Wireless Power Transfer for Shaded-Pole Induction Motor with Secondary Self-Drive Half-Bridge Inverter

This paper optimized an existing wireless shaded-pole induction motor (SPIM) system, which was made to operate in harsh or isolated environments. Compared with the previous wireless SPIM, the proposed system employs fewer MOSFETs by employing a three-coil choke and a multiple-frequency resonating compensation (MFRC) network. Since the controlled switch is the weakest component at the secondary side, the proposed system's robustness can be highly improved by reducing the number of controlled switches. For verification, simulation and experimentations are conducted, and the results are compared with the existing wireless motor systems.