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This paper focuses on the design of secondary control loop in wireless EV charging system according to model calculation instead of empirical estimation or simulation attempt. To simplify the structure of secondary circuit, semi-bridgeless active rectifier is used. The analysis and modeling of semi- bridgeless active rectifier is completed by small-signal modeling method. The secondary control loop...
This paper proposes a new wireless power transfer (WPT) control technique, which employs primary side controller and series-series (SS) or series-parallel (SP) compensation to achieve constant voltage (CV) charging or constant current (CC) charging without the information of the variable load. Through the variation of primary side resonant current, the charging voltage or charging current is estimated...
This paper present a method to estimate the output current or voltage in the primary-side of a two-transmitter inductive wireless power transfer system, which has been introduced to achieve the continuity of power transfer, without any direct measurement on the receiver coil and load conditions. The proposal can ensure the continuity and stability of charging in dynamic wireless power transfer system...
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