Abstract
Conventionally, the in-wheel motor is powered by cables from the battery attached to electric vehicle (EV) body which has a risk of disconnection in case of high acceleration or harsh environment. To solve this issue, using wireless power transfer (WPT) technology, a wireless in-wheel motor (WIWM) based on LCC-S Compensation topology is proposed. To cater for varying power requirements of WIWM, and generate optimal power from WPT system, an ultracapacitor (UC) is connected in parallel with WIWM. The UC and onboard battery make a hybrid energy storage system for the in-wheel motor system. A super-twisting sliding mode controller-based control system has been designed to drive the WIWM at desired speed and track UC current to required reference. The stability of proposed control system is verified by Lyapunov stability criteria. The performance of the proposed controller has been compared against conventionally used PID and Lyapunov controller by driving EV according to European Extra Urban Driving Cycle (EUDC). Finally, the real-time performance of proposed control scheme has been validated by controller hardware-in-loop (C-HIL) experiments.
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