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Switching apparatus and control method based on multi-transmission resonant wireless power transmission system

A technology of wireless power transmission and switching devices, which is applied to circuit devices, electrical components, etc., and can solve problems such as the difficulty in obtaining the coupling coefficient online

Active Publication Date: 2018-05-08
XIANGTAN UNIV
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Problems solved by technology

[0002] In the multi-transmitter resonant wireless power transmission system, when there is a lateral offset between the receiving coil and the transmitting coil, the anti-deviation of the system can be improved by adaptive switching of multiple transmitting coils; however, the existing switching control methods are only based on The relationship between the coupling coefficient and the transmission efficiency deduces the switching criterion between the transmitting coils, but it is difficult to obtain the coupling coefficient online in engineering practice; therefore, the switching criterion and control method for the multi-transmitter resonant wireless power transmission system need further research and improvement

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  • Switching apparatus and control method based on multi-transmission resonant wireless power transmission system
  • Switching apparatus and control method based on multi-transmission resonant wireless power transmission system
  • Switching apparatus and control method based on multi-transmission resonant wireless power transmission system

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] Such as figure 1 As shown, it is a circuit diagram of a multi-transmitter resonant wireless power transmission system device, including a DC voltage source, a filter capacitor, an inverter, a transmitter compensation capacitor, a transmitter coil and a receiver coil, a switch for a transmitter coil, a receiver compensation capacitor, and a rectifier , a load, and a control circuit; wherein the switching device includes multiple transmitting coils and a switch, a compensation capacitor, and a control circuit. In the control circuit, the current sensor is connected to the conditioning circuit, the conditioning circuit is connected to the A / D conversion circuit, and the A / D conversion circuit It is connected with the FPGA controller, the FPGA controller is connected with the level conversion circuit and the drive circuit, the drive circuit is connec...

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Abstract

The invention provides a switching apparatus and a control method based on a multi-emission resonant wireless power transmission system. The switching apparatus comprises multiple transmission coils,change-over switches, compensation capacitors and a control circuit, a current sensor in the control circuit is connected with a conditioning circuit, the conditioning circuit is connected with an A / Dconverting circuit, the A / D converting circuit is connected with an FPGA controller, the FPGA controller is connected with a level converting circuit and a driving circuit, the driving circuit is connected with a switching device of a full-bridge inverter, and the level converting circuit is connected with a relay array. The control method includes a switching criterion and a control algorithm, in the control algorithm, switch group control signals enabling the system to be in an optimal work mode are accurately output through detection of currents of transmitting terminals in different workmodes according to the switching criterion, adaptive switching in a power supply region is realized, and the problem of efficiency reduction caused by lateral deviation of coils is solved.

Description

technical field [0001] The invention relates to the field of wireless power transmission, in particular to a switching device and a control method based on a multi-transmission resonant wireless power transmission system. Background technique [0002] In the multi-transmitter resonant wireless power transmission system, when there is a lateral offset between the receiving coil and the transmitting coil, the anti-deviation of the system can be improved by adaptive switching of multiple transmitting coils; however, the existing switching control methods are only based on The relationship between the coupling coefficient and the transmission efficiency deduces the switching criterion between the transmitting coils, but it is difficult to obtain the coupling coefficient online in engineering practice; therefore, the switching criterion and control method for the multi-transmitting resonant wireless power transmission system need further research and improvement . Contents of t...

Claims

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Application Information

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IPC IPC(8): H02J50/12H02J50/40
CPCH02J50/12H02J50/40
Inventor 谭平安彭涛曹赛琪叶良伟谭廷玉
Owner XIANGTAN UNIV
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