摘要
受转子凸极效应与饱和效应的影响,永磁同步电机绕组的自感与互感随转子位置角呈现出周期性的变化。该文在分析永磁同步电机线电感随电角度变化规律的基础上,提出基于电机线电感基波分量与二次谐波分量的转子初始位置计算方法,2种方法均不需要额外的脉冲注入过程判断转子极性。通过向电机注入6组等宽的电压脉冲,计算并提取出绕组线电感的基波分量与谐波分量。为充分验证提出方法的有效性,选择3台典型的永磁同步电机进行实验验证与结果分析。结果表明,2种方法计算结果受电流采样电路非线性延迟影响较小,并能够可靠而有效地进行电机转子初始位置估计和磁极判断。
With the influence of salient pole and saturation of the rotor, self-inductance and mutual inductance of permanent magnet synchronous motor(PMSM) winding exhibit periodic changes along rotor position. On the basis of analyzing the variation of line inductance with angle, two initial position calculation methods were proposed, using the fundamental component and the second harmonic component of the line inductance. Neither method requires an additional rotor polarity identification process. The fundamental and second harmonic components of the winding inductance can be calculated and extracted by injecting six equal-width voltage pulses into the windings. In order to fully verify the effectiveness of the proposed methods, three typical permanent magnet synchronous motors were selected for test verification and result analysis. The results show that both methods can calculate the initial rotor position and determine the magnetic poles reliably and effectively.
作者
张树林
康劲松
母思远
ZHANG Shulin;KANG Jinsong;MU Siyuan(College of Electronics and Information Engineering,Tongji University,Jiading District,Shanghai 201804,China;Institute of Rail Transit,Tongji University,Jiading District,Shanghai 201804,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2020年第19期6085-6092,共8页
Proceedings of the CSEE
基金
国家重点研发计划项目(2016YFB1200602-02)。
关键词
永磁同步电机
转子初始位置
绕组线电感
极性判断
脉冲电压注入
permanent magnet synchronous motors
initial rotor position
line inductance
magnetic pole determination
pulse voltage injection
