Open-circuit fault detection of inverter fed PMSM for electrical powertrain applications

Abstract

<p>This paper aims to enhance the reliability of power electronic converters fed<br />permanent magnet synchronous machine for electrical powertrain applications.<br />Many faults like open circuit may affect the power converter and quickly lead to<br />a decline in supplied power quality and all the power train components behavior.<br />In this framework, this paper proposes an open circuit fault detection scheme for<br />inverters. First, the dynamic models of the powertrain subsystems were developed.<br />In fact, all the mathematics models of the motor, inverter, power converter,<br />battery and charger are presented. Then, a detection scheme of open-circuit fault<br />in inverter/motor. The control schemes were elaborated based on current analysis<br />method. The diagnosis strategy under discontinuous switch-ing dynamics of<br />the DC/AC inverter is proposed.</p>