Self-starting method of bi-directional wireless power transmission system based on detection of searching coil

A two-way radio and detection coil technology, applied in electrical components, circuit devices, etc., can solve the problems of increasing the cost and complexity of the system, and achieve the effects of convenient control, high reliability and little malfunction.

Active Publication Date: 2016-02-17
SOUTHEAST UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

At present, most of them are realized through wireless communication between the 1-side and 2-side controllers, which increases the cost of the system and the complexity of the design to a certain extent.

Method used

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  • Self-starting method of bi-directional wireless power transmission system based on detection of searching coil
  • Self-starting method of bi-directional wireless power transmission system based on detection of searching coil
  • Self-starting method of bi-directional wireless power transmission system based on detection of searching coil

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Embodiment Construction

[0024] The present invention will be further explained below in conjunction with the drawings.

[0025] A self-starting method for two-way wireless power transmission system based on detection coil detection, the structure of the two-way wireless power transmission system is as follows figure 1 As shown, the topologically symmetrical side 1 and side 2 are included. Side 1 includes battery 1, converter 1, LCL resonant network, and controller 1; converter 1 is a single-phase full-bridge reversible rectifier connected to battery 1 and LCL resonant network; LCL resonant network includes series filter inductor L m , Shunt capacitance C 1 And coil L 1 . Side 2 includes battery 2, converter 2, controller 2, LCL type resonant network; converter 2 is a single-phase full-bridge reversible rectifier, the single-phase full-bridge reversible rectifier is connected to battery 2 and LCL type resonant network; LCL type resonant network includes Series filter inductor L n , Shunt capacitance C 2...

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Abstract

The invention discloses a self-starting method of a bi-directional wireless power transmission system based on the detection of a searching coil. The method is suitable for the self-starting of a noncontact power bi-directional transmission system. Taking the power flowing from a side 1 to a side 2 as an example, at the starting stage of the system, the phase information of a high-frequency inversion voltage at the side 1 is acquired by using a sampling resistor at the side 2 and used as an input of a controller at the side 2, so that the controller at the side 2 outputs a control pulse meeting the phase requirement of the system. After the self-starting process of the system is completed, the controller at the side 2 generates a turn-off signal to cut off the sampling resistor, so that the consumption on the sampling resistor when the circuit works normally can be eliminated; meanwhile, the input voltages at the side 1 and the side 2 are converted to a normal voltage stage so as to execute the high-efficient wireless bi-directional transmission of the energy.

Description

Technical field [0001] The invention relates to a self-starting method of a two-way wireless power transmission system, and is particularly suitable for the wireless power transmission field that requires two-way energy flow. Background technique [0002] Since the two-way wireless power transmission system can realize the two-way flow of energy, it has a peer-to-peer topology on side 1 and side 2, and is particularly suitable for wireless power supply between electric vehicles. Due to the limited energy storage of the on-board battery of an electric vehicle, when energy is transmitted wirelessly from one electric vehicle to another electric vehicle, a higher power factor is required. Enabling the system to have a higher power factor is inseparable from the startup process of the system; only after the system can achieve normal self-starting, energy can flow efficiently. So far, there has not been a complete solution for the self-starting process of two-way wireless power transm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/12
Inventor 谭林林颜长鑫黄学良郭金鹏王维
Owner SOUTHEAST UNIV
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