Sensorless Rotor Temperature Estimation of Permanent Magnet Synchronous Motor under Load Conditions

Martin Ganchev (Speaker), Christian Kral, Thomas Wolbank

Research output: Chapter in Book or Conference ProceedingsConference Proceedings with Oral Presentationpeer-review

Abstract

The work proposes a method for estimating the magnet temperature in permanent magnet synchronous machines (PMSM´s) under load conditions. The method implies an intermittent injection of a voltage pulse in the positive and negative d-axis of the motor. Thus, the difference of the resulting d-current responses depends on the machine operating point which is defined by the d-current, the q-current and the actual magnetization level of the permanent magnets. Since the magnetization of the magnets depends on the temperature, different d-current slopes reflect different temperature levels of the magnets. By applying a voltage pulse in the positive and negative d-axis of the motor, symmetry of the induced voltages can be achieved in a manner that the difference of the current responses from the positive and negative pulse is to a great extent speed independent.
Original languageEnglish
Title of host publicationUSB Proceedings IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society
Pages1989-1994
Number of pages6
Publication statusPublished - 2012
EventI38th Annual Conference of the IEEE Industrial Electronics Society- IECON 2012 -
Duration: 24 Oct 201227 Oct 2012

Conference

ConferenceI38th Annual Conference of the IEEE Industrial Electronics Society- IECON 2012
Period24/10/1227/10/12

Research Field

  • Not defined

Keywords

  • Condition monitoring
  • permanent magnet machines
  • rotor temperature
  • magnet temperature estimation
  • saturation effects.

Fingerprint

Dive into the research topics of 'Sensorless Rotor Temperature Estimation of Permanent Magnet Synchronous Motor under Load Conditions'. Together they form a unique fingerprint.

Cite this