Real-time thermal management of permanent magnet synchronous motors by resistance estimation

Wilson, S. D. and Stewart, Paul and Stewart, Jill (2012) Real-time thermal management of permanent magnet synchronous motors by resistance estimation. IET Electric Power Applications, 6 (9). pp. 716-726. ISSN 1751-8660

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Official URL: http://dx.doi.org/10.1049/iet-epa.2010.0232

Abstract

Real-time thermal management of electrical machines relies on sufficiently accurate indicators of internal temperature. One indicator of temperature in a permanent-magnet synchronous motor is the stator winding resistance. This study applies two current injection techniques to a commercially produced permanent-magnet servomotor, which are applicable under load and cause minimal disturbance to the shaft torque. The current injection techniques applied here enable the temporary boosting of resistive voltage and consequent application to low-resistance, high-voltage machines. The effectiveness of the approach is demonstrated by tracking the change in winding temperature during a 2 h load cycle.

Item Type:Article
Keywords:pmac motor, resistance estimation, Temperature estimation, electric motor thermal management
Subjects:H Engineering > H620 Electrical Engineering
H Engineering > H630 Electrical Power
Divisions:College of Science > School of Engineering
ID Code:6054
Deposited By:INVALID USER
Deposited On:18 Aug 2012 15:25
Last Modified:05 Dec 2013 09:14

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