A New Type of In-Wheel Outer Rotor Switched Reluctance Motor Drive Based on Selective Wireless Power Transfer Technology

This paper proposes a new type of in-wheel outer rotor switched reluctance motor (ORSRM) drive based on selective wireless power transfer (WPT) using receivers of different resonant frequencies. It removes all the cables between the power supply side and the motor side in order to realizing the separation between these two parts. According to the theory of the magnetically-coupled resonance wireless power transfer, power can be selectively delivered to multiple receivers with different resonant frequencies. Every phase will be selectively driven by regulating the resonant frequency of the transmitter to match the specified receivers according to the rotor position signal. However, different resonant frequencies lead to the diversity of the phase current which will cause the torque ripple, a DC/DC converter is required to change the input voltage of the inverter. The simulation results prove the feasibility of this wireless ORSRM drive.