Study on LCL type IPT system power bi-directional push mode

Abstract

Aiming at the working principle of inductive power transfer (IPT) technology, a bi-directional power conversion topology based on LCL type composite resonance is proposed. This topology introduces the advantages of LCL type resonance into the bi-directional power topology which has a resonance capacity larger than the single stage LC, it has a strong load adaptability, a smaller switching device voltage and current stress. Aiming at the LCL bi-directional power topology proposed, its working principle is introduced in detail, and the AC impedance model and mathematical model of the system are established. On this basis, the feasibility is verified by using the simulation experiment results.