Zhejiang University

Wenxing Zhong

Dehong Xu

Hao Li

Disclosed in the present application is an incompletely compensated wireless power transfer system. On the basis of an SS compensated wireless power transfer system topology, a primary side capacitor Cand a secondary side capacitor Ctake specific values, and in combination with a phase shift frequency modulation control method, a coupling range of a system output rated power is improved. According to the present application, by finding an appropriate combination of the primary side capacitor Cand the secondary side capacitor C, the system can output a required rated power in a larger coupling range under the condition of incomplete compensation.

Incompletely compensated wireless power transfer system

Disclose is a wireless electric energy transmission system for realizing PFC through secondary side modulation. According to the system, on the basis of a traditional wireless charging system topology, a traditional PFC circuit is removed, a grid voltage is turned into a 100 Hz voltage through uncontrolled rectification to directly supply power to an inverter of a primary side of a wireless charging system; an active full-bridge rectifying structure is adopted at a secondary side, and the PFC function is achieved only through secondary side modulation, wherein under the situation that a phase shift angle &#x3b1; of the inverter of the primary side is given.

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Hangzhou, China

Wenxing Zhong