CN104539185A - High-frequency power source of resonant coupling type wireless power transmission device - Google Patents

High-frequency power source of resonant coupling type wireless power transmission device Download PDF

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Publication number
CN104539185A
CN104539185A CN201510015042.7A CN201510015042A CN104539185A CN 104539185 A CN104539185 A CN 104539185A CN 201510015042 A CN201510015042 A CN 201510015042A CN 104539185 A CN104539185 A CN 104539185A
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CN
China
Prior art keywords
mosfet pipe
switch mosfet
resonance
transmitting coil
power source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201510015042.7A
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Chinese (zh)
Other versions
CN104539185B (en
Inventor
肖文勋
张波
刘红伟
郭上华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
South China University of Technology SCUT
Zhuhai XJ Electric Co Ltd
Original Assignee
South China University of Technology SCUT
Zhuhai XJ Electric Co Ltd
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Publication date
Application filed by South China University of Technology SCUT, Zhuhai XJ Electric Co Ltd filed Critical South China University of Technology SCUT
Priority to CN201510015042.7A priority Critical patent/CN104539185B/en
Publication of CN104539185A publication Critical patent/CN104539185A/en
Application granted granted Critical
Publication of CN104539185B publication Critical patent/CN104539185B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • H02M1/0048—Circuits or arrangements for reducing losses
    • H02M1/0054—Transistor switching losses
    • H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Inverter Devices (AREA)

Abstract

The invention provides a high-frequency power source of a resonant coupling type wireless power transmission device. The high-frequency power source is formed by a switching tube, a snubber capacitor, a transmitting coil, a tuning capacitor and an energy storage filter inductor, high-frequency sine alternating currents can be output, soft switching of the switching tube can be achieved, and efficiency of the high-frequency power source is improved. The high-frequency power source is simple in structure and low in cost and is provided with a small number of elements, and the loss is close to zero, so that the high-frequency power source is very suitable for serving as an alternating current excitation source of a transmitting coil of the wireless power transmission device.

Description

The high frequency power source of resonance manifold type wireless electric energy transmission device
Technical field
The invention belongs to wireless power transmission application, relate to a kind of circuit of high frequency power source.
Background technology
Resonance manifold type wireless power transmission technical requirement transmitting coil and receiving coil are operated in high frequency state, its frequency reaches more than 1 megahertz, therefore for transmitting coil provides the power source of alternating current also will be operated in high frequency state, and the sinusoidal ac that more than 1 megahertz can be provided is wanted.Existing inverter circuit is as half-bridge inversion circuit, full bridge inverter, and when they are operated in so high frequency, the switching loss of its switching tube and the loss of filter circuit will become very high.And the switching tube that uses of these circuit and components and parts more, during as high frequency power source, circuit compared with complicated, cost compared with high, loss is large.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, simplify circuit structure, a kind of high frequency power source being applicable to resonance manifold type wireless electric energy transmission device is provided.The present invention both can realize the Sofe Switch of switching tube, and switching loss, close to zero, can provide high frequency sinusoidal alternating current for transmitting coil again.
The present invention is achieved through the following technical solutions:
The high frequency power source of resonance manifold type wireless electric energy transmission device, it comprises switch mosfet pipe, buffer capacitor, transmitting coil, the first tuning capacitance, energy storage filter inductance, receiving coil and second tune electric capacity; The drain electrode of switch mosfet pipe is connected with one end of buffer capacitor, and then is connected with one end of transmitting coil; The source electrode of switch mosfet pipe is connected with the other end of buffer capacitor, and then is connected with one end of the first tuning capacitance; The other end of the first tuning capacitance is connected with the other end of transmitting coil; The drain electrode of switch mosfet pipe is connected with one end of energy storage filter inductance; The other end of energy storage filter inductance is connected with the positive pole of direct voltage source; The source electrode of switch mosfet pipe is connected with the negative pole of direct voltage source; One end of receiving coil is connected with one end of second tune electric capacity, and the other end of receiving coil is connected with one end of load, and the other end of second tune electric capacity is connected with the other end of load; The energy that high frequency power source exports passes to load by the resonance coupling of transmitting coil and receiving coil.
In the high frequency power source of above-mentioned resonance manifold type wireless electric energy transmission device, during the conducting of switch mosfet pipe, transmitting coil and the first tuning capacitance resonance; Switch mosfet pipe disconnects moment, and the voltage rise of buffer capacitor buffering switch mosfet pipe, makes switch mosfet pipe realize near zero voltage and turn off; At switch mosfet pipe blocking interval, transmitting coil, the first tuning capacitance and buffer capacitor generation resonance, take the electric charge of buffer capacitor away, make buffer capacitor drop to zero before switch mosfet pipe is opened, thus it is open-minded to make switch mosfet pipe realize no-voltage.
In the high frequency power source of above-mentioned resonance manifold type wireless electric energy transmission device,
In order to enable transmitting coil, transferring energy is to receiving coil expeditiously, and it is open-minded to make switch mosfet pipe realize no-voltage, frequency f when transmitting coil and the first tuning capacitance resonance 1, frequency f when transmitting coil, the first tuning capacitance and buffer capacitor resonance 2, frequency f when receiving coil and second tune capacitor resonance 3, the switching frequency f of switch mosfet pipe smeet following relation: f 1<f 3=f s<f 2.
Compared with prior art, tool of the present invention has the following advantages and technique effect:
Circuit structure of the present invention is simple, and cost is low.This high frequency power source is powered by direct voltage source, by the turn-on and turn-off of switching tube, direct voltage is chopped into high-frequency impulse ripple, and pass through LC resonance in the conduction period of switching tube, by LCC resonance, high-frequency impulse ripple is filtered into high frequency sinusoidal alternating current with the blocking interval at switching tube, this sinusoidal ac passes to load by the resonance coupling of transmitting coil and receiving coil, realizes the wireless transmission of energy.Realize near zero voltage at switching tube shutdown moment by the cushioning effect of electric capacity to turn off, and take the electric charge of paralleled power switches electric capacity at switching tube blocking interval away by LCC resonance, switching tube is made to be clamped at zero potential before opening, thus it is open-minded to realize no-voltage, therefore switching tube can realize Sofe Switch, make switching loss be down to zero, be suitable as very much the ac-excited source of the transmitting coil of wireless electric energy transmission device.
Accompanying drawing explanation
Fig. 1 is the high frequency power source circuit diagram of resonance manifold type wireless electric energy transmission device.
Fig. 2 is main electrical current, voltage oscillogram in embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the invention is further described, but enforcement of the present invention and protection are not limited thereto.
Circuit is the high frequency power source circuit diagram of resonance manifold type wireless electric energy transmission device as shown in Figure 1, and this circuit comprises switch mosfet pipe S 1, buffer capacitor C 1, transmitting coil Ls, the first tuning capacitance C2, energy storage filter inductance L 1, receiving coil L dwith second tune electric capacity C3.It is characterized in that switch mosfet pipe S 1drain electrode and buffer capacitor C 1one end connect, and then to be connected with one end of transmitting coil Ls.Switch mosfet pipe S 1source electrode and buffer capacitor C 1the other end connect, and then to be connected with one end of the first tuning capacitance C2.The other end of the first tuning capacitance C2 is connected with the other end of transmitting coil Ls.Switch mosfet pipe S 1drain electrode and energy storage filter inductance L 1one end connect.Energy storage filter inductance L 1the other end be connected with the positive pole of direct voltage source Vs.Switch mosfet pipe S 1source electrode be connected with the negative pole of direct voltage source Vs.Receiving coil L done end be connected with one end of second tune electric capacity C3, receiving coil L dthe other end and load R lone end connect, the other end of second tune electric capacity C3 and load R lthe other end connect.The energy that high frequency power source exports is by transmitting coil Ls and receiving coil L dresonance coupling pass to load R l.
Main electrical current as shown in Figure 2 during circuit working of the present invention, voltage oscillogram, wherein u pswitch mosfet pipe S 1driving voltage, u c1buffer capacitor C 1voltage, i sthe electric current of transmitting coil Ls, i dthe voltage of the first tuning capacitance C2.As switch mosfet pipe S 1during conducting, transmitting coil Ls and the first tuning capacitance C2 resonance; Switch mosfet pipe S 1disconnect moment, buffer capacitor C 1buffering switch mosfet pipe S 1voltage rise, make switch mosfet pipe S 1realize near zero voltage to turn off; At switch mosfet pipe S 1blocking interval, transmitting coil Ls, the first tuning capacitance C2 and buffer capacitor C 1there is resonance, take buffer capacitor C away 1electric charge, make buffer capacitor C 1at switch mosfet pipe S 1drop to zero before opening, thus make switch mosfet pipe S 1realize no-voltage open-minded.In order to enable transmitting coil expeditiously transferring energy to receiving coil, and make switch mosfet pipe S 1realize no-voltage open-minded, frequency f when transmitting coil Ls and the first tuning capacitance C2 resonance 1, transmitting coil Ls, the first tuning capacitance C2 and buffer capacitor C 1frequency f during resonance 2, receiving coil L dwith frequency f during second tune electric capacity C3 resonance 3, switch mosfet pipe S 1switching frequency f smeet following relation: f 1<f 3=f s<f 2, and f 3more close to f 1the efficiency of energy wireless transmission is higher.
For ensureing buffer capacitor C 1at switch mosfet pipe S 1zero is dropped to, buffer capacitor C before opening 1capacitance calculated by following formula:
C 1 = 1 2 &pi; f s R &times; 5.447 - - - ( 1 )
Wherein R is the equivalent series resistance of transmitting coil Ls and the first tuning capacitance C2 and the resistance R of receiving coil dbe coupled to the equivalent resistance R of transmitting coil dSsum, and R dreceiving coil L dwith equivalent series resistance and the load R of second tune electric capacity C3 lsum.
Because the present invention only uses a switching tube, a buffer capacitor and an energy storage filter inductance, and just can construct high frequency power source in conjunction with the tuning capacitance of transmitting coil and transmitting coil, the structure of circuit is simple, the components and parts used are less, cost is low, and loss is close to zero, be suitable as very much the ac-excited source of the transmitting coil of wireless electric energy transmission device.

Claims (3)

1. the high frequency power source of resonance manifold type wireless electric energy transmission device, is characterized in that comprising switch mosfet pipe (S 1), buffer capacitor (C 1), transmitting coil (Ls), the first tuning capacitance (C2), energy storage filter inductance (L 1), receiving coil (L d) and second tune electric capacity (C3); Switch mosfet pipe (S 1) drain electrode and buffer capacitor (C 1) one end connect, and then to be connected with one end of transmitting coil (Ls); Switch mosfet pipe (S 1) source electrode and buffer capacitor (C 1) the other end connect, and then to be connected with one end of the first tuning capacitance (C2); The other end of the first tuning capacitance (C2) is connected with the other end of transmitting coil (Ls); Switch mosfet pipe (S 1) drain electrode and energy storage filter inductance (L 1) one end connect; Energy storage filter inductance (L 1) the other end be connected with the positive pole of direct voltage source (Vs); Switch mosfet pipe (S 1) source electrode be connected with the negative pole of direct voltage source (Vs); Receiving coil (L d) one end be connected with one end of second tune electric capacity (C3), receiving coil (L d) the other end and load (R l) one end connect, the other end of second tune electric capacity (C3) and load (R l) the other end connect; The energy that high frequency power source exports is by transmitting coil (Ls) and receiving coil (L d) resonance coupling pass to load (R l).
2. the high frequency power source of a kind of resonance manifold type wireless electric energy transmission device as claimed in claim 1, is characterized in that, switch mosfet pipe (S 1) conducting time, transmitting coil (Ls) and the first tuning capacitance (C2) resonance; Switch mosfet pipe (S 1) disconnect moment, buffer capacitor (C 1) buffering switch mosfet pipe (S 1) voltage rise, make switch mosfet pipe (S 1) realize near zero voltage shutoff; At switch mosfet pipe (S 1) blocking interval, transmitting coil (Ls), the first tuning capacitance (C2) and buffer capacitor (C 1) there is resonance, take buffer capacitor (C away 1) electric charge, make buffer capacitor (C 1) at switch mosfet pipe (S 1) open before drop to zero, thus make switch mosfet pipe (S 1) to realize no-voltage open-minded.
3. the high frequency power source of a kind of resonance manifold type wireless electric energy transmission device as claimed in claim 1, is characterized in that, frequency when transmitting coil (Ls) and the first tuning capacitance (C2) resonance f 1, transmitting coil (Ls), the first tuning capacitance (C2) and buffer capacitor (C 1) resonance time frequency f 2, receiving coil (L d) and second tune electric capacity (C3) resonance time frequency f 3, switch mosfet pipe (S 1) switching frequency f smeet following relation: f 1< f 3= f s< f 2.
CN201510015042.7A 2015-01-13 2015-01-13 The high frequency power source of resonance manifold type wireless electric energy transmission device Expired - Fee Related CN104539185B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108123553A (en) * 2018-01-15 2018-06-05 华南理工大学 A kind of high-frequency high-power wireless power transmission systems
CN109808521A (en) * 2019-02-12 2019-05-28 国网黑龙江省电力有限公司电力科学研究院 A kind of electric car wireless charging teleinformation variable frequency drive

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1308408A (en) * 2000-02-03 2001-08-15 索尼株式会社 High voltage stabilizer
US20060164869A1 (en) * 2005-01-21 2006-07-27 Tdk Corporation Inverter
JP2006271027A (en) * 2005-03-22 2006-10-05 Sony Corp Switching power circuit
JP2007267516A (en) * 2006-03-29 2007-10-11 Sony Corp Switching power supply circuit
CN204376748U (en) * 2015-01-13 2015-06-03 华南理工大学 The high frequency power source of resonance manifold type wireless electric energy transmission device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1308408A (en) * 2000-02-03 2001-08-15 索尼株式会社 High voltage stabilizer
US20060164869A1 (en) * 2005-01-21 2006-07-27 Tdk Corporation Inverter
JP2006271027A (en) * 2005-03-22 2006-10-05 Sony Corp Switching power circuit
JP2007267516A (en) * 2006-03-29 2007-10-11 Sony Corp Switching power supply circuit
CN204376748U (en) * 2015-01-13 2015-06-03 华南理工大学 The high frequency power source of resonance manifold type wireless electric energy transmission device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
张波 等: "两个负载接收线圈的谐振耦合无线输电系统特性分析", 《华南理工大学学报（自然科学版）》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108123553A (en) * 2018-01-15 2018-06-05 华南理工大学 A kind of high-frequency high-power wireless power transmission systems
CN108123553B (en) * 2018-01-15 2023-08-22 华南理工大学 High-frequency high-power wireless power transmission system
CN109808521A (en) * 2019-02-12 2019-05-28 国网黑龙江省电力有限公司电力科学研究院 A kind of electric car wireless charging teleinformation variable frequency drive

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Granted publication date: 20170829

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