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标题：六相串联三相双永磁同步电机直接转矩控制的研究 |
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作者：黄志坡,唐金城,叶开明，等 |
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| 2018年第12期 访问次数：310次 |
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摘要：为了进一步提高串联系统中电机转矩的控制性能，提出一种对称六相凸极式永磁同步电机串联三相凸极式永磁同步电机单逆变器供电的直接转矩控制策略。建立在自然坐标系下串联系统的数学模型，并利用正交变换矩阵转将机电能量转换变量和非机电能量转换变量变换到3个相互正交的αβ-xy-o1o2子空间中，采用电压矢量合成和单电压矢量相结合产生的方法产生新电压矢量，利用六相逆变器输出电压矢量实现对两台电机解耦独立控制。Matlab/simulink仿真验证表明，采用本文所提的控制策略后，系统中各台电机可以解耦独立运行。
关键词：对称六相凸极式永磁同步电机；三相凸极式永磁同步电机；串联；单逆变器，直接转矩控制
Abstract: In order to further improve the motor torque of the control performance in the series system, a direct torque control (DTC) strategy was proposed for sixphase symmetrical winding salient pole permanent magnet synchronous motor (PMSM)seriesconnected threephase salient pole permanent magnet synchronous motor(PMSM) in this paper. Established a mathematical model of the series system in the natural coordinate system, and transform the electromechanical energy conversion variables and the nonmechanical energy conversion variables into three orthogonal αβxyo1o2 subspaces by using the orthogonal transformation matrix, a new voltage vector is generated by a combination of voltage vector synthesis and singlevoltage vector generation, The output voltage vector of the six phase inverter was used to realize the decoupling and independent control of two motors. Matlab/simulink simulation shows that the proposed control strategy makes each motor stator decoupling and independent operation.
Key words: sixphase symmetrical winding salient pole permanent magnet synchronous motor; threephase salient pole permanent magnet synchronous motor; seriesconnection; single inverter; direct torque control(DTC)
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