In inverter of the present invention, wireless energy passes through coil former limit TrWith coil secondary TNEnter
Row transmission.
Described advanced arm includes MOSFET pipe Q1, MOSFET pipe Q3, diode D1, diode D3, electric capacity C1, electric capacity
C3.Lagging leg includes MOSFET pipe Q2, MOSFET pipe Q4, diode D2, diode D4, electric capacity C2, electric capacity C4.Auxiliary network bag
Include inductance La, electric capacity Ca1, electric capacity Ca2, diode Da1, diode Da2.Output rectification includes commutation diode DR1, DR2, filter
Ripple electric capacity CDR1 and CDR2.
The drain electrode of the MOSFET pipe Q1 of advanced arm connects the drain electrode of lagging leg MOSFET pipe Q2, and the source electrode of MOSFET pipe Q3 is even
Connect the source electrode of lagging leg MOSFET pipe Q4, the A point of advanced arm connects former limit and compensates inductance LrOne end, former limit compensate inductance Lr's
The other end connects coil former limit TrOne end, coil former limit TrThe other end connect lagging leg B point.Lagging leg MOSFET pipe Q2
Drain electrode connect the anode of auxiliary network diode Da1, the source electrode of lagging leg MOSFET pipe Q4 connects auxiliary network diode Da2
Negative electrode.The B point of lagging leg connects one end of auxiliary net inductive La.Coil secondary TN1 outfan connect output rectification two
The negative electrode of pole pipe DR1, coil secondary TN3 outfans connect output commutation diode DR2 negative electrode, coil secondary TN3 output
End connects load RLdOne end.Load RLdThe other end and secondary compensate inductance LfConnect, load RLdCompany in parallel with electric capacity Cf
Connect.
The connected mode of described advanced arm internal components is：The source electrode of MOSFET pipe Q1 connects the drain electrode of MOSFET pipe Q3.
Electric capacity C1 is in parallel with diode D1, and the anode of diode D1 connects the drain electrode of MOSFET pipe Q1, and the negative electrode of diode D1 connects
The source electrode of MOSFET pipe Q1.Electric capacity C3 is in parallel with diode D3, and the anode of diode D3 connects the drain electrode of MOSFET pipe Q3, two poles
The negative electrode of pipe D3 connects the source electrode of MOSFET pipe Q3.
The connected mode of lagging leg internal components is identical with the connected mode of advanced arm.The source electrode of MOSFET pipe Q2 connects
The drain electrode of MOSFET pipe Q4.Electric capacity C2 is in parallel with diode D2, and the anode of diode D2 connects the drain electrode of MOSFET pipe Q2, two poles
The negative electrode of pipe D2 connects the source electrode of MOSFET pipe Q2.Electric capacity C4 is in parallel with diode D4, and the anode of diode D4 connects MOSFET
The drain electrode of pipe Q4, the negative electrode of diode D4 connects the source electrode of MOSFET pipe Q4.
In auxiliary network, the negative electrode of diode Da1 is connected with the anode of diode Da2, and the negative electrode of diode Da1 connects electricity
One end of sense La, diode Da1 is connected in parallel with electric capacity Ca1, and diode Da2 is connected in parallel with electric capacity Ca2.The company of output rectification
Connect the negative electrode that mode is diode DR1 and the negative electrode of diode DR2 connects, electric capacity CDR1 and diode DR1 is connected in parallel, electric capacity
CDR2 and diode DR2 is connected in parallel.
In output rectification, the negative electrode of the negative electrode of diode DR1 and diode DR2 connects, and electric capacity CDR1 and diode DR1 is simultaneously
Connection connects, and electric capacity CDR2 and diode DR2 is connected in parallel.
Inverter of the present invention compare tradition phase-shifting inverter increased by inductance La, electric capacity Ca1 and Ca2, diode Da1 and
The auxiliary network of Da2 composition.When MOSFET pipe Q4 turns off, primary current iP and auxiliary net inductive electric current iLa flow simultaneously into
The B point of lagging leg；And when Q2 turns off, iP and iLa flows out the B point of lagging leg simultaneously, therefore in MOSFET pipe Q2 and MOSFET
When pipe Q4 opens and turns off, primary current and auxiliary net inductive electric current flow out simultaneously or flow into the B point of lagging leg, two electric currents
It is overlapped mutually, even if this two electric currents give electric capacity C2, C4 discharge and recharge of lagging leg so that changer is operated in underloading simultaneously
In the case of, extract out before MOSFET pipe Q2 and MOSFET pipe Q4 on/off signal arrive/full of this junction capacitance or electricity in parallel
The whole electric charges holding, realize no-voltage on/off.
Inverter of the present invention, using the energy storage of auxiliary network and size of current during release delayed arm switch of raising, accelerates stagnant
Postbrachium shunt capacitance charge and discharge process, realizes switch tube zero voltage clamp, and and then realizes ZVS, raising lagging leg Sofe Switch energy
Power.
The size also with diode current spike in auxiliary network for the size of inductance value in inverter auxiliary network of the present invention
Closely related, therefore also need to inductance is carried out parameter optimization to reduce diode peak current.The building of real system simultaneously
During also need to take into account the volumetric wear of inductance.Binding experiment is debugged, inductance, electric capacity in the auxiliary network after final optimization pass
Parameter is：Inductance La=24uH, electric capacity Ca1=electric capacity Ca2=4.8nF.
Brief description
The electric automobile wireless charging width Power Regulation scope inverter structure figure of Fig. 1 present invention.
Specific embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated to specific embodiment.
As shown in figure 1, inverter of the present invention is using the intensifying current type topology with auxiliary network, including advanced arm, delayed
Arm, assists network, coil former limit Tr, coil secondary TN, export rectification, former limit compensates inductance Lr, secondary compensation inductance Lf, compensate
Electric capacity Cf, and load RLd.
D. c. voltage signal Uin becomes high frequency ac signal, high frequency ac signal after advanced arm and lagging leg inversion
By coil former limit TrIt is sent to coil secondary TN, coil secondary TNThe AC signal receiving is converted to through output commutated network
Direct current signal, direct current signal charges to load.In electric automobile wireless charging width Power Regulation scope inverter, wireless energy transfer is led to
Cross coil former limit TrWith coil secondary TNIt is transmitted.
Advanced arm includes MOSFET pipe Q1, MOSFET pipe Q3, diode D1, diode D3, electric capacity C1, electric capacity C3.Delayed
Arm includes MOSFET pipe Q2, MOSFET pipe Q4, diode D2, diode D4, electric capacity C2, electric capacity C4.Auxiliary network includes inductance
La, electric capacity Ca1, electric capacity Ca2, diode Da1, diode Da2.Output rectification includes commutation diode DR1, DR2, filter capacitor
CDR1 and CDR2.
As shown in figure 1, in advanced arm, the drain electrode of MOSFET pipe Q1 connects the drain electrode of lagging leg MOSFET pipe Q2, in advanced arm
The source electrode of MOSFET pipe Q3 connects the source electrode of lagging leg MOSFET pipe Q4, and the A point of advanced arm connects former limit and compensates inductance LrOne
End, former limit compensates inductance LrThe other end connect coil former limit TrOne end, coil former limit TrThe other end connect lagging leg B point.
The drain electrode of lagging leg MOSFET pipe Q2 connects the anode of auxiliary network diode Da1, and the source electrode of lagging leg MOSFET pipe Q4 connects
The negative electrode of auxiliary network diode Da2.The B point of lagging leg connects one end of auxiliary net inductive La.Coil secondary TN1 output
End connects the negative electrode of output commutation diode DR1, coil secondary TN3 outfans connect output commutation diode DR2 negative electrode,
Coil secondary TN3 outfans connect load RLdOne end.Load RLdThe other end and secondary compensate inductance LfConnect, load RLd
It is connected in parallel with electric capacity Cf.
As shown in figure 1, the connected mode of advanced arm internal components is：The source electrode of MOSFET pipe Q1 connects MOSFET pipe Q3's
Drain electrode.Electric capacity C1 is in parallel with diode D1, and the anode of diode D1 connects the drain electrode of MOSFET pipe Q1, and the negative electrode of diode D1 is even
Connect the source electrode of MOSFET pipe Q1.Electric capacity C3 is in parallel with diode D3, the drain electrode of the anode connection MOSFET pipe Q3 of diode D3, and two
The negative electrode of pole pipe D3 connects the source electrode of MOSFET pipe Q3.
As shown in figure 1, the connected mode of lagging leg internal components is identical with the connected mode of advanced arm.MOSFET pipe Q2's
Source electrode connects the drain electrode of MOSFET pipe Q4.Electric capacity C2 is in parallel with diode D2, and the anode of diode D2 connects MOSFET pipe Q2's
Drain electrode, the negative electrode of diode D2 connects the source electrode of MOSFET pipe Q2.Electric capacity C4 is in parallel with diode D4, and the anode of diode D4 is even
Connect the drain electrode of MOSFET pipe Q4, the negative electrode of diode D4 connects the source electrode of MOSFET pipe Q4.
As shown in figure 1, in auxiliary network, the negative electrode of diode Da1 is connected with the anode of diode Da2, diode Da1's
Negative electrode connects one end of inductance La, and diode Da1 is connected in parallel with electric capacity Ca1, and diode Da2 is connected in parallel with electric capacity Ca2.
As shown in figure 1, in output rectification, the negative electrode of the negative electrode of diode DR1 and diode DR2 connects, electric capacity CDR1 and
Diode DR1 is connected in parallel, and electric capacity CDR2 and diode DR2 are connected in parallel.
Inverter of the present invention compare tradition phase-shifting inverter increased by inductance La, electric capacity Ca1 and Ca2, diode Da1 and
The auxiliary network of Da2 composition.When MOSFET pipe Q4 turns off, primary current iP and auxiliary net inductive electric current iLa flow simultaneously into
The B point of lagging leg；And when MOSFET pipe Q2 turns off, primary current iP and auxiliary net inductive electric current iLa flows out delayed simultaneously
The B point of arm, therefore when MOSFET pipe Q2 and MOSFET pipe Q4 opens and turns off, primary current iP and auxiliary net inductive electric current
ILa flows out simultaneously or flows into the B point of lagging leg, and two electric currents are overlapped mutually, and this two electric currents give the electricity of lagging leg simultaneously
Even if holding C2, C4 discharge and recharge so that becoming in the case of inverse device is operated in underloading, opening/closing in MOSFET pipe Q2 and MOSFET pipe Q4
Break signal extracts/is full of whole electric charges of this junction capacitance or shunt capacitance out before arriving, realize no-voltage on/off.
Electric automobile wireless charging width Power Regulation scope inverter pass through increase auxiliary network, using auxiliary network energy storage with
Release improves size of current during delayed arm switch, pickup lag arm shunt capacitance charge and discharge process, realizes switch tube zero voltage
Clamper, and and then realize ZVS, raising lagging leg Sofe Switch ability.
The size also with diode current spike in auxiliary network for the size of inductance value in inverter auxiliary network of the present invention
Closely related, therefore also need to inductance is carried out parameter optimization to reduce diode peak current.The building of real system simultaneously
During also need to take into account the volumetric wear of inductance.Binding experiment is debugged, the inductance of auxiliary network after final optimization pass, electric capacity ginseng
Number is：La=24uH, Ca1=Ca2=4.8nF.By increasing auxiliary network, improved stagnant using energy storage and the release of auxiliary network
Size of current during arm switch afterwards, pickup lag arm shunt capacitance charge and discharge process, realize switch tube zero voltage clamp, and and then
Realize ZVS, improve lagging leg Sofe Switch ability.
According to the above-mentioned analysis to inverter, in order to realize ZVT during inverter phase shift work, assist network
It must is fulfilled for capacitance charge is put into before MOSFET pipe Q2 and MOSFET pipe Q4 opens zero condition, namely：
Meanwhile, for meeting the ZVS in wide loading range, when changer is unloaded, that is, during ip=0, following relation should be met：
Wherein, L1For LrWith LaValue after series connection, L1=Lr*La/(Lr+La), LrCompensate inductance, L for former limitaFor assisting net
Network inductance.ClagFor lagging leg electric capacity in parallel, i.e. electric capacity C2 or C4.ipCompensate inductive current, i for former limitaAuxiliary net inductive
The electric current of La, VinFor system input direct voltage.
In auxiliary network, the size of inductance value is also closely related with the size of diode current spike in auxiliary network, therefore
Also need to it is carried out parameter optimization to reduce diode peak current.Also need to take into account in the build process of real system simultaneously
The volumetric wear of inductance.Binding experiment is debugged, and in the auxiliary network after final optimization pass, inductance, the parameter of electric capacity are：La=24uH,
Ca1=Ca2=4.8nF.
Claims (7)
1. a kind of electric automobile wireless charging inverter it is characterised in that：Described inverter is using the electricity with auxiliary network
Stream enhancement mode topology, including advanced arm, lagging leg, assists network, coil former limit Tr, coil secondary TN, export rectification, former limit is mended
Repay inductance Lr, secondary compensation inductance Lf, compensating electric capacity Cf, and load RLd；D. c. voltage signal Uin is through advanced arm and delayed
Become high frequency ac signal, high frequency ac signal passes through coil former limit T after arm inversionrIt is sent to coil secondary TN, coil secondary TN
The AC signal receiving is converted to direct current signal through output commutated network, and direct current signal charges to load；
The drain electrode of the MOSFET pipe Q1 of advanced arm connects the drain electrode of lagging leg MOSFET pipe Q2, and the source electrode connection of MOSFET pipe Q3 is stagnant
The source electrode of postbrachium MOSFET pipe Q4, the A point of advanced arm connects former limit and compensates inductance LrOne end, former limit compensate inductance LrAnother
End connects coil former limit TrOne end, coil former limit TrThe other end connect lagging leg B point；The leakage of lagging leg MOSFET pipe Q2
Pole connects the anode of auxiliary network diode Da1, and the source electrode of lagging leg MOSFET pipe Q4 connects the moon of auxiliary network diode Da2
Pole；The B point of lagging leg connects one end of auxiliary net inductive La；Coil secondary TN1 outfan connect output commutation diode
The negative electrode of DR1, coil secondary TN3 outfans connect output commutation diode DR2 negative electrode, coil secondary TN3 outfans even
Meet load RLdOne end；Load RLdThe other end and secondary compensate inductance LfConnect, load RLdIt is connected in parallel with electric capacity Cf.
2. electric automobile wireless charging inverter according to claim 1 it is characterised in that：In described advanced arm,
The source electrode of MOSFET pipe Q1 connects the drain electrode of MOSFET pipe Q3；Electric capacity C1 is in parallel with diode D1, and the anode of diode D1 connects
The drain electrode of MOSFET pipe Q1, the negative electrode of diode D1 connects the source electrode of MOSFET pipe Q1；Electric capacity C3 is in parallel with diode D3, two poles
The anode of pipe D3 connects the drain electrode of MOSFET pipe Q3, and the negative electrode of diode D3 connects the source electrode of MOSFET pipe Q3.
3. electric automobile wireless charging inverter according to claim 1 it is characterised in that：In described lagging leg,
The source electrode of MOSFET pipe Q2 connects the drain electrode of MOSFET pipe Q4；Electric capacity C2 is in parallel with diode D2, and the anode of diode D2 connects
The drain electrode of MOSFET pipe Q2, the negative electrode of diode D2 connects the source electrode of MOSFET pipe Q2；Electric capacity C4 is in parallel with diode D4, two poles
The anode of pipe D4 connects the drain electrode of MOSFET pipe Q4, and the negative electrode of diode D4 connects the source electrode of MOSFET pipe Q4.
4. electric automobile wireless charging inverter according to claim 1 it is characterised in that：Described auxiliary network
In, the negative electrode of diode Da1 is connected with the anode of diode Da2, and the negative electrode of diode Da1 connects one end of inductance La, two poles
Pipe Da1 is connected in parallel with electric capacity Ca1, and diode Da2 is connected in parallel with electric capacity Ca2；The connected mode of output rectification is diode
The negative electrode of the negative electrode of DR1 and diode DR2 connects, and electric capacity CDR1 and diode DR1 is connected in parallel, electric capacity CDR2 and diode
DR2 is connected in parallel.
5. electric automobile wireless charging inverter according to claim 4 it is characterised in that：Described auxiliary circuit
In, inductance, the parameter of electric capacity are：Inductance La=24uH, electric capacity Ca1=electric capacity Ca2=4.8nF.
6. electric automobile wireless charging inverter according to claim 1 it is characterised in that：When MOSFET pipe Q4 turns off
When, primary current iP and auxiliary net inductive electric current iLa flows simultaneously into the B point of lagging leg；And when MOSFET pipe Q2 turns off, former
Side electric current iP and auxiliary net inductive electric current iPiLa flows out the B point of lagging leg simultaneously, therefore manages in MOSFET pipe Q2 and MOSFET
When Q4 opens and turns off, primary current iP and auxiliary net inductive electric current iP flow out simultaneously or flow into the B point of lagging leg, two electricity
Stream is overlapped mutually, even if this two electric currents are operated in gently to electric capacity C2, C4 discharge and recharge of lagging leg so that becoming inverse device simultaneously
In the case of load, before MOSFET pipe Q2 and MOSFET pipe Q4 on/off signal arrive, extract/be full of this junction capacitance or parallel connection out
Whole electric charges of electric capacity, realize no-voltage on/off.
7. electric automobile wireless charging inverter according to claim 1 it is characterised in that：In order to realize described inversion
ZVT during device phase shift work, described auxiliary network must is fulfilled for before MOSFET pipe Q2 and MOSFET pipe Q4 opens
Capacitance charge is put into zero condition, namely：
Meanwhile, for meeting the ZVS in wide loading range, when changer is unloaded, that is, during ip=0, following relation should be met：
Wherein, L1For LrWith LaValue after series connection, L1=Lr*La/(Lr+La), LrCompensate inductance, L for former limitaFor auxiliary network electricity
Sense；ClagFor lagging leg electric capacity in parallel, i.e. electric capacity C2 or C4；ipCompensate inductive current, i for former limitaFor assisting net inductive La
Electric current, VinFor system input direct voltage.
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| CN201610816199.4A CN106452080A (en) | 2016-09-12 | 2016-09-12 | Wireless charging inverter for electric vehicle |
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| CN201610816199.4A CN106452080A (en) | 2016-09-12 | 2016-09-12 | Wireless charging inverter for electric vehicle |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110816321A (en) * | 2019-08-12 | 2020-02-21 | 华为技术有限公司 | Wireless charging transmitting device, transmitting method and wireless charging system |
| WO2020134230A1 (en) * | 2018-12-27 | 2020-07-02 | 华为技术有限公司 | Receiving end and transmitting end of wireless charging system and wireless charging system |
| CN111654120A (en) * | 2020-05-15 | 2020-09-11 | 中国电力科学研究院有限公司 | Wireless power transmission system based on metamaterial |
| CN111864915A (en) * | 2020-07-27 | 2020-10-30 | 北京理工大学 | Wireless charging system regulation and control method and system for realizing ZVS (zero voltage switching) in wide power range |
| CN112140916A (en) * | 2020-10-15 | 2020-12-29 | 中国科学院电工研究所 | Non-contact charging system for electric automobile |
| US11190042B2 (en) | 2019-03-27 | 2021-11-30 | Huawei Technologies Co., Ltd. | Wireless charging transmitting apparatus, transmitting method, and wireless charging system |
| WO2023219558A1 (en) * | 2022-05-13 | 2023-11-16 | Nanyang Technological University | Phase-shift modulated full-bridge power inverters and methods of operation thereof |
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| US11190042B2 (en) | 2019-03-27 | 2021-11-30 | Huawei Technologies Co., Ltd. | Wireless charging transmitting apparatus, transmitting method, and wireless charging system |
| CN110816321A (en) * | 2019-08-12 | 2020-02-21 | 华为技术有限公司 | Wireless charging transmitting device, transmitting method and wireless charging system |
| CN110816321B (en) * | 2019-08-12 | 2022-11-11 | 华为技术有限公司 | Wireless charging transmitting device, transmitting method and wireless charging system |
| CN111654120A (en) * | 2020-05-15 | 2020-09-11 | 中国电力科学研究院有限公司 | Wireless power transmission system based on metamaterial |
| CN111864915A (en) * | 2020-07-27 | 2020-10-30 | 北京理工大学 | Wireless charging system regulation and control method and system for realizing ZVS (zero voltage switching) in wide power range |
| CN112140916A (en) * | 2020-10-15 | 2020-12-29 | 中国科学院电工研究所 | Non-contact charging system for electric automobile |
| CN112140916B (en) * | 2020-10-15 | 2022-04-19 | 中国科学院电工研究所 | Non-contact charging system for electric automobile |
| WO2023219558A1 (en) * | 2022-05-13 | 2023-11-16 | Nanyang Technological University | Phase-shift modulated full-bridge power inverters and methods of operation thereof |
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