A wireless energy dynamic constant power output system and its equivalent resistance control method

A technology of equivalent resistance and wireless energy, applied in the direction of circuit devices, electrical components, etc., can solve problems such as the inability to guarantee stable output of system power and large fluctuations in coupling coefficient, so as to reduce voltage and current stress and ensure system output power Effect

Active Publication Date: 2022-03-04
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that in the field of rail transit, the existing dynamic wireless power transmission technology cannot guarantee the stable output of the system power due to the offset change of the spatial position and the large fluctuation of the coupling coefficient. Wireless energy dynamic constant power output system and its equivalent resistance control method

Method used

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  • A wireless energy dynamic constant power output system and its equivalent resistance control method
  • A wireless energy dynamic constant power output system and its equivalent resistance control method
  • A wireless energy dynamic constant power output system and its equivalent resistance control method

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Embodiment 1

[0044] Such as figure 1 As shown, this embodiment provides a wireless energy dynamic constant power output system, including a sending end and a receiving end, the sending end includes a sending coil Lp, and the receiving end includes a secondary component 1 and a secondary component 2 respectively connected to the load R, The secondary side assembly 1 includes a receiving coil Ls1 parallel to the sending coil Lp, and the secondary side assembly 2 includes a receiving coil Ls2 parallel to the sending coil Lp, and the receiving coil Ls1 and the receiving coil Ls2 are respectively composed of square coils with a side length of L, The transmitting coil Lp is composed of four square coils with a side length L cascaded, the receiving coil Ls1 and the receiving coil Ls2 are overlapped to form a secondary coil group, and the length of the overlapping part of the receiving coil Ls1 and the receiving coil Ls2 is L / 2.

[0045] The sending end also includes a DC power supply E, a full-br...

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Abstract

The invention discloses a wireless energy dynamic constant power output system and its equivalent resistance control method, and relates to the technical field of wireless energy dynamic transmission. The invention includes a sending end and a receiving end, the sending end includes a sending coil Lp, and the receiving end includes a load Secondary side assembly 1 and secondary side assembly 2 connected by R, secondary side assembly 1 includes receiving coil Ls1 parallel to sending coil Lp, secondary side assembly 2 includes receiving coil Ls2 parallel to sending coil Lp, receiving coil Ls1 and receiving coil Ls2 They are composed of square coils with a side length of L, the transmitting coil Lp is composed of several square coils with a side length of L in cascade, the receiving coil Ls1 and the receiving coil Ls2 are overlapped to form a secondary coil group, and the length of the overlapping part is L / 2. The invention ensures that the total power is evenly distributed between the receiving end of the secondary side assembly 1 and the receiving end of the secondary side assembly 2 during the moving process, which not only reduces the voltage and current stress of the switch tube, but also ensures the output power of the system constant.

Description

technical field [0001] The invention relates to the technical field of wireless energy dynamic transmission in rail transit, and more specifically relates to a wireless energy dynamic constant power output system and an equivalent resistance control method thereof. Background technique [0002] The wireless power transmission system uses the principle of high-frequency electromagnetic field near-field coupling, uses high-frequency magnetic field as the transmission medium, and realizes the wireless transmission of electric energy through the magnetic field coupling between the sending coil and the receiving coil. The wireless power transmission system is mainly composed of two parts, one is the transmitting end connected to the power supply side, and the other is the receiving end located on the load side. The energy is transmitted from the transmitting end to the receiving end through electromagnetic induction. The existing wireless power transmission system is mainly compo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/10H02J50/12
CPCH02J50/10H02J50/12
Inventor 麦瑞坤刘登伟刘野然何正友
Owner SOUTHWEST JIAOTONG UNIV
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