Non-Invasive Magnet Temperature Estimation of IPMSM Based on High-Frequency Inductance with a Pulsating High-Frequency Voltage Signal Injection

Hyun Sam Jung, Donghoon Park, Hwigon Kim, Seung Ki Sul, Daniel J. Berry

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

In this paper, a method to estimate the temperature of a permanent magnet of a traction motor for automotive applications is derived by analyzing the high-frequency inductance of an interior permanent-magnet synchronous motor. The derived method exploits the high-frequency inductance as an indicator of the magnet temperature, and it does not require a temperature sensor not only on the rotor side but also on the stator side. Hence, the method is truly noninvasive. The proposed method has been verified in a small-scale experimental setup. The performance of the method has been evaluated at various torques, speeds, and magnet temperatures ranging from -24 to 82 °C. Through testing at various operating conditions, it has been confirmed that the maximum error is less than 2.9 °C even when the speed and torque vary.

Original languageEnglish
Article number8584089
Pages (from-to)3076-3086
Number of pages11
JournalIEEE Transactions on Industry Applications
Volume55
Issue number3
DOIs
StatePublished - 1 May 2019

Keywords

  • AC motor drives
  • AC motors
  • motor drives
  • permanent-magnet motors
  • temperature

Fingerprint

Dive into the research topics of 'Non-Invasive Magnet Temperature Estimation of IPMSM Based on High-Frequency Inductance with a Pulsating High-Frequency Voltage Signal Injection'. Together they form a unique fingerprint.

Cite this