一种新型PWM整流器改进控制方法及其快速性研究  

Improved Control Method for PWM Rectifier and the Research on Its Dynamic Ability

作　　者：李景灏 尹忠东[1] 冯寅[1] 张碧涵 LI Jinghao YIN Zhongdong FENG Yin ZHANG Bihan(School of Electrical and Electronic Engineering,North China Electric Power University,Beijing 102206,China)

机构地区：[1]华北电力大学电气与电子工程学院,北京102206

出　　处：《电气传动》2016年第10期21-25,共5页Electric Drive

摘　　要：三相PWM整流器一般采用基于dq坐标系的双闭环控制策略。在这种方法下,有功电流响应速度受制于VSR交流侧电压的可控范围。已有文献提出利用动态过程中无功电流提高系统动态响应速度的改进方法。通过深入研究,指出了现有改进方法存在的问题,对解耦补偿项进行了调整,并提出一种增加VSR交流侧电压稳态值作为控制指令补偿项的新方法。仿真结果表明,提出的方法不仅进一步优化了系统动态性能,且减少了系统动态性能对调节器参数的依赖,是一种实用的新方法。Dual closed-loop control method based on dq coordinate system is usually used for three-phase PWM rectifier. In this way,the dynamic performance of active current is restricted to the AC-side voltage of VSR. An existing method for improving dynamic performance is using the reactive current during the transient process. Based on deep research,pointed out the problems in existing improved method,adjusted the decoupling compensation,and presented a new control method,in which the steady-state value of AC voltage of VSR was used as compensation term of control value. The simulation results show that the proposed method can further optimize the dynamic performance and reduce its reliance on the regulator parameters.

关 键 词：PWM整流器 无功电流 解耦补偿 动态响应 调节器参数 

分 类 号：TM46[电气工程—电器]