Multi-phase excitation-full space pickup wireless energy transmission system and its control method
A wireless energy transmission and control method technology, applied in the direction of circuit devices, electrical components, etc., can solve the problems of limited application range, decreased transmission efficiency, high directionality requirements, etc., to achieve small size, high degree of freedom and flexibility, low cost effect
Active Publication Date: 2018-07-13
CHONGQING UNIV
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[0004] The principle of such a transmission method is simple and easy to implement, but the transmission efficiency is closely related to the transmission distance and the direction of the coil. The larger the distance, the sharper the transmission efficiency will drop, and the higher requirements for directionality lead to the deviation and flexibility of the system. Poor, which greatly limits its scope of application
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[0055] The specific implementation manner and working principle of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0056] Such as figure 1 As shown, a multi-phase excitation-full space pickup wireless energy transfer system includes three high-frequency AC voltage sources, three primary resonant circuits, load resonant circuits and loads, and is characterized in that the three primary The transmitting coils in the resonant circuit are all single-layer planar coils wound with Litz wires, and the parameters of the three transmitting coils are the same, and the centers of the three transmitting coils coincide and are arranged orthogonally to each other in three-dimensional space.
[0057]In order to facilitate subsequent analysis, 1, 2, and 3 are used to represent the three primary resonant circuits respectively, and a is used to represent the load resonant circuit, then the equivalent circuit model of the system is...
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The invention discloses a multiphase excitation-total space pickup wireless energy transfer system and a control method therefor. Efficient and stable energy transfer can be obtained in the total space. According to the wireless energy transfer system, three working modes and an inversion power supply with adjustable phase are adopted for exciting three mutually-orthometric coils respectively; a systematic mathematic model is established based on a mutual inductance coupling theory theoretically; by analyzing the energy transfer efficiency of the system, the working mode of the excitation power supply and the phase relations, the maximum energy transfer efficiency regulation and control mechanism of the system is designed; the energy transfer efficiency of the system when the load coils are under different pose conditions is researched by combination with computer aided analysis software; the research result proves that the system, which is loaded under a random pose state, can always obtain the efficient and stable energy transfer efficiency; and in addition, the research result proves that the designed regulation and control mechanism is simple and effective.
Description
technical field [0001] The invention relates to wireless energy transmission technology, specifically, a multi-phase excitation-full space pickup wireless energy transmission system and a control method thereof. Background technique [0002] With the development of wireless power transmission technology, people have higher and higher requirements for the flexibility of wireless power transmission. [0003] Most of the existing wireless power transmission systems adopt the principle of electromagnetic induction, that is, two transmitting coils and receiving coils are arranged close to each other, and the wireless transmission of energy is realized through the electromagnetic coupling between the transmitting coil and the receiving coil. [0004] Such a transmission method is simple in principle and easy to implement, but the transmission efficiency is closely related to the transmission distance and the direction of the coil. The larger the distance, the sharper the transmiss...
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IPC IPC(8): H02J50/12
Inventor 叶兆虹孙跃戴欣唐春森朱婉婷
Owner CHONGQING UNIV