Design of loosely coupled inductive power transfer systems

TLDR

Loosely coupled inductive power transfer systems enable noncontact power delivery across large airgaps to moving loads, but large leakage inductances necessitate compensation to meet power transfer requirements. This paper proposes a design methodology for such loosely coupled inductive power transfer systems. The methodology emphasizes tradeoffs in the design process, particularly regarding compensation strategies for large leakage inductances. The paper discusses the required level of compensation and explores possible compensation topologies.

Abstract

A design methodology for loosely coupled inductive power transfer systems is proposed. Such systems are used for noncontact power transfer, often over large airgaps to moving loads. Due to the large leakage inductances that result, compensation is usually necessary to achieve the required power transfer capability. The level of compensation, as well as possible compensation topologies, are discussed in the paper. Special attention is paid to the tradeoffs involved during the design process.