针对传统感应电机(IM)恒功率调速区间有限，额定点外效率降低以及受使用场景约束的问题，为了拓宽调速和高效率工作区间以及适应多种环境运行需求，采用定子鼠笼型十二相IM替代传统分布式绕组三相IM。经过转子磁场定向矢量控制解耦出不同平面的谐波电流从而驱动电机旋转，通过控制函数对所有平面的谐波电流进行调控，能方便快捷地实现电机的极对数切换。对所提出的控制函数调控矢量解耦平面实现极对数切换的方法进行仿真验证，仿真结果表明所提极对数切换技术能够实现十二相IM在不同转速下的极对数切换，拓宽了转速调节区间，满足了不同工况工作时的高效率运转。

The constant power speed regulation interval of the traditional induction motor (IM) is limited, the outside rated point efficiency is reduced, and the use of the traditional motor is constrained by the use scene. In order to broaden the speed regulation and highefficiency working range and adapt to the operation requirements of various environments, a stator squirrel cage twelvephase IM is used to replace the traditional distributed winding three-phase IM. Through the rotor fieldoriented vector control, the harmonic currents of different planes are decoupled to drive the motor to rotate, the harmonic currents of all planes are regulated through the control function, which can easily and quickly switch the number of pole pairs of the motor. The proposed method of the controlling the vector decoupling plane of the control function to achieve pole pair switching is simulated and verified. The simulation results show that the proposed pole pair switching technology can realize the pole pair switching of twelvephase IM at different speeds. The speed adjustment range is widened to meet the highefficiency operation under different working conditions.

中科院“百人计划”C类项目(2017-123)