基于内反馈电动机的串级调速系统改进研究

Improvement of Cascade Speed Regulation System Based on Internal Feedback Motor

为了改进传统串级调速系统的性能,在分析内反馈电动机结构特点的基础上,提出了一种基于内反馈电动机的改进型串级调速系统。主要思路是以IGBT有源逆变器替代晶闸管逆变器,采用SVPWM逆变器控制策略。从仿真实验结果来看,系统在换流过程中的可靠性增强,整体调速性能相对较优,验证了该系统的拓扑结构及其控制策略是可行的。

In order to improve the performance of traditional cascade speed regulation system,an improved cascade speed regulation system based on internal feedback motor is proposed on the basis of analyzing the structure characteristics of internal feedback motor.The main idea is to replace thyristor inverter with IGBT active inverter and adopt SVPWM control strategy.The simulation results show that the reliability of the system is enhanced in the process of commutation,and the overall speed regulation performance is relatively good,which verifies the feasibility of the system's topology and control strategy.