Sensorless rotor temperature estimation of permanent magnet synchronous motor
Sensorless rotor temperature estimation of permanent magnet synchronous motor
复制标题
永磁同步电机无传感器转子温度估算
DOI：
10.1109/iecon.2011.6119449
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
T. Wolbank
中科院分区：
文献类型：
--
作者：
M. Ganchev;C. Kral;H. Oberguggenberger;T. Wolbank
本文提出了一种利用d型电流和转子磁通励磁在钢定子铁芯中产生的d轴饱和效应来估计永磁同步电机磁体温度的方法。该方法意味着在电机的d轴上间歇注入电压脉冲。产生的d电流响应是d电流本身的初始值和磁体的磁化水平的函数。因此，永磁体磁化水平的温度依赖性变化反映在电压脉冲上d电流斜率的变化中。以表面永磁电机为例，验证了该方法的有效性。
The work proposes a method for estimation of the magnet temperature in permanent-magnet synchronous machines by exploiting the d-axis saturation effects in the steel stator core produced by the d-current and rotor flux excitation. The method implies an intermittent injection of a voltage pulse in the d-axis of the motor. The resulting d-current response is a function of both the initial value of the d-current itself and the magnetization level of the magnets. Thus, a temperature dependent variation in the magnetization level of the permanent magnets is reflected in a variation of the d-current slope upon the voltage pulse. Experimental validation of the method is demonstrated with surface permanent-magnet motor.