高压电机配用高压变频器具有较大的节能性和高效性，已有广泛应用。级联H桥多电平变频器采用模块化设计理念，通过多个相同的低压变换单元级联起来实现高压及大功率的功能，且变频器输出电流谐波较小。极相调制感应电机可以将传统三相电机的控制方法和极相调制模式结合起来，使电机转矩和转速范围得到扩展。为此介绍一种级联H桥多电平变频器拖动极相调制感应电机变频起动和调速，该电机的定子绕组可配置为9相4极和3相12极。通过仿真验证了级联H桥多电平变频器能够满足极相调制感应电机的变频调速性能和极相调制矢量控制性能，可为新能源发电、船舶推进、工业传动等高压大功率领域提供技术保障。

High voltage inverter for high voltage motor has great energy saving and high efficiency, and has been widely used. The cascaded H-bridge multilevel converter adopts the modular design concept. The functions of high voltage and high power are realized by cascading multiple identical low voltage conversion units, and the output current harmonic of the converter is small. Pole-phase modulation induction motor can combine the control method of traditional three-phase motor with pole-phase modulation mode to expand the ranges of motor torque and speed. A cascaded H-bridge multilevel frequency converter is introduced to drive a pole-phase modulation induction motor with 9-phase 4-pole and 3-phase 12-pole stator windings. The simulation results show that the cascaded H-bridge multilevel converter can meet the performance of the variable frequency speed regulation and pole-phase modulation vector control of pole-phase modulation induction motor, providing technical support for high-voltage and high-power fields such as new energy power generation, ship propulsion and industrial transmission.

江西省教育厅科学技术研究项目(GJJ210823)