A Novel Step Down Auxiliary Power Supply employed in a Micro Drive for a Three Phase Tesla Induction Motor

摘要

In this paper the authors proposed and analysed a novel solution for a low power, low cost auxiliary power supply based on step down topology with floating control circuit and indirect output voltage regulation. The proposed solution can be employed to feed a control unit and gate drive circuits in a micro PWM inverter for a three phase Tesla's induction motor in low cost variable speed applications. Experimental verification of 15 V at 150 mA auxiliary power supply has been done.