CN106992683A - A kind of voltage source and current source complex incentive noncontact translation circuit - Google Patents

A kind of voltage source and current source complex incentive noncontact translation circuit Download PDF

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Publication number
CN106992683A
CN106992683A CN201710147968.0A CN201710147968A CN106992683A CN 106992683 A CN106992683 A CN 106992683A CN 201710147968 A CN201710147968 A CN 201710147968A CN 106992683 A CN106992683 A CN 106992683A
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noncontact
compensation
primary side
contact transformer
branch road
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CN106992683B (en
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陈乾宏
柯光洁
张钰晟
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Nanjing University of Aeronautics and Astronautics
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Nanjing University of Aeronautics and Astronautics
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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
    • H02M3/3353—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 at least two simultaneously operating switches on the input side, e.g. "double forward" or "double (switched) flyback" converter
    • 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
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • 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
    • H02M1/0083—Converters characterised by their input or output configuration
    • H02M1/0087—Converters characterised by their input or output configuration adapted for receiving as input a current source
    • 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
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ac-Ac Conversion (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The invention discloses a kind of voltage source and current source complex incentive noncontact translation circuit, including the first noncontact conversion module branch road and the second noncontact conversion module branch road, using noncontact converter, output characteristics is inversely proportional with the former secondary coefficient of coup of non-contact transformer under constant pressure source forcing, the characteristic that output characteristics is directly proportional to the former secondary coefficient of coup of non-contact transformer under constant current source forcing, by voltage source and current source complex incentive, combination output, eliminate or greatly reduce the change of the system output characteristics because of caused by the change of the coefficient of coup, it is conducive to the design of late-class circuit, improve power transmission capabilities of the single contactless power supply system under different use conditions, it is effectively improved the fault-tolerance and applicability of system.

Description

A kind of voltage source and current source complex incentive noncontact translation circuit
Technical field
The voltage source of the present invention and the noncontact converter of current source complex incentive, belong to field of conversion of electrical energy.
Background technology
Non-contact power realizes " wireless power " using magnetic coupling, i.e., the noncontact transformation being kept completely separate using former secondary Device, passes through the coupled transfer electric energy of high frequency magnetic field so that primary side (supply side) and secondary (electricity consumption side) in energy transfer process It is not physically connected.Compared with traditional contact is powered, non-contact power is easy to use, safe, no-spark and Danger Electric shock risk, nothing Laying dust and contact loss, no mechanical wear and corresponding maintenance issues, are suitable for a variety of bad weathers and environment, are easy to implement certainly Dynamic power supply, has a good application prospect.
One complete radio energy transmission system is made up of the primary and secondary side of electrical isolation.Whole system includes 3 Core cell：High-frequency electrical energy converter unit, resonance compensation unit and noncontact converter unit.Wherein, noncontact converter unit belongs to In loose coupling, it haves the shortcomings that lower coupling, big leakage inductance compared to close coupling transformer, if not compensated for whole system In can have substantial amounts of reactive power, greatly reduce system transimission power and system whole efficiency, constrain non-contact power The promotion and application of technology.Simultaneously because the former secondary of radio energy transmission system is kept completely separate, there can be original in practical application Secondary relative position changes and just to various workings such as air gap distance changes, causes the circuit parameter of transformer to occur larger become Change, so as to influence the service behaviour of noncontact converter.Except non-contact transformer electricity caused by the change of former secondary relative position Road Parameters variation, similar to common power, radio energy transmission system should be able to adapt to different applications, load attribute And power grade.
In order to reduce power capacity demand of the contactless power supply system to a supply side, and improve secondary side energy biography Movement Capabilities.Generally in the former secondary of non-contact transformer, the mode of capacitance compensation is respectively adopted to eliminate the influence of leakage inductance, also It is the resonance compensation unit in radio energy transmission system.Chwei-Sen Wang；Stielau,O.H.；Covic,G.A.," Design considerations for a contactless electric vehicle battery charger," Industrial Electronics,IEEE Transactions on,vol.52,no.5,pp.1308,1314,Oct.2005 Give former secondary string simultaneously, string string and simultaneously and and go here and there four kinds of basic compensating forms specificity analysis.Other different compensation ways Also different articles inquire into it.Induction and conclusion is carried out to different compensation topologies to can be found that：1st, different benefit Repaying network has different input-output characteristics, and the output characteristics of noncontact converter is closely related with the coefficient of coup；2、 The value of former secondary compensating electric capacity is all calculated in the case where the former secondary air gap of non-contact transformer is fixed and obtained, when former secondary When side air gap change or appearance skew misalignment, i.e., when the coefficient of coup changes, resonant frequency point can offset original set Reference point is counted, the power transmission capabilities and applicability of contactless power supply system are greatly limit；3rd, a kind of compensation topology can be Voltage, electric current, the power of electrical equipment offer are all limited.
In order to improve the power transmission capabilities of contactless power supply system under former secondary dislocation drift condition, Auckland Mickel Budhia,John T.Boys,Grant A.Covic and Chang-Yu Huang,"Development of a Single- Sided Flux Magnetic Coupler for Electric Vehicle IPT Charging Systems"IEEE Transactions on Industrial Electronics, vol.60, no.1, January 2013 proposes to become in noncontact The superposition tertiary winding (by abbreviation Q winding) overlapping with vice-side winding, subtracts in the middle of the winding of depressor secondary two (by abbreviation DD windings) The transversion malposition susceptibility of small the secondary output power, " sense in " being completely counterbalanced by into and out of magnetic flux " when preferably solving dislocation Answer blind spot " and the problem of influence transformer efficiency transmittability.But this DDQ winding construction is only capable of improving noncontact transformation Output characteristics of the device under the conditions of transversion malposition, to the change of former secondary vertical range (i.e. air gap changes), this " DDQ " around Still great changes have taken place for the output characteristics of group structure.In view of in practical application non-contact transformer original secondary before size of gaps with And the uncertainty of misalignment, it is still necessary to further inquire into research.
A kind of wireless power transmission circuit of high efficient and reliable how is obtained, i.e., can improve noncontact converter in transformation Device original secondary air gap change and the output stability of misalignment；Different loads need for electricity is can adapt to again, as this hair Bright design focal point.
The content of the invention
Goal of the invention：For above-mentioned prior art, propose that the noncontact of a kind of voltage source and current source complex incentive is converted Device, effectively improves the stability of output characteristics under the conditions of variable coupling coefficient.
Technical scheme：A kind of voltage source and current source complex incentive noncontact translation circuit, including the first noncontact are converted Module branch road and the second noncontact conversion module branch road；The first noncontact conversion module branch route the first input source, first Primary side compensation network, the first non-contact transformer, the first secondary compensation network, the first rectification circuit, the first filter network are successively It is connected in series composition, the second noncontact conversion module branch route the second input source, the second primary side compensation network, second non-connect Thixotroping depressor, the second secondary compensation network, the second rectification circuit, the second filter network are sequentially connected in series, first filtering The output of network and the output of the second filter network are connected in series or in parallel to be followed by load two ends；For first noncontact Transformer and the second non-contact transformer, wherein the electric current of non-contact transformer primary side winding is constant basis all the way for inflow, is flowed into The electric current of another road non-contact transformer primary side winding is the variable quantity with load and coefficient of coup change.
Further, wherein the constant current of non-contact transformer primary side winding passes through LC converting networks or control all the way for inflow The mode of circuit processed is realized.
Further, first input source and the second input source are AC constant voltage source or AC constant-current source, or direct current is defeated Enter source plus inverter circuit conversion is obtained.
Further, in two-way noncontact conversion module the first primary side compensation network and the second primary side compensation network, the One secondary compensates network and the second secondary compensates network and mended for Series Sheet capacitance compensation, single capacitor compensation in parallel, connection in series-parallel electric capacity Repay and series capacitor compensation, series/parallel LC network building outs, the compensation of LCL forms, the compensation of LCC forms, or any of the above structure Combining form.
Further, the secondary circuit of two-way noncontact conversion module is shared, and forms primary side double winding secondary simplex winding Non-contact transformer structure.
Further, the winding construction of the first non-contact transformer and the second non-contact transformer is single coil structure, double The structure of loop construction or multi-thread coil structures, primary side magnetic core and/or secondary magnetic core be U-shaped, I types, both sides column bottom along side to The combination of the edge expansion type of external expansion, cross or above-mentioned shape.
Beneficial effect：A kind of voltage source proposed by the invention and current source complex incentive noncontact translation circuit with it is existing The technical characteristics that technology is compared are, using noncontact converter under constant pressure source forcing output characteristics and non-contact transformer The former secondary coefficient of coup (mutual inductance) is inversely proportional, output characteristics and the former secondary coefficient of coup of non-contact transformer under constant current source forcing The characteristic that (mutual inductance) is directly proportional, by voltage source and current source complex incentive, combination output is eliminated or greatly reduced because of the coefficient of coup The change of system output characteristics caused by the change of (mutual inductance), it is conducive to the design of late-class circuit, improves single non-connect Power transmission capabilities of the electric power system under different use conditions are touched, the fault-tolerance and applicability of system is effectively improved.
Brief description of the drawings
Fig. 1 is the noncontact translation circuit of traditional single supply excitation.
Fig. 2 be single supply excitation ac/ac noncontact converter units universal circuit, Fig. 2 (a) be univoltage source forcing and Its correspondence compensation lattice network schematic diagram, Fig. 2 (b) is single electric current source forcing and its correspondence compensation lattice network schematic diagram.
Fig. 3 is that the singly-terminal pair equivalent circuit of the excitation ac/ac noncontact converter unit different ports of single supply shown in Fig. 2 shows It is intended to, Fig. 3 (a) is the equivalent two-terminal network schematic diagram that input source compensates network with primary side, Fig. 3 (b) is that input source is mended with primary side The generalized equivalent singly-terminal pair schematic diagram of network is repaid, Fig. 3 (c) is equiva lent impedance electricity on the right side of noncontact transformer primary side input port Road schematic diagram, Fig. 3 (d) is two ends of non-contact transformer output port left side that the mutual inductance coupling model based on non-contact transformer is obtained Network, Fig. 3 (e) is general flow pressure, presses circulation to change circuit diagram.
Fig. 4 (a) is the voltage source and the circuit structure of current source complex incentive noncontact translation circuit embodiment one of the present invention Schematic diagram, Fig. 4 (b), Fig. 4 (c), Fig. 4 (d) are Fig. 4 (a) equivalent transformation circuit.
Fig. 5 is the voltage source and the circuit diagram of current source complex incentive noncontact translation circuit embodiment two of the present invention.
Fig. 6 (a) is the voltage source and current source complex incentive noncontact translation circuit embodiment three-circuit structure of the present invention Schematic diagram, Fig. 6 (b) is Fig. 6 (a) Fundamental Wave Equivalent Circuit.
Fig. 7 is the voltage source and current source complex incentive noncontact translation circuit example IV circuit diagram of the present invention.
Fig. 8 is the voltage source and the circuit diagram of current source complex incentive noncontact translation circuit embodiment five of the present invention.
Fig. 9 is the voltage source and the circuit diagram of current source complex incentive noncontact translation circuit embodiment six of the present invention.
Figure 10 is the voltage source and the circuit diagram of current source complex incentive noncontact translation circuit embodiment seven of the present invention.
Figure 11 (a) be the present invention voltage source with it is non-used in current source complex incentive noncontact translation circuit test case one Transformer device structure figure is contacted, Figure 11 (b) is output voltage gain simulation result under the fully loaded transportation condition of test case one, and Figure 11 (c) is Output voltage gain simulation result under the conditions of the underloading of test case one.
The voltage source that Figure 12 is the present invention is born from current source complex incentive noncontact translation circuit test case two different The simulation result of output voltage under the conditions of load.
Figure 13 is the voltage source and current source complex incentive noncontact translation circuit structural representation of the present invention.
Embodiment
The present invention is done below in conjunction with the accompanying drawings and further explained.
Fig. 1 is the noncontact translation circuit of traditional single supply excitation, including inverter bridge, non-contact transformer, former secondary Compensate network and output rectification filter part.The optional circuit of inverter bridge is a lot, including recommend, half-bridge, full-bridge circuit etc., according to Its input power characteristic can be divided into voltage source feed inverter bridge and current source feed inverter bridge again.To highlight the design weight of the present invention Point, it is the research object of the present invention to take the ac/ac noncontacts converter unit in the dotted line frame in Fig. 1.By inverter bridge output equivalent For an alternating current source, current rectifying and wave filtering circuit is equivalent to a load resistance.
The universal circuit for the ac/ac noncontact converter units that Fig. 2 encourages for single supply, including input AC source 1, primary side are mended Repay network 2, non-contact transformer 3, secondary compensation network 4, equivalent load 5., can will be non-according to the difference of input power characteristic Contact transformation device is divided into the imported noncontact converter of voltage source and the imported noncontact converter of current source, different input sources Characteristic need to correspond to different compensation topology structures, respectively as shown in Fig. 2 (a) and Fig. 2 (b).Compensate network humorous by inductance, electric capacity etc. The element that shakes is constituted, wherein ZP1、ZP2、ZS1、ZS2The respectively former and deputy side compensation T-network series connection of the imported noncontact converter of voltage source Compensating reactance parameter, GP、GSThe respectively former and deputy side compensation T-network shunt compensation conductance of the imported noncontact converter of voltage source is joined Number；GP1、GP2、GS1、GS2The respectively former and deputy side compensation π network shunt compensations conductance of the imported noncontact converter of current source is joined Number, ZP、ZSThe respectively former and deputy side of the imported noncontact converter of current source compensates π series network compensating reactance parameters.Work as series connection When compensating reactance parameter is zero, correspondence branch, short-circuit；When shunt compensation conductance parameter is zero, correspondence branch circuit break.Therefore, lead to Cross and change compensation T-network and the value of π network parameters, it is possible to achieve different compensation ways.
Fig. 3 is the singly-terminal pair equivalent circuit that single supply shown in Fig. 2 encourages ac/ac noncontact converter unit different ports. Based on Thevenin's theorem and Nortons theorem, the input AC source 1 in Fig. 2 and primary side can be compensated network 2 it is equivalent into one with AB is port singly-terminal pair, and the external characteristics of equivalent singly-terminal pair is identical with the topological output external characteristic of primary circuit.In view of primary side The different possibilities of the value of network parameter are compensated, there are four kinds of possible equivalent circuit forms shown in Fig. 2 (a), wherein ve1、 ve2、ie1、ie2For the controlled source after equivalent, Zev、Zei、Gev、GeiSource impedance is removed for singly-terminal pair on the left of AB.According to Dai Weinan etc. Effect, the source-series impedance of a controlled voltage can be equivalent to the impedance in parallel of a controlled current source, you can to think Figure is 1. 4. equivalent with figure in Fig. 2 (a)；From the characteristic of voltage source and current source, voltage source parallel impedance is equivalent to voltage source, Current source series impedance is equivalent to current source.Therefore single supply can be encouraged to input AC source 1 and the original of noncontact converter Side compensation network 2 is further equivalent to two kinds of singly-terminal pairs as shown in Fig. 3 (b), wherein controlled voltage source ve, controlled current source ie It is related to resonant element parameter, the working frequency such as input ac power, the inductance, the electric capacity that compensate in network, except source impedance ZeWith The resonant element parameter such as inductance, electric capacity, the working frequency compensated in network is related, with the circuit parameter of non-contact transformer without Close.
The connection in series-parallel relation of mutual inductance coupling model and impedance based on non-contact transformer, can be by Fig. 2 middle ports AB right side Circuit non-contact transformer 3, secondary compensation network 4, load resistance 5 are equivalent to the singly-terminal pair shown in Fig. 3 (c), wherein ZTSFor The secondary loop impedance of noncontact converter.The same mutual inductance coupling model based on non-contact transformer, can be obtained on the left of CD ports Shown in singly-terminal pair such as Fig. 3 (d).And the singly-terminal pair on the right side of CD ports is passive impedance connection network, by secondary Resonance Neural Network Inductance, electric capacity and the load resistance connection in series-parallel of network are formed by connecting, and the circuit parameter with non-contact transformer is unrelated.
The singly-terminal pair equivalent circuit of ac/ac noncontact converter unit different ports is encouraged based on single supply shown in Fig. 3, can The output voltage at load resistance two ends is obtained in the hope of solution.Singly-terminal pair is equivalent to that controlled voltage is source-series to remove source on the left of the AB ports During impedance, load two ends output voltage can be expressed as：
Wherein H is load resistance in the voltage division factor on the right side of CD on two end passive networks.From analysis above, Z in formula (1)TS、H、Ze、veIt is unrelated with non-contact transformer parameter, therefore as j ω LP+ZeWhen=0, output voltage is with noncontact The mutual inductance of transformer primary secondary is inversely proportional change, and the electric current for now flowing into primary side winding becomes with non-contact transformer mutual inductance and load Change and change.
When singly-terminal pair is equivalent to controlled current source on the left of AB ports, that is, the electric current for flowing into primary side winding is steady state value When, load two ends output voltage can be expressed as：
It can see from formula (2), it is defeated when input ac power (1) is equivalent to controlled current source with primary side compensation network (2) Go out mutual inductance linear change of the voltage with the former secondary of non-contact transformer.Convolution (1) and formula (2), it can be found that noncontact becomes When depressor input port is respectively that voltage source is inputted with current source, the voltage at non-contact transformer load resistance two ends is respectively with non- It is in opposite variation tendency to contact transformer mutual inductance change, i.e., when non-contact transformer is voltage source input, output voltage with Mutual inductance M successively decreases change；And when non-contact transformer is that current source is inputted, output voltage is with mutual inductance M incremental variations.
Based on such circuit characteristic, it may be said that bright operation principle of the invention, and thus draw the technical side of the present invention Case and embodiment.
It is worth noting that the voltage source of the present invention and the current source spy in the noncontact converter of current source complex incentive Refer to flow into non-contact transformer primary side winding electric current be constant-current source, can for actual current source forcing series transformer primary side around Group, or obtained by actual applied voltage source forcing series LC topological transformation, on the left of Fig. 3 (e) shown in circuit, or pass through The electric current for controlling circuit to control to flow into primary side winding is constant basis；Voltage source in the present invention can be virtual voltage source, also may be used To be obtained by actual impressed current source forcing parallel connection LC topological transformation, on the right side of Fig. 3 (e) shown in circuit.
Embodiment one：
Fig. 4 gives the circuit of the first embodiment of voltage source of the present invention Yu the noncontact converter of current source complex incentive Structure chart.Noncontact translation circuit shown in Fig. 4 (a) is DC-DC conversion circuit, two-way noncontact converter, branch road 1 and branch road 2 It is connected in parallel in direct current input side, DC output side is connected in series.Include direct current per noncontact conversion module all the way defeated Enter voltage source 1_1, inverter 1_2, primary side compensation network 2, non-contact transformer 3, secondary compensation network 4, rectification circuit 5_1, Filter circuit 5_2, load resistance 5_3, wherein DC input voitage source 1_1 are that two-way is public with load resistance 5_3.For difference branch Road 1 and branch road 2, branch road 1 is represented with reference " F ", and reference " S " represents electricity in branch road 2, two-way noncontact conversion module First subscript " F " of road component or " S " are to distinguish branch road 1 and branch road 2, and second subscript is to distinguish phase in each branch road Same component.In circuit shown in Fig. 4 (a), UinFor DC input voitage source, Sx1~Sx4For primary side inversion full-bridge switch pipe, CxP For primary compensation capacitor, CxSFor secondary compensating electric capacity, LxPFor non-contact transformer primary side winding self-induction, LxSFor noncontact transformation Device vice-side winding self-induction, MxFor the former vice-side winding mutual inductance of non-contact transformer, LxqFor series compensation inductance, Dx1~Dx4For secondary Commutation diode, CxfFor filter capacitor, RLFor load resistance, the x in subscript is represented " F " or " S ".
DC input voitage source 1_1 and inverter circuit F1_2 is output as an ac square wave, therefore can be by port FaFb left side circuit equivalent is into a square wave alternating-current input voltage source uFab；Similarly port SaSb left side circuit can also be waited Imitate into a square wave alternating-current input voltage source uSab；DC side is connected after two-way noncontact converter rectification, and two-way shares same One load, can be equivalent into two resistance R by load resistance 5_3 based on circuit fundamental theoremFL、RSLSeries connection, so as to incite somebody to action Two-way noncontact conversion module is untied in source with load-side, shown in equivalent rear circuit such as Fig. 4 (b).To improve noncontact conversion The efficiency of device, is typically designed converter and is operated near resonant frequency point, resonant inductance electric current near sinusoidal, then can use base Ripple approximate analysis method, by the variable in resonant network all with its fundametal compoment approximate substitution.When rectifier bridge is continuously turned on, its bridge The voltage and current at arm midpoint same phase all the time, then secondary rectifier bridge 5_1, filtering link 5_2 and load 5_3 can be equivalent to one Linear resistance RE.Based on fundamental wave analysis, Fig. 4 (a) illustrated embodiments circuit topology can be further equivalent to shown in Fig. 4 (c), U in figurexs、ixs、uxo、ixoX in respectively input voltage, electric current, output voltage, the fundametal compoment of electric current, subscript is represented " F " Or " S ".It can see from Fig. 4 (c), each branch road component units are corresponded with Fig. 2 (a).
The primary side compensation network F2 and non-contact transformer F3 of branch road 1 primary side self-induction constitutes LCL compensation topologies, designs LFq With non-contact transformer F3 primary side self-induction LFPIt is equal, CFPWith LFPResonance, secondary compensation network F4 is single capacitor series compensation, Series compensation capacitance CFSWith non-contact transformer F3 secondary self-induction LFSResonance.It is equivalent based on Dai Weinan at resonant frequency point Primary side input voltage source F1 is equivalent to a controlled current source with primary side compensation network F3, shown in such as Fig. 4 (d), now flows into branch The electric current of the primary side winding of road 1 only with virtual voltage source forcing and resonant inductance LFqInduction reactance it is relevant, as voltage source excitation UinIt is constant When, the electric current for flowing into the primary side winding of branch road 1 is steady state value, not with the former secondary change in location of non-contact transformer and load change Change.The primary side compensation network S2 of branch road 2 is series capacitor compensation, compensating electric capacity CSPWith non-contact transformer S3 primary side self-induction LSPResonance, non-contact transformer S3 secondary self-induction and secondary compensation network S4 constitute LCL compensation topologies, design LSqConnect with non- Thixotroping depressor S3 secondary self-induction LSSIt is equal, CSSWith LSSResonance.The port AB singly-terminal pairs of branch road 2 are that input voltage is source-series humorous Shake impedance, when transformer coupling coefficient changes or loads change, the equivalent input impedance to primary side changes, inflow branch road 2 The electric current of non-contact transformer primary side winding can also change.Therefore two-way noncontact conversion module of the embodiment of the present invention is non- Contact transformer input port is respectively that voltage source is inputted with current source.Below based on the mutual inductance coupling model of transformer, two-way is discussed The output characteristics of noncontact conversion module.Resonant inductor capacitor is met：
Wherein ω0For resonant frequency.Input voltage, the electric current of the noncontact converter of branch road 1 shown in Fig. 4 (c), output voltage Meet：
Wherein ZFrFor the reflected umpedance of the noncontact converter secondary of branch road 1,Abbreviation is carried out to formula (4), During full remuneration, the input impedance Z of branch road 1FinWith output voltage virtual value UFOSRespectively：
Wherein UFsFor the fundamental wave virtual value of input voltage.It can see from formula (5), output voltage UFOSWith the noncontact of branch road 1 Transformer primary secondary mutual inductance MFPositive correlation, and output voltage is unrelated with load resistor value；Frequency point is being fully compensated in input impedance Place is always pure resistance, and impedance magnitude is related to load resistance with mutual inductance.
Branch road 2 can similarly be obtained in the input impedance Z being fully compensated at pointSinWith output voltage virtual value USOSRespectively For：
Wherein USsFor the fundamental wave virtual value of the input voltage of branch road 2.It can see from formula (6), output voltage USOSWith branch road 2 Non-contact transformer original secondary mutual inductance MSIt is inversely proportional, and output voltage is unrelated with load resistor value；Input impedance is being fully compensated It is always pure resistance at Frequency point, impedance magnitude is related to load resistance with mutual inductance.Convolution (5) understands that total output is electric with formula (6) Press gain UoFor：
In wireless charging system, the primary side of non-contact transformer is typically fixed, and secondary may move, when non-contact transformer When relative motion occurs for former secondary, the secondary of two width non-contact transformers is identical with respect to the primary side direction of motion in the present embodiment, and two The mutual inductance M variation tendencies of amplitude variation depressor are identical, and convolution (7) is understood, the output voltage of the embodiment of the present invention one with mutual inductance M change Change is non-monotonic, by reasonable Design of Transformer parameter, can effectively realize two-way noncontact conversion module output voltage mutually complementary Repay, improve the stability of the total output voltage of system under the conditions of variable coupling coefficient；Simultaneously from formula (7) as can be seen that bar is fully compensated The output voltage of the embodiment of the present invention one is unrelated with load resistance under part, i.e., can realize that output voltage is permanent under the conditions of varying load It is fixed；Convolution (5) and two-way noncontact conversion module input impedance expression formula in (6), it can be found that under the conditions of being fully compensated originally The input impedance of inventive embodiments one is always purely resistive, you can take working frequency to ensure that two-way is non-slightly larger than frequency is fully compensated Contact transformation module always works in weak perceptual area, realizes the ZVS of switching tube, improves system effectiveness.
When deviateing full remuneration point, if the same time-varying of air gap of branch road 1 and the former secondary of the non-contact transformer in branch road 2 It is small, i.e. MF, MSIt is big with time-varying, now LFP、LFS、LSP、LSSAll change therewith, the constant-gain point of branch road 1 and branch road 2 is to low frequency It is mobile, and the voltage gain of branch road 1 becomes big, the voltage gain step-down of branch road 2 is whole if now working frequency is also moved to low frequency Bulk voltage gain can be compensated；If the air gap of branch road 1 and the former secondary of the non-contact transformer in branch road 2 is big with time-varying, That is MF, MSDiminish simultaneously, now LFP、LFS、LSP、LSSAll change therewith, the constant-gain point of branch road 1 and branch road 2 is to high frequency displacement Dynamic, and the voltage gain of branch road 1 diminishes, the voltage gain of branch road 2 becomes big, if now working frequency also to high-frequency mobile if it is overall Voltage gain can be compensated.
In order that output voltage gain adapts to wider range mutual inductance change, it need to ensure mutual corresponding to output voltage extreme point Inductance value is in operation interval.From formula (7) mathematical function characteristic, two-way non-contact transformer parameter need to be designed in full remuneration Formula (8) is met at point.
Non-contact transformer F3 and the second non-contact transformer S3 winding construction be single coil structure, two coil configuration or The structure of multi-thread coil structures, primary side magnetic core and/or secondary magnetic core is U-shaped, I types, both sides column bottom along the abducent side in side Along the combination of extended pattern, cross or above-mentioned shape.
Embodiment two：
Fig. 5 gives voltage source of the present invention and the circuit of second of embodiment of noncontact converter of current source complex incentive Structure chart.The converter of two-way noncontact shown in Fig. 5, branch road 1 is connected in series with branch road 2 in DC output side.Branch road 1 is defeated by exchanging Enter current source F1, primary side compensation network F2, non-contact transformer F3, secondary compensation network F4, rectification circuit F5_1, filter circuit F5_2, load resistance 5_3 are constituted, and wherein DC input voitage source 1_1 and load resistance 5_3 is that two-way is public；Branch road 2 is by direct current Input voltage source S1_1, inverter S1_2, primary side compensation network S2, non-contact transformer S3, secondary compensation network S4, rectified current Road S5_1, filter circuit S5_2, load resistance 5_3 compositions.Comparison diagram 5 and Fig. 4 (a) is it can be found that embodiment two and embodiment One difference is input source, in Fig. 4 (a) illustrated embodiments one, the input electricity of the non-contact transformer primary side port of branch road 1 Stream source is obtained by DC input voitage source 1_1, inverter F2, primary side compensation network F3 equivalent transformations；And embodiment illustrated in fig. 5 two In, the input current source of the non-contact transformer primary side port of branch road 1 is external dc driving source F1.Based on Dai Weinan is equivalent can Know, when AC input current source is met in embodiment two：
Parameter is the circuit parameter in embodiment illustrated in fig. 4 one on the right of equal sign in formula (9).When formula (9) is set up, according to two Port equivalent model understands that embodiment two has identical output characteristics with embodiment one, repeats no more here.
Embodiment three：
Fig. 6 gives the circuit of the third embodiment of voltage source of the present invention Yu the noncontact converter of current source complex incentive Structure chart.The converter of two-way noncontact shown in Fig. 6, branch road 1 is connected in parallel with branch road 2 in direct current input side, and DC output side is simultaneously Connection is formed by connecting.Include DC input voitage source 1_1, inverter 1_2, primary side compensation network per noncontact conversion module all the way 2nd, non-contact transformer 3, secondary compensation network 4, rectification circuit 5_1, filter circuit 5_2, load resistance 5_3, wherein direct current are defeated Enter voltage source 1_1 and load resistance 5_3 public for two-way.For difference branch road 1 and branch road 2, branch road 1 is represented with " F ", " S " is represented First subscript " F " of circuit components or " S " be to distinguish branch road 1 and branch road 2 in branch road 2, two-way noncontact conversion module, Second subscript is to distinguish identical component in each branch road.In circuit shown in Fig. 6, UinFor DC input voitage source, Sx1~ Sx4For primary side inversion full-bridge switch pipe, CxPFor primary compensation capacitor, CxSFor secondary compensating electric capacity, LxPIt is former for non-contact transformer Side winding self-induction, LxSFor non-contact transformer vice-side winding self-induction, MxFor the former vice-side winding mutual inductance of non-contact transformer, LxqFor string Connection compensation inductance, Dx1~Dx4For secondary commutation diode, CxfFor filter capacitor, RLFor load resistance, the x in subscript is represented " F " Or " S ".
The analysis method of similar embodiment one, based on fundamental wave is equivalent can be equivalent into Fig. 6 (b) by Fig. 6 (a), u in figurexs、 ixs、uxo、ixoX in respectively input voltage, electric current, output voltage, the fundametal compoment of electric current, subscript is represented " F " or " S ".Branch The primary side compensation network F2 on road 1 is LC networks, realizes that input voltage source is converted into input current source, electric capacity CFPWith LFqResonance, it is secondary Side compensation network F4 is single capacitor shunt compensation, Shunt compensation capacitor CFSWith non-contact transformer F3 secondary self-induction LFSResonance. At resonant frequency point, a controlled electricity is equivalent to based on the equivalent primary side input voltage source F1 of Dai Weinan and primary side compensation network F3 Stream source, then flow into the primary side winding of branch road 1 electric current only with virtual voltage source forcing and resonant inductance LFqInduction reactance it is relevant, work as voltage Source forcing UinWhen constant, the electric current for flowing into the primary side winding of branch road 1 is steady state value, not with the former secondary change in location of non-contact transformer And load changes and changed.The primary side compensation network S2 of branch road 2 is series capacitor compensation, compensating electric capacity CSPWith non-contact transformer S3 primary side self-induction LSPResonance, secondary compensation network S4 series compensation capacitance CSSWith non-contact transformer S3 secondary self-induction LSSResonance.The port AB singly-terminal pairs of branch road 2 are input voltage source series resonant impedance, when transformer coupling coefficient changes or negative When carrying change, the equivalent input impedance to primary side changes, and flows into the electric current of the non-contact transformer primary side winding of branch road 2 and can also occur Change.Therefore the non-contact transformer input port of two-way noncontact conversion module of the embodiment of the present invention is respectively voltage source and electricity Stream source is inputted.
Mutual inductance coupling model based on transformer, can obtain the output characteristics of two-way noncontact conversion module.The noncontact of branch road 1 Input voltage, the electric current of converter, output voltage are met：
Wherein, ω0For resonant frequency, ZFrFor the reflected umpedance of the noncontact converter secondary of branch road 1,Input voltage, the electric current of the noncontact converter of branch road 2, output voltage are met：
Wherein ZSrFor the reflected umpedance of the noncontact converter secondary of branch road 2,Respectively to formula (10), formula (11) abbreviation is carried out, the output current virtual value I of branch road 1 and branch road 2 when can be fully compensated forFOS、ISOSRespectively：
Wherein UFs、USsThe respectively fundamental wave virtual value of two-way input voltage.It can see from formula (12), output current IFOS With the former secondary mutual inductance M of the non-contact transformer of branch road 1FPositive correlation, and output current is unrelated with load resistor value；Output current ISOS With the former secondary mutual inductance M of the non-contact transformer of branch road 2SIt is inversely proportional, and it is unrelated with load resistor value.The then two-way noncontact of embodiment three Converter Parallel opertation total current is：
The secondary of two width non-contact transformers is identical with respect to the primary side direction of motion in the present embodiment, the mutual inductance of two amplitude variation depressors M variation tendencies are identical, and convolution (13) understands that the output current of the embodiment of the present invention three is non-monotonic with mutual inductance M change, passes through Reasonable Design of Transformer parameter, can effectively realize two-way noncontact conversion module output current and mutually compensate for, and improve and become coupling The stability of the total output current of system under coefficient condition；Simultaneously from formula (13) as can be seen that the present invention is real under the conditions of being fully compensated The output current for applying example three is unrelated with load resistance, i.e., constant output current can be realized under the conditions of varying load.
In order that output current gain adapts to wider range mutual inductance change, it need to ensure mutual corresponding to output current extreme point Inductance value is in operation interval.From formula (13) mathematical function characteristic, two-way non-contact transformer parameter need to be designed and mended completely Formula (14) is met at repaying.
Example IV：
Fig. 7 gives voltage source of the present invention and the circuit of the 4th kind of embodiment of noncontact converter of current source complex incentive Structure chart.The converter of two-way noncontact shown in Fig. 7, branch road 1 is connected in parallel with branch road 2 in DC output side.Branch road 1 is defeated by direct current Enter voltage source F1_1, inverter F1_2, primary side compensation network F2, non-contact transformer F3, secondary compensation network F4, rectification circuit F5_1, filter circuit F5_2, load resistance 5_3 compositions, wherein DC input voitage source 1_1 and load resistance 5_3 are that two-way is public With；Branch road 2 compensates network S2, non-contact transformer S3, secondary by AC input current source S1, primary side and compensates network S4, rectification Circuit S5_1, filter circuit S5_2, load resistance 5_3 compositions.In circuit shown in Fig. 7, UinFor DC input voitage source, iinFor AC input current source, SF1~SF4For primary side inversion full-bridge switch pipe, CxPFor primary compensation capacitor, CxSFor secondary compensating electric capacity, LxPFor non-contact transformer primary side winding self-induction, LxSFor non-contact transformer vice-side winding self-induction, MxIt is former for non-contact transformer Vice-side winding mutual inductance, LxqFor series compensation inductance, Dx1~Dx4For secondary commutation diode, CxfFor filter capacitor, RLFor load electricity X in resistance, subscript is represented " F " or " S ".
The primary side compensation network F2 of branch road 1 is single capacitor series compensation, series compensation capacitance CFPWith non-contact transformer F3 Primary side self-induction LFPResonance, secondary compensation network F4 is also single capacitor series compensation, series compensation capacitance CFSWith noncontact transformation Device F3 secondary self-induction LFSResonance.The primary side compensation network S2 of branch road 2 is series capacitor compensation, compensating electric capacity CSPWith noncontact Transformer S3 primary side self-induction LSPResonance, non-contact transformer S3 secondary self-induction LSSLCL is constituted with secondary compensation network S4 to mend Network is repaid, realizes that pressure circulation is changed, design resonant inductance LSqWith non-contact transformer S3 secondary self-induction LSSIt is equal, electric capacity CFPWith LFqResonance.It will be seen in fig. 7 that the port AB singly-terminal pairs of branch road 1 are input voltage source series resonant impedance, the port AB of branch road 2 Singly-terminal pair is input current source series resonant impedance, can be equivalent to an input current source.Therefore two-way of the embodiment of the present invention The non-contact transformer input port of noncontact conversion module is respectively that voltage source is inputted with current source.
Using fundamental wave analysis method, the mutual inductance coupling model based on transformer can obtain the defeated of two-way noncontact conversion module Go out characteristic.Input voltage, the electric current of the noncontact converter of branch road 1, output voltage are met：
Wherein ω0For resonant frequency, ZFrFor the reflected umpedance of the noncontact converter secondary of branch road 1,Branch Input voltage, the electric current of the noncontact converter of road 2, output voltage are met：
Wherein ZSrFor the reflected umpedance of the noncontact converter secondary of branch road 2,
Abbreviation is carried out to formula (15), formula (16) respectively, the output current of branch road 1 and branch road 2 when can be fully compensated for Virtual value IFOS、ISOS, input impedance ZFin、ZSinRespectively：
Wherein UFs、ISsThe respectively fundamental wave virtual value of two-way input voltage, input current.It can see from formula (17), it is defeated Go out electric current IFOSWith the former secondary mutual inductance M of the non-contact transformer of branch road 1FIt is inversely proportional, and output current is unrelated with load resistor value；It is defeated Go out electric current ISOSWith the former secondary mutual inductance M of the non-contact transformer of branch road 2SIt is directly proportional, and it is unrelated with load resistor value；Two-way noncontact The input impedance of converter is always pure resistance being fully compensated at Frequency point, and impedance magnitude is related to load resistance with mutual inductance.Then Example IV two-way noncontact converter Parallel opertation total current is：
The secondary of two width non-contact transformers is identical with respect to the primary side direction of motion in the present embodiment, the mutual inductance of two amplitude variation depressors M variation tendencies are identical, and convolution (18) understands that the output current of the embodiment of the present invention four is non-monotonic with mutual inductance M change, passes through Reasonable Design of Transformer parameter, can effectively realize two-way noncontact conversion module output current and mutually compensate for, and improve and become coupling The stability of the total output current of system under coefficient condition；Simultaneously from formula (18) as can be seen that the present invention is real under the conditions of being fully compensated The output current for applying example four is unrelated with load resistance, i.e., can realize that output voltage is constant under the conditions of varying load；From formula (17) Two-way noncontact conversion module input impedance expression formula, it can be found that the input of the embodiment of the present invention four hinders under the conditions of being fully compensated Anti- is always purely resistive, you can take working frequency to ensure that two-way noncontact conversion module works all the time slightly larger than frequency is fully compensated In weak perceptual area, the ZVS of switching tube is realized, system effectiveness is improved.
In order that output current gain adapts to wider range mutual inductance change, it need to ensure mutual corresponding to output current extreme point Inductance value is in operation interval.From formula (18) mathematical function characteristic, two-way non-contact transformer parameter need to be designed and mended completely Formula (19) is met at repaying.
Embodiment five：
Fig. 8 gives voltage source of the present invention and the circuit of the 5th kind of embodiment of noncontact converter of current source complex incentive Structure chart.The converter of two-way noncontact shown in Fig. 8, branch road 1 is connected in parallel with branch road 2 in DC output side.Branch road 1 is defeated by exchanging Enter current source F1, primary side compensation network F2, non-contact transformer F3, secondary compensation network F4, rectification circuit F5_1, filter circuit F5_2, load resistance 5_3 are constituted；Branch road 2 compensates network S2, non-contact transformer S3, pair by AC input current source S1, primary side Side compensation network S4, rectification circuit S5_1, filter circuit S5_2, load resistance 5_3 compositions.In circuit shown in Fig. 8, ixinTo hand over Flow input current source, CxPFor primary compensation capacitor, CxSFor secondary compensating electric capacity, LxPFor non-contact transformer primary side winding self-induction, LxSFor non-contact transformer vice-side winding self-induction, MxFor the former vice-side winding mutual inductance of non-contact transformer, Dx1~Dx4For secondary rectification Diode, LxfFor filter inductance, CxfFor filter capacitor, RLFor load resistance, the x in subscript is represented " F " or " S ".
The primary side compensation network F2 of branch road 1 is single capacitor shunt compensation, Shunt compensation capacitor CFPWith non-contact transformer F3 Primary side self-induction LFPResonance, secondary compensation network F4 is single capacitor series compensation, series compensation capacitance CFSWith non-contact transformer F3 secondary self-induction LFSResonance, can be by a current source parallel impedance equivalent transformation based on Dai Weinan is equivalent and Norton equivalent For a voltage source series impedance, then circuit can be equivalent to the singly-terminal pair of a controlled voltage source on the left of the port AB of branch road 1. The primary side compensation network S2 of branch road 2 is series capacitor compensation, compensating electric capacity CSPWith non-contact transformer S3 primary side self-induction LSPIt is humorous Shake, secondary compensation network S4 is single capacitor shunt compensation, Shunt compensation capacitor CSSWith non-contact transformer S3 secondary self-induction LSS Resonance, the port AB singly-terminal pairs of branch road 2 are input current source series resonant impedance, can be equivalent to an input current source.Therefore The non-contact transformer input port of two-way noncontact conversion module of the embodiment of the present invention is respectively that voltage source is inputted with current source.
Using fundamental wave analysis method, the mutual inductance coupling model based on transformer can obtain the defeated of two-way noncontact conversion module Go out characteristic.Input voltage, the electric current of the noncontact converter of branch road 1, output voltage are met：
Wherein ω0For resonant frequency, ZFrFor the reflected umpedance of the noncontact converter secondary of branch road 1,Branch Input voltage, the electric current of the noncontact converter of road 2, output voltage are met：
Wherein ZSrFor the reflected umpedance of the noncontact converter secondary of branch road 2,
Abbreviation is carried out to formula (20), formula (21) respectively, the output current of branch road 1 and branch road 2 when can be fully compensated for Virtual value IFOS、ISOSRespectively：
Wherein IFin、ISinThe respectively fundamental wave virtual value of two-way input current.It can see from formula (22), output current IFOSWith the former secondary mutual inductance M of the non-contact transformer of branch road 1FIt is inversely proportional, and output current is unrelated with load resistor value；Output current ISOSWith the former secondary mutual inductance M of the non-contact transformer of branch road 2SIt is directly proportional, and it is unrelated with load resistor value.Then the two-way of embodiment five is non- Contact transformation device Parallel opertation total current is：
The secondary of two width non-contact transformers is identical with respect to the primary side direction of motion in the present embodiment, the mutual inductance of two amplitude variation depressors M variation tendencies are identical, and convolution (23) understands that the output current of the embodiment of the present invention five is non-monotonic with mutual inductance M change, passes through Reasonable Design of Transformer parameter, can effectively realize two-way noncontact conversion module output current and mutually compensate for, and improve and become coupling The stability of the total output current of system under coefficient condition；Simultaneously from formula (23) as can be seen that the present invention is real under the conditions of being fully compensated The output current for applying example five is unrelated with load resistance, i.e., constant output current can be realized under the conditions of varying load.
In order that output current gain adapts to wider range mutual inductance change, it need to ensure mutual corresponding to output current extreme point Inductance value is in operation interval.From formula (23) mathematical function characteristic, two-way non-contact transformer parameter need to be designed and mended completely Formula (24) is met at repaying.
Embodiment six：
Fig. 9 gives voltage source of the present invention and the circuit of the 6th kind of embodiment of noncontact converter of current source complex incentive Structure chart.The converter of two-way noncontact shown in Fig. 9, branch road 1 is connected in parallel with branch road 2 in DC output side.Branch road 1 is defeated by exchanging Enter voltage source F1, primary side compensation network F2, non-contact transformer F3, secondary compensation network F4, rectification circuit F5_1, filter circuit F5_2, load resistance 5_3 are constituted；Branch road 2 compensates network S2, non-contact transformer S3, pair by AC input current source S1, primary side Side compensation network S4, rectification circuit S5_1, filter circuit S5_2, load resistance 5_3 compositions.In circuit shown in Fig. 9, uFinTo hand over Flow input voltage source, iSinFor AC input current source, CxPFor primary compensation capacitor, CxSFor secondary compensating electric capacity, LxPConnect to be non- Thixotroping depressor primary side winding self-induction, LxSFor non-contact transformer vice-side winding self-induction, MxFor the former vice-side winding of non-contact transformer Mutual inductance, LST1、LST2、CSTResonant inductance, the electric capacity of T-network, D are compensated for the secondary of branch road 2x1~Dx4For secondary commutation diode, Lxf For filter inductance, CxfFor filter capacitor, RLFor load resistance, the x in subscript is represented " F " or " S ".
Primary side compensation network F2, the secondary compensation network F4 of branch road 1 are single capacitor series compensation, series compensation capacitance CFP、CFSRespectively with non-contact transformer F3 primary side self-induction LFP, secondary self-induction LFSResonance.The primary side of branch road 2 compensates network S2 Series capacitor compensation, compensating electric capacity CSPWith non-contact transformer S3 primary side self-induction LSPResonance, secondary compensation network S4 is by one Individual series compensation capacitance series LC L T-network is constituted, series compensation capacitance CSSWith non-contact transformer S3 secondary self-induction LSS Resonance, LCL type T-network is used to realize that pressure circulation is changed, design resonant inductance LST1With LST2, resonant capacitance CSTWith LST2Resonance, when humorous Shake inductance LST1With non-contact transformer S3 secondary self-induction LSS, can be by series compensation capacitance C when inductance value is equalSSWith resonance electricity Feel LST1Replaced etc. effectiveness wire.The port AB singly-terminal pairs of branch road 1 are input voltage source series resonant impedance, the port AB bis- of branch road 2 End network is input current source series resonant impedance, can be equivalent to an input current source.Therefore two-way of the embodiment of the present invention is non- The non-contact transformer input port of contact transformation module is respectively that voltage source is inputted with current source.
Using fundamental wave analysis method, the mutual inductance coupling model based on transformer can obtain the defeated of two-way noncontact conversion module Go out characteristic.Input voltage, the electric current of the noncontact converter of branch road 1, output voltage are met：
Wherein ω0For resonant frequency, ZFrFor the reflected umpedance of the noncontact converter secondary of branch road 1,Branch Input voltage, the electric current of the noncontact converter of road 2, output voltage are met：
Wherein ZSrFor the reflected umpedance of the noncontact converter secondary of branch road 2：
Abbreviation is carried out to formula (25), formula (26) respectively, the output current of branch road 1 and branch road 2 when can be fully compensated for Virtual value IFOS、ISOSRespectively：
Wherein UFin、ISinThe respectively fundamental wave virtual value of two-way input voltage, electric current.It can see from formula (27), output Electric current IFOSWith the former secondary mutual inductance M of the non-contact transformer of branch road 1FIt is inversely proportional, and output current is unrelated with load resistor value；Output Electric current ISOSWith the former secondary mutual inductance M of the non-contact transformer of branch road 2SIt is directly proportional, and it is unrelated with load resistor value.Then five liang of embodiment Noncontact converter Parallel opertation total current in road is：
The secondary of two width non-contact transformers is identical with respect to the primary side direction of motion in the present embodiment, the mutual inductance of two amplitude variation depressors M variation tendencies are identical, and convolution (28) understands that the output current of the embodiment of the present invention six is non-monotonic with mutual inductance M change, passes through Reasonable Design of Transformer parameter, can effectively realize two-way noncontact conversion module output current and mutually compensate for, and improve and become coupling The stability of the total output current of system under coefficient condition；Simultaneously from formula (28) as can be seen that the present invention is real under the conditions of being fully compensated The output current for applying example six is unrelated with load resistance, i.e., constant output current can be realized under the conditions of varying load.
In order that output current gain adapts to wider range mutual inductance change, it need to ensure mutual corresponding to output current extreme point Inductance value is in operation interval.From formula (28) mathematical function characteristic, two-way non-contact transformer parameter need to be designed and mended completely Formula (29) is met at repaying.
Embodiment seven：
Figure 10 gives voltage source of the present invention and the electricity of the 7th kind of embodiment of noncontact converter of current source complex incentive Line structure figure.It is different from voltage source and Impetus of Current Source work that embodiment one said before is arrived in embodiment six, embodiment seven Two sections of winding L of primary side for same non-contact transformer 3FP、LSPOn, the output of secondary simplex winding.Embodiment seven is defeated by exchanging Enter voltage source F1, the compensation network F2 of first primary side winding, AC input current source S1, the compensation net of second primary side winding Network S2, non-contact transformer 3, secondary compensation network 4, rectification circuit 5_1, filter circuit 5_2, load resistance 5_3 compositions.Fig. 9 In shown circuit, uFinFor AC-input voltage source, iSinFor AC input current source, LFP、LSPRespectively non-contact transformer is former The self-induction of the two sections of windings in side, CFP、CSPThe respectively compensating electric capacity of two sections of windings of non-contact transformer primary side, LSFor noncontact transformation Device vice-side winding self-induction, CSFor secondary compensating electric capacity, MF、MSRespectively two primary and secondary side windings of non-contact transformer is mutual Sense, MFSFor the mutual inductance between two sections of windings of non-contact transformer primary side, D1~D4For secondary commutation diode, LfFor filter inductance, CfFor filter capacitor, RLFor load resistance.Primary side winding LFPInput port AB on the left of singly-terminal pair be input voltage subject string Join resonance impedance, primary side winding LSPInput port AB on the left of singly-terminal pair be input current source series resonant impedance, can wait Imitate as an input current source.Therefore non-contact transformer two-way primary side winding input port of the embodiment of the present invention is respectively voltage Source is inputted with current source.
Using fundamental wave analysis method, the mutual inductance coupling model based on transformer can obtain the conversion single channel of noncontact shown in Figure 10 Basic input/output relation：
When the symmetrical coiling of the winding of primary side two, it is believed that two-way winding parameter is identical, and its winding self-induction uniformly uses LpTable Show, two-way primary side winding is represented with vice-side winding mutual inductance unification with M, the coefficient of coup is unified to be represented with k, then can be solved by formula (30) Obtain output voltage UoIt is in the expression formula being fully compensated at Frequency point：
Wherein M0For the mutual inductance value of former secondary at design point, design secondary compensating electric capacity compensation secondary self-induction is fully compensated Value.It can see from formula (31), output voltage is non-monotonic with mutual inductance M change.Primary side can be also derived by by formula (30) simultaneously Two-way winding be fully compensated point at exchange input impedance be respectively：
WhereinkFSFor the coefficient of coup between the winding of primary side two.Then when y is real number, it can push away Obtain input impedance Z under the conditions of variable elementFinCoefficient of coup when being always weak perceptual between primary side two-way winding needs the bar met Part is：
It is being fully compensated at point, the coefficient of coup of non-contact transformer needs to meet：
Formula (35) is substituted into formula (33), can be by input impedance ZSinApproximately abbreviation is：
ZSin≈y+jω0LP(1-kFS) (35)
Design ω0LP(1-k12) ＞ ＞ y when, input impedance ZSinIt is approximately pure perception.In order to realize the ZVS of switching tube, need Want the pure resistance of input impedance, it is therefore desirable to input series capacitor compensation impedance all the way, compensating electric capacity C in current sourceSPCapacitance it is approximate For：
Test case one：
For the feasibility of the checking present invention, using voltage source shown in Fig. 3 and current source complex incentive noncontact translation circuit as Example, has carried out PSIM circuit simulation verifications.Non-contact transformer is edge expanding type noncontact transformation employed in this example Shown in device, such as Figure 11 (a), the present disclosure applies equally to other transformer device structures.Following table becomes for the noncontact that this test is used The design parameter that former secondary self-induction, mutual inductance and the coefficient of coup of depressor change with air gap.
Table 1：Non-contact transformer (F3) parameter
Table 2：Non-contact transformer (S3) parameter
Branch road 1, the specific former secondary compensating electric capacity value of branch road 2 see the table below 3.
Table 3：Resonant element parameter
The compensating electric capacity of branch road 1 and branch road 2 is calculated based on formula (3) under the conditions of 10cm air gaps and obtained.Electricity is inputted in direct current Press in the case of being fixed for 400V, change the air-gap separation between transformer primary secondary, the output of noncontact associating power supply circuit Output voltage is with coefficient of coup change curve such as Figure 11 (b), Figure 11 (c) Suo Shi under the conditions of magnitude of voltage is shown in Table 4, different loads.From In it can be seen that voltage source proposed by the invention can effectively improve air with current source complex incentive noncontact translation circuit The degree of stability of contactless power supply system output characteristics when gap changes, while keeping output voltage characteristic under the conditions of varying load Output stability.
Table 4 (a)：Heavy load (Rmin) under the conditions of two output voltage and total output voltage
Table 4 (a)：Small load (Rmax) under the conditions of two output voltage and total output voltage
Test case two：
For the feasibility of the checking present invention, using voltage source shown in Figure 10 and current source complex incentive noncontact translation circuit as Example, has carried out simulating, verifying.Non-contact transformer used is primary side double winding, secondary simplex winding noncontact transformation in this example Device, the symmetrical coiling of primary side two-way non-contact transformer, two-way primary side winding self-induction is equal, phase approximate with the mutual inductance value of vice-side winding Deng.The tool that former secondary self-induction, mutual inductance and the coefficient of coup for the non-contact transformer that table 5 is used for this test change with air gap Body parameter.
Table 5：Non-contact transformer (3) parameter
Branch road 1, the specific former secondary compensating electric capacity value of branch road 2, input source etc. see the table below.
Table 6：Compensating electric capacity capacitance and input source
180 ° of input ac voltage source forcing and input AC current source phase difference, working frequency is 91kHz.In varying load Under the conditions of change air-gap separation between transformer primary secondary, the output voltage of noncontact associating power supply circuit is as shown in figure 12. It can be seen that noncontact is supplied when noncontact associating power supply circuit provided by the present invention can effectively improve big air gap change The degree of stability of electric system output characteristics.Can in the Sofe Switch of input current source correspondence inverter, practical application in order to realize So that input impedance is adjusted into weak perception in current source input side series capacitance and the method for small resistance.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims (6)

1. a kind of voltage source and current source complex incentive noncontact translation circuit, it is characterised in that：Including the first noncontact conversion Module branch road and the second noncontact conversion module branch road；First noncontact conversion module branch, first input source of route (F1), First primary side compensation network (F2), the first non-contact transformer (F3), the first secondary compensation network (F4), the first rectification circuit (F5_1), the first filter network (F5_2) is sequentially connected in series composition, and the second noncontact conversion module branch route second is defeated Enter source (S1), the second primary side compensation network (S2), the second non-contact transformer (S3), the second secondary compensation network (S4), second Rectification circuit (S5_1), the second filter network (S5_2) are sequentially connected in series, the output of first filter network (F5_2) and The output of second filter network (S5_2) is connected in series or in parallel to be followed by load (5_3) two ends；For first noncontact Transformer (F3) and, the second non-contact transformer (S3), flow into wherein all the way the electric current of non-contact transformer primary side winding for perseverance Quantitative, the electric current for flowing into another road non-contact transformer primary side winding is the variable quantity with load and coefficient of coup change.
2. a kind of voltage source according to claim 1 and current source complex incentive noncontact translation circuit, it is characterised in that： Wherein the constant current of non-contact transformer primary side winding is realized by way of LC converting networks or control circuit all the way for inflow.
3. a kind of voltage source according to claim 1 and current source complex incentive noncontact translation circuit, it is characterised in that： First input source (F1) and the second input source (S1) are AC constant voltage source or AC constant-current source, or direct current input source adds inversion Circuit transformations are obtained.
4. a kind of voltage source according to claim 1 and current source complex incentive noncontact translation circuit, it is characterised in that： The first primary side compensation network (F2) and the second primary side compensation network (S2), the compensation of the first secondary in two-way noncontact conversion module Network (F4) and the second secondary compensation network (S4) be Series Sheet capacitance compensation, single capacitor compensation in parallel, connection in series-parallel capacitance compensation, And the group of series capacitor compensation, series/parallel LC network building outs, the compensation of LCL forms, the compensation of LCC forms, or any of the above structure Conjunction form.
5. a kind of voltage source according to claim 1 and current source complex incentive noncontact translation circuit, it is characterised in that： The secondary circuit of two-way noncontact conversion module is shared, and forms the non-contact transformer structure of primary side double winding secondary simplex winding.
6. a kind of voltage source and current source complex incentive noncontact translation circuit according to claim 1 or 5, its feature exist In：The winding construction of first non-contact transformer (F3) and the second non-contact transformer (S3) is single coil structure, twin coil knot The structure of structure or multi-thread coil structures, primary side magnetic core and/or secondary magnetic core is U-shaped, I types, both sides column bottom along side to external expansion Edge expansion type, the combination of cross or above-mentioned shape.
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CN107565702A (en) * 2017-09-27 2018-01-09 哈尔滨工业大学 A kind of static simulation method of the dynamic radio power supply equivalent based on receiving terminal open-circuit voltage
CN108233720A (en) * 2018-03-13 2018-06-29 厦门大学 Fault tolerant operation full-bridge LLC resonant converter based on half bridge redundancy
WO2020102942A1 (en) * 2018-11-19 2020-05-28 深圳迈瑞生物医疗电子股份有限公司 Power supply device and ultrasonic trolley
CN110386008A (en) * 2019-06-27 2019-10-29 中国电力科学研究院有限公司 A kind of electric car wireless charging method and system based on double transmitting-bis- pickup modes
CN110450656A (en) * 2019-07-08 2019-11-15 浙江大学 A kind of electric car wireless charging closed-loop control system based on differential inductance
CN110365120A (en) * 2019-07-24 2019-10-22 南京航空航天大学 A kind of non-contact electric energy transmission device from primary side identified parameters
CN115534715A (en) * 2022-11-02 2022-12-30 华东交通大学 Constant-current constant-voltage IPT system capable of configuring charging voltage and charging current
CN115534715B (en) * 2022-11-02 2023-08-29 华东交通大学 Constant-current constant-voltage IPT system capable of configuring charging voltage and charging current
CN115864674A (en) * 2022-11-22 2023-03-28 中国人民解放军海军工程大学 Wireless power supply system and input voltage-sharing and output constant voltage cooperative control method thereof
CN115864674B (en) * 2022-11-22 2023-12-15 中国人民解放军海军工程大学 Wireless power supply system and input voltage equalizing and output constant voltage cooperative control method thereof
CN116599341A (en) * 2023-07-17 2023-08-15 中国人民解放军海军工程大学 Method, equipment and medium for obtaining equivalent load of LCC-S type IPT system rectifier
CN116599341B (en) * 2023-07-17 2023-10-27 中国人民解放军海军工程大学 Method, equipment and medium for obtaining equivalent load of LCC-S type IPT system rectifier

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