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Purpose

This paper aims to design a hybrid circuit topology to achieve constant current (CC) and constant voltage (CV) outputs for wireless battery charging. The designed system should have no wireless communications between the primary and secondary sides.

Design/methodology/approach

This study used theoretical analysis, modeling, simulation analysis and experimental verifications.

Findings

The proposed inductor-capacitor-capacitor-parallel/series (LCC-P/S) topology can achieve quasi-CC output with LCC-P compensation and CV output with LCC-S compensation. Compared with existing solutions, neither active control nor wireless communication is required, thus, which is simple and cost-effective.

Originality/value

This paper proposes a simple reconstructed LCC-P/S compensation topology of the inductive-power-transfer battery charger with CC and CV outputs to comply with the battery charging profile. The proposed method has no need of wireless communication between the primary and secondary sides.

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