开绕组六相永磁同步电机模型预测电流控制  

Model Predictive Current Control of Open⁃end Winding Six⁃phase Permanent Magnet Synchronous Motor

作　　者：于佳正 张志锋[1] 孙全增 张清艺 YU Jiazheng;ZHANG Zhifeng;SUN Quanzeng;ZHANG Qingyi(School of Electrical Engineering,Shenyang University of Technology,Shenyang 110870,Liaoning,China)

机构地区：[1]沈阳工业大学电气工程学院,辽宁沈阳110870

出　　处：《电气传动》2024年第9期3-11,共9页Electric Drive

基　　金：国家自然科学基金(61603263)。

摘　　要：针对六相永磁同步电机模型预测电流控制中存在固有的共模电压较大和计算量繁重的问题,提出了一种开绕组六相永磁同步电机模型预测电流控制方法。首先,将六相永磁同步电机绕组的中性点打开并接入两个六相电压源逆变器,形成双逆变器馈电的开绕组结构,目的是抵消逆变器之间共模电压。其次,双逆变器馈电会产生繁多的电压矢量,从中选出具有零共模电压性质的矢量。在此基础上,又考虑了x-y平面的谐波电流问题和母线电压利用率的问题,将矢量集精简为一个包含7个电压矢量的控制集,减少了计算负担。最后,通过与现存的传统六相永磁同步电机模型预测电流控制方法进行对比仿真,证明了所提出方法的有效性。Aiming at the inherent problems of large common-mode voltage and heavy computation in model predictive current control of the six-phase permanent magnet synchronous motor(PMSM),a model predictive current control method for an open-end winding six-phase PMSM was proposed.Firstly,the neutral point of the sixphase PMSM was opened and two six-phase voltage source inverters were connected to form an open-end winding structure fed by a dual inverter structure,in order to offset the common-mode voltage between inverters.Secondly,a wide range of voltage vectors were fed by a dual inverter,from which the vector with zero common-mode voltage property was selected.On this basis,the harmonic current in the x-y plane and the utilization rate of bus voltage were considered,and the vector set was reduced to a control set containing seven voltage vectors,which reduces the computational burden.Finally,compared with the existing model predictive control method of traditional six-phase PMSM,the effectiveness of the proposed method was proved.

关 键 词：模型预测电流控制 六相永磁同步电机 共模电压 开绕组结构 谐波电流 

分 类 号：TM351[电气工程—电机]