CN203398993U - Full-bridge resonant transformation circuit of contactless power transmission - Google Patents
Full-bridge resonant transformation circuit of contactless power transmission Download PDFInfo
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- CN203398993U CN203398993U CN201320391892.3U CN201320391892U CN203398993U CN 203398993 U CN203398993 U CN 203398993U CN 201320391892 U CN201320391892 U CN 201320391892U CN 203398993 U CN203398993 U CN 203398993U
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- semiconductor
- oxide
- metal
- diode
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Abstract
The utility model provides a full-bridge resonant transformation circuit of contactless power transmission. The full-bridge resonant transformation circuit of the contactless power transmission includes a loose coupling transformer T1, an MOS tube Q1, an MOS tube Q2, an MOS tube Q3, an MOS tube Q4, a diode D1, a diode D2, a diode D3, a diode D4, a resonant capacitor Cs, and a power supply DC. In the utility model, the resonant capacitor and the primary inductor are connected in series, and the zero current switching-on and the zero voltage switching-off of the MOS tubes of the full-bridge resonant transformation circuit are used, so that the voltage spikes during the switching-on and the switching-off are reduced, the efficiency of the power supply is improved, the loss is decreased, and the electromagnetic interference in the switching process of the device is reduced. The switching frequency and the efficiency are improved for the resonant transformation circuit.
Description
Technical field
The utility model relates to a kind of full-bridge resonant transform circuit of transmitting non-contact electric energy, belongs to power conversion technology field.
Background technology
High-frequency inversion is partly one of core component of non-contact electric energy transmission system, and output high voltage or electric current exert an influence to the transmittability of non-contact electric energy transmission system and efficiency of transmission.Most non-contact electric energy transmission system produces high frequency voltage (electric current) and conventionally adopts SPWM mode, and such control mode exists some shortcomings:
The first,, in order to obtain the sine wave that sinusoidal degree is higher, suppose that switching frequency is 10 times of sine wave freuqency, in order to obtain the sine wave of a 30-100kHz, switching frequency is at least 300kHz, if obtain higher sine wave, switching frequency is also higher, and the switching loss of device is increased.
The second, SPWM converter technique can not be according to the difference of load and switching frequency, can realize zero-current switching and no-voltage is open-minded.
Utility model content
The purpose of this utility model is to overcome prior art deficiency, provides
Technical solution of the present utility model: a kind of full-bridge resonant transform circuit of transmitting non-contact electric energy, comprise loosely coupled transformer T1, metal-oxide-semiconductor Q1, Q2, Q3, Q4, diode D1, D2, D3, D4, resonant capacitance Cs and power supply DC, the drain electrode of metal-oxide-semiconductor Q1 is connected with the positive pole of power supply DC, the source electrode of metal-oxide-semiconductor Q2 is connected with the negative pole of power supply DC, the source electrode of metal-oxide-semiconductor Q1 is connected with the drain electrode of metal-oxide-semiconductor Q2, the source electrode of metal-oxide-semiconductor Q3 is connected with the drain electrode of metal-oxide-semiconductor Q4, loosely coupled transformer T1Yuan Bian one end is connected to the link of metal-oxide-semiconductor Q3 and metal-oxide-semiconductor Q4, the other end serial connection resonant capacitance Cs on loosely coupled transformer T1Yuan limit is connected to the link of metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2, the secondary of loosely coupled transformer T1 is connected with rectification circuit, the drain electrode of metal-oxide-semiconductor Q1 is connected with the positive pole of diode D1, the source electrode of metal-oxide-semiconductor Q1 is connected with the negative pole of diode D1, the drain electrode of metal-oxide-semiconductor Q2 is connected with the positive pole of diode D2, the source electrode of metal-oxide-semiconductor Q2 is connected with the negative pole of diode D2, the drain electrode of metal-oxide-semiconductor Q3 is connected with the positive pole of diode D3, the source electrode of metal-oxide-semiconductor Q3 is connected with the negative pole of diode D3, the drain electrode of metal-oxide-semiconductor Q4 is connected with the positive pole of diode D4, the source electrode of metal-oxide-semiconductor Q4 is connected with the negative pole of diode D4.
The utility model beneficial effect compared with prior art:
(1) the utility model is by the mode of resonant capacitance He Yuan limit inductance series connection, utilize zero current passing and the no-voltage of the metal-oxide-semiconductor of full-bridge controlled resonant converter to turn-off, due to voltage spikes while having reduced to turn on and off, the efficiency of the power supply improving, reduced loss, reduce the electromagnetic interference producing in devices switch process, for resonant transform circuit has improved switching frequency, improved efficiency;
(2) circuit that the utility model adopts is simple, has reduced due to voltage spikes when switching tube turns on and off, and has improved efficiency, has reduced loss, and working stability is reliable, and failure rate is low is conducive to promote.
Accompanying drawing explanation
Fig. 1 is the utility model schematic block circuit diagram;
Fig. 2 is the utility model inverter voltage and resonance current waveform figure.
Embodiment
Below in conjunction with Fig. 1 and instantiation, the utility model is elaborated.
In the power conversion of the utility model in transmitting non-contact electric energy, obstructed according to load and switching frequency, zero-current switching can be realized and no-voltage is open-minded, frequency is much smaller than the required frequency of SPWM, and switching loss is little, and voltage (electric current) waveform approaches sinusoidal, EMI is little, make whole system simple, disturb littlely, working stability is reliable.
The utility model as shown in Figure 1, comprise loosely coupled transformer T1, metal-oxide-semiconductor Q1, Q2, Q3, Q4, diode D1, D2, D3, D4, resonant capacitance Cs and power supply DC, the drain electrode of metal-oxide-semiconductor Q1 is connected with the positive pole of power supply DC, the source electrode of metal-oxide-semiconductor Q2 is connected with the negative pole of power supply DC, the source electrode of metal-oxide-semiconductor Q1 is connected with the drain electrode of metal-oxide-semiconductor Q2, the source electrode of metal-oxide-semiconductor Q3 is connected with the drain electrode of metal-oxide-semiconductor Q4, loosely coupled transformer T1Yuan Bian one end is connected to the link of metal-oxide-semiconductor Q3 and metal-oxide-semiconductor Q4, the other end serial connection resonant capacitance Cs on loosely coupled transformer T1Yuan limit is connected to the link of metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2, the secondary of loosely coupled transformer T1 connects rectification circuit, the drain electrode of metal-oxide-semiconductor Q1 is connected with the positive pole of diode D1, the source electrode of metal-oxide-semiconductor Q1 is connected with the negative pole of diode D1, the drain electrode of metal-oxide-semiconductor Q2 is connected with the positive pole of diode D2, the source electrode of metal-oxide-semiconductor Q2 is connected with the negative pole of diode D2, the drain electrode of metal-oxide-semiconductor Q3 is connected with the positive pole of diode D3, the source electrode of metal-oxide-semiconductor Q3 is connected with the negative pole of diode D3, the drain electrode of metal-oxide-semiconductor Q4 is connected with the positive pole of diode D4, the source electrode of metal-oxide-semiconductor Q4 is connected with the negative pole of diode D4.
Diode D5, D6, D7, D8, for rectification, and filter capacitor C2, resistance R e form filter circuit.
As shown in Figure 2, workflow of the present utility model is:
(1) (t
0-t
1) constantly
Q2, Q3 turn-offs, Q1, Q4 does not also have conducting, resonance current I
d1, I
d4by the body diode afterflow of Q1 and Q4.In this stage, the energy storage of resonant inductance part feedback power, a part is given capacitor charging U in addition
cp, resonant capacitance voltage negative is to rising.
(2) (t
1-t
2) constantly
Q1, Q4 conducting, but be not to have at once forward current to flow through, due to resonance current I
premain the body diode that flows through switch, so switching tube has been realized no-voltage and zero current turning-on.
(3) (t
2-t
3) constantly
Q1, Q4 maintains conducting, and resonance current becomes forward by negative sense, and electric capacity reverse charging discharges electric energy, and current value increases, inductive energy storage.
(4) (t
3-t
4) constantly
Q1, Q4 maintains conducting, and resonance current reduces, and inductance discharges electric energy, and electric capacity both end voltage is by just bearing change and constantly increasing.
(5) (t
4-t
5) constantly
Q1, Q4 turn-offs, Q2, Q4 does not also have conducting, and resonance current is by Q2, the body diode afterflow of Q3.In this stage, the energy storage of resonant inductance part feedback power, a part is given capacitor charging in addition, and resonant capacitance voltage continues forward and raises.
(6) (t
5-t
6) constantly
Q2, Q3 conducting, resonance current is still by the body diode of switching tube, so Q2, Q3 has also realized zero current turning-on, resonance current is reduced to zero, namely extremely zero by the current reduction of body diode.Meanwhile, the voltage in series capacitance has also reached forward maximum.
(7) (t
6-t
7) constantly
Q2, Q3 maintains conducting, and resonance current becomes negative sense from forward, and electric capacity reverse charging discharges electric energy, and current value increases, inductive energy storage.The magnitude of voltage at electric capacity two ends reduces to zero, and resonance current reaches maximum.
(8) (t
7-t
8) constantly
Q2, Q3 turn-offs, Q1, Q4 does not also have conducting, resonance current I
d1and I
d4by the body diode afterflow of Q1 and Q4.In this stage, get back to (t
0-t
1) constantly, the energy storage of resonant inductance part feedback power, a part is given capacitor charging in addition, and resonant capacitance voltage negative is to rising.
In the time of can finding out power work from waveform, full-bridge controlled resonant converter is operated in soft on off state.
The unspecified part of the utility model is known to the skilled person technology.
Claims (1)
1. the full-bridge resonant transform circuit of a transmitting non-contact electric energy, it is characterized in that: comprise loosely coupled transformer T1, metal-oxide-semiconductor Q1, Q2, Q3, Q4, diode D1, D2, D3, D4, resonant capacitance Cs and power supply DC, the drain electrode of metal-oxide-semiconductor Q1 is connected with the positive pole of power supply DC, the source electrode of metal-oxide-semiconductor Q2 is connected with the negative pole of power supply DC, the source electrode of metal-oxide-semiconductor Q1 is connected with the drain electrode of metal-oxide-semiconductor Q2, the source electrode of metal-oxide-semiconductor Q3 is connected with the drain electrode of metal-oxide-semiconductor Q4, loosely coupled transformer T1Yuan Bian one end is connected to the link of metal-oxide-semiconductor Q3 and metal-oxide-semiconductor Q4, the other end serial connection resonant capacitance Cs on loosely coupled transformer T1Yuan limit is connected to the link of metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2, the secondary of loosely coupled transformer T1 is connected with rectification circuit, the drain electrode of metal-oxide-semiconductor Q1 is connected with the positive pole of diode D1, the source electrode of metal-oxide-semiconductor Q1 is connected with the negative pole of diode D1, the drain electrode of metal-oxide-semiconductor Q2 is connected with the positive pole of diode D2, the source electrode of metal-oxide-semiconductor Q2 is connected with the negative pole of diode D2, the drain electrode of metal-oxide-semiconductor Q3 is connected with the positive pole of diode D3, the source electrode of metal-oxide-semiconductor Q3 is connected with the negative pole of diode D3, the drain electrode of metal-oxide-semiconductor Q4 is connected with the positive pole of diode D4, the source electrode of metal-oxide-semiconductor Q4 is connected with the negative pole of diode D4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320391892.3U CN203398993U (en) | 2013-07-03 | 2013-07-03 | Full-bridge resonant transformation circuit of contactless power transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320391892.3U CN203398993U (en) | 2013-07-03 | 2013-07-03 | Full-bridge resonant transformation circuit of contactless power transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203398993U true CN203398993U (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320391892.3U Expired - Lifetime CN203398993U (en) | 2013-07-03 | 2013-07-03 | Full-bridge resonant transformation circuit of contactless power transmission |
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| CN (1) | CN203398993U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106240395A (en) * | 2016-08-29 | 2016-12-21 | 重庆大学 | The sectional guide rail soft handover method of electric automobile wireless power supply system |
| US10003267B1 (en) | 2016-12-19 | 2018-06-19 | Analog Devices Global | Isolated DC-DC converter with an H-bridge circuit |
| CN108879994A (en) * | 2018-07-27 | 2018-11-23 | 西安电子科技大学 | Self-resonance formula wireless power supply |
-
2013
- 2013-07-03 CN CN201320391892.3U patent/CN203398993U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106240395A (en) * | 2016-08-29 | 2016-12-21 | 重庆大学 | The sectional guide rail soft handover method of electric automobile wireless power supply system |
| US10003267B1 (en) | 2016-12-19 | 2018-06-19 | Analog Devices Global | Isolated DC-DC converter with an H-bridge circuit |
| CN108879994A (en) * | 2018-07-27 | 2018-11-23 | 西安电子科技大学 | Self-resonance formula wireless power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140115 |