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 language | English |
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Article number | 8584089 |
Pages (from-to) | 3076-3086 |
Number of pages | 11 |
Journal | IEEE Transactions on Industry Applications |
Volume | 55 |
Issue number | 3 |
DOIs | |
State | Published - 1 May 2019 |
Keywords
- AC motor drives
- AC motors
- motor drives
- permanent-magnet motors
- temperature