Parameter Identification for Wireless power transfer System via Primary Electrical Information

Abstract

In order to avoid the potential safety issue caused by purely closed loop control strategy, accurate parameters identification process is necessary. However, too bulky auxiliary circuit and complex calculation process make identification difficult to execute. In this paper, a parameter identification method without additional components is proposed. The mutual inductance and primary self-inductance value can be estimated accurately with only rms value of primary voltages and currents. More importantly, proposed parameters identification method performances well when the primary current oscillates or distorts under bed operation state. Finally, an experimental platform is built to verify the feasibility of the proposed method.