Comparative Study of Magnet Temperature Estimation at Low Speeds Based on High-Frequency Resistance and Inductance

被引：2

作者：

Kim, Hwigon ^{[1
]}

Kang, Seon-Gu ^{[2
]}

Jung, Jae-Jung ^{[3
]}

Jung, Hyun-Sam ^{[2
]}

机构：

[1] Seoul Natl Univ, Sch Elect Engn & Comp Sci, Seoul 08826, South Korea

[2] Dongguk Univ, Dept Elect & Elect Engn, Seoul 04620, South Korea

[3] Kyungpook Natl Univ, Dept Elect & Elect Engn, Daegu 41566, South Korea

来源：

ELECTRONICS | 2023年 / 12卷 / 09期

基金：

新加坡国家研究基金会;

关键词：

motor drive; magnet temperature; high-frequency injection; magnet temperature estimation; PERMANENT-MAGNET; THERMAL-MODEL; IPMSM; MACHINES; MOTOR;

D O I：

10.3390/electronics12092011

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Interior permanent magnet synchronous motors have been widely used in electric vehicles. These motors employ Nd-Fe-B as the permanent magnet, which is vulnerable to temperature variations. Moreover, some features of Nd-Fe-B magnets are related to temperature, which can affect motor characteristics. Therefore, magnet temperature is an important parameter and methods for estimating it have been developed. In particular, a signal injection method has been developed for low-speed regions. In this method, two parameters are employed: high-frequency resistance and high-frequency inductance. In this paper, these two methods are compared to determine which parameter is more appropriate for estimations at low speeds and to reveal whether signal injection methods can be applied to the standstill condition. The comparison indicated that the high-frequency inductance-based method has a stronger correlation with the magnet temperature at low speed and standstill conditions than the high-frequency resistance-based method.

引用

页数：17

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