Magnetic Field Mitigation in Dynamic Wireless Power Transfer Systems by Double Sided LCC Compensation

Abstract

This paper deals with the mitigation of magnetic field emission in dynamic wireless power transfer (DWPT) systems. DWPTs are used to charge electric vehicles (EVs) in motion along electrified roads. A critical aspect of these systems is the magnetic field that must be compliant with regulation limits. In this work, a formulation for fine tuning of the LCC compensation is adopted to control magnetic field emission while maintaining high electrical performances and without varying the input impedance of the system. The numerical results demonstrate the proposed approach’s effectiveness in mitigating magnetic field emissions to comply with electromagnetic field (EMF) safety limits, while also improving power transfer efficiency.

Keywords

• Battery charging
• dynamic wireless power transfer (DWPT)
• electric vehicle (EV)
• electromagnetic compatibility (EMC)
• electromagnetic field (EMF) safety
• LCC compensation