Finite Element Analysis of Permanent Magnet Synchronous Motors Subjected to Symmetrical Voltage Sags

• Main Authors: H. Fallah khoshkar, A. Doroudi, M. Mohebbi
• Format: Article
• Language: English
• Published: Iran University of Science and Technology 2014-12-01
• Series: Iranian Journal of Electrical and Electronic Engineering
• Subjects: Finite Element Method; Maxwell Software; Power Quality; Synchronous Motors; Torque Pulsations; Transient Analysis; Voltage Sag.
• Online Access: http://ijeee.iust.ac.ir/browse.php?a_code=A-10-1131-1&slc_lang=en&sid=1

This paper studies the effects of symmetrical voltage sags on the operational characteristics of a Permanent Magnet Synchronous Motor (PMSM) by Finite Element Method (FEM). Voltage sags may cause high torque pulsations which can damage the shaft or equipment connected to the motor. By recognizing the critical voltage sags, sags that produce hazardous torque variations could be prevented. Simulations results will be provided and the critical voltage sags are recognized. A simple theoretical analysis will also be presented to obtain a qualitative understanding of the phenomena occurring in PMSM during symmetrical voltage sags