Design and Analysis of Wireless Switched Reluctance Motor Drives

In this paper, a new class of wireless secondary converterless switched reluctance motor (WSC-SRM) drives is proposed and implemented. The key is to develop a unique wireless power transfer (WPT) system to directly drive the SRM without involving any power converter at the motor side. This is particularly essential to enable the WSC-SRM working in isolated environment with maintenance free. Based on selective WPT, the phase windings of the SRM can be properly energized by the same transmitter which adopts a newly developed compound structure. Meanwhile, signal duty ratio control of the transmitter is employed to achieve the speed control of the WSC-SRM. Both simulation and experimental results are given to validate the feasibility of the proposed system. For exemplification, a prototype is designed and constructed, which can provide WPT up to 150 mm transmission distance and achieve up to 72.8% transmission efficiency.