Title :
A modified direct torque control for PMSM under inverter fault
Author :
Sun, Dan ; He, Yikang
Author_Institution :
Coll. of Electr. Eng., Zhejiang Univ., Hangzhou
Abstract :
This paper introduces a fault tolerant inverter for a direct torque control (DTC) based permanent magnet synchronous motor (PMSM) system; this fault tolerant inverter changes to a four-switch three-phase inverter after a short-switch fault occurrence. A modified DTC method is proposed for this new drive system under inverter fault. The models of the after fault PMSM DTC system is analyzed, and the PMSM drive system based on both the traditional and modified DTC method are studied. The simulation results verify that the modified direct torque control method and the fault tolerant inverter ensure the high reliability and continuously operation of the PMSM DTC system under inverter fault
Keywords :
fault diagnosis; invertors; machine control; permanent magnet motors; switching convertors; synchronous motor drives; torque control; PMSM drive system; direct torque control; fault tolerant inverter; four-switch three-phase inverter; permanent magnet synchronous motor; short-switch fault occurrence; Aerospace industry; Control systems; Drives; Fault tolerance; Fault tolerant systems; Permanent magnet motors; Pulse width modulation inverters; Sun; Topology; Torque control; Direct Torque Control; Inverter fault; Permanent Magnet Synchronous Motor; Voltage vector;
Conference_Titel :
Electrical Machines and Systems, 2005. ICEMS 2005. Proceedings of the Eighth International Conference on
Conference_Location :
Nanjing
Print_ISBN :
7-5062-7407-8
DOI :
10.1109/ICEMS.2005.203019
