Abstract

While working for wireless charging system mutual inductance coil offset will cause magnetic coupling institutions to drop, causes the output voltage and reduce the transmission power of the problems, the article design a migration resistance excellent electric vehicle wireless power transfer (Wireless Power Transfer, WPT) system, the system adopts the LCC/LCC compensation topology and in the primary side reverse winding coil round asymmetric magnetic coupling structure. This paper describes the coil type and the basic principle of asymmetric structure used in the magnetic coupling mechanism, analyzes the effect of adding the reverse winding coil on the migration performance of the magnetic coupling mechanism, and gives the design method. Finally, circuit simulation software is used to simulate the system. The results show that when the transmission distance is 150mm and the horizontal deviation reaches 100mm, the system can still output constant power.

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