Disturbance-free operation of a multiphase current-regulated motor drive with an opened phase

Abstract

Although design of induction motor drives employing field oriented control has reached a relatively mature state, relatively little effort has been directed toward improving the reliability of these drives. In this paper, a new, improved induction motor control strategy is proposed incorporating a multiphase machine that allows for continuous, disturbance-free operation of the drive even with complete loss of one (or more) legs of the inverter or motor phase. A complete analysis of both an even phase and an odd phase machine utilizing this new control and circuit concept is included.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>