Development and construction of a measurement device for testing and safe operation of experimental wireless electric vehicle chargers

摘要

As a result of the rising electrification rate of EVs there is a need for higher charging performance of wireless power transfer (WPT) systems in electric vehicles to keep pace with technological progress and tethered charging. An effective method to raise power is to increase the transmission frequency. Thus, new challenges arise not only regarding the power semiconductors but also for measurement specification and equipment. Due to safety related aspects and logging of important system parameters (e.g. transmitted power, currents) this paper proposes a design process for an appropriate measuring device in high frequency and high power WPT systems.