Initial Rotor Position Detection for Sensorless Interior PMSM With Square-Wave Voltage Injection
Initial Rotor Position Detection for Sensorless Interior PMSM With Square-Wave Voltage Injection
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DOI：
10.1109/tmag.2017.2718025
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发表时间：
2017-06
影响因子：
2.1
通讯作者：
Xuan Wu;Yaojing Feng;Xiao Liu;Shou-dao Huang;X. Yuan;Jian Gao;Jian Zheng
中科院分区：
文献类型：
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作者：
Xuan Wu;Yaojing Feng;Xiao Liu;Shou-dao Huang;X. Yuan;Jian Gao;Jian Zheng
为了解决无位置传感器内置式永磁同步电动机的起动问题，提出了一种改进的基于方波信号注入的转子初始位置估计方法。代替传统的正弦电压注入，方波电压信号被注入到定子绕组中以获得磁极位置。基于饱和和凸极原理，采用电压脉冲注入法识别永磁体的极性。采用方波电压注入法检测磁极位置，无需低通滤波器和延时就能计算出误差信号。通过1.5 kW内置式永磁同步电机驱动平台验证了所提出的方法。
In order to resolve the starting problem for position sensorless interior permanent magnet synchronous motor, an improved initial rotor position estimation method based on square-wave signal injection is presented in this paper. Instead of the conventional sinusoidal voltage injection, square-wave voltage signals are injected into stator windings to obtain magnet pole position. On the basis of saturation and saliency principle, the voltage pulse injection method was adopted to identify the magnet polarity. Detecting the magnet pole position by using the square-wave voltage injection, the error signal can be calculated without low-pass filters and time delays. The proposed method is verified via a 1.5 kW interior permanent magnet synchronous motor drive platform.