π-type lcl structure based on array coil wireless energy transmission and its working method

Abstract

A LCL structure shaping in Pi and working method based on transferring wireless energy of array lines ring belongs to the technical field of transferring wireless energy. The invention solves problems of higher cost for preparing equipment existing in LCL compensation network, adjusting compensation inductance value and limiting the expansion of equipment. One outfan of a high frequency pumping unit is simultaneously connected with one end of a first power switch and one end of a first array coil. The other end of the first array coil is simultaneously connected with one end of a first compensation capacitor and one end of a compensation inductance. The other end of the first power switch is linked with the other end of the first compensation capacitor. Another outfan of the high frequency pumping unit is simultaneously connected with one end of a second power switch and one end of a second array coil. The other end of the second array coil is simultaneously connected with one end of a second compensation capacitor and the other end of the compensation inductance. The other end of the second power switch is connected with the other end of the second compensation capacitor. The technology is applied in the field of transferring wireless energy.

Description

technical field [0001] The invention relates to wireless energy transmission technology. Background technique [0002] With the prominent environmental problems and energy pressure, the promotion of electric vehicles has been favored by countries all over the world. Compared with traditional plug-in charging technology, electric vehicle wireless charging technology has better security and flexibility, and its application prospect is very broad. Among them, dynamic wireless charging technology can effectively increase the cruising range of electric vehicles and reduce the number of battery packs, which not only reduces the cost of electric vehicles, but also prolongs their service life, making power supply safer and more reliable. The main advantages of the array coil structure applied to dynamic wireless power supply are: the small-sized coupling mechanism effectively reduces the power loss, and also limits the magnetic flux leakage, and the safety of magnetic radiation tha...

AI Technical Summary

Problems solved by technology

[0004] In the present invention, when the existing LCL compensation network is used to realize the constant current excitation of the coil at the transmitting end, it is necessary to additionally wind a compensation inductance identical to its self-inductance for each array transmitting coil, resulting in an increase in the production cost of the equipment, and the coil at the transmitting end When the inductance needs to be adjusted, the compensation inductance value is difficult to follow and adjust, which limits the expansion of the equipment. The present invention proposes a Π-type LCL structure based on array coil wireless energy transmission

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