MMC变流器的无差拍电流预测控制器研究与设计  

Research and Design of Deadbeat Current Predictive Controller for MMC Converters

作　　者：赵峰[1] 甘延奇 陈小强[1] 王英 张帆[1] 李述特 ZHAO Feng;GAN Yanqi;CHEN Xiaoqiang;WANG Ying;ZHANG Fan;LI Shute(School of Automation and Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]兰州交通大学自动化与电气工程学院,兰州730070

出　　处：《高压电器》2023年第3期123-131,共9页High Voltage Apparatus

基　　金：国家自然科学基金地区项目(52067013,51767013)。

摘　　要：为了提高模块化多电平变流器MMC(modular multilevel converter)的稳定性与动态性能,实现环流抑制,提出基于交流电流和环流双目标调节的无差拍控制。通过MMC单相等效电路的动态方程,设计MMC交流电流分量以及环流分量的无差拍电流预测控制器,并针对实际控制存在的时延问题进行理论分析提出改进措施。通过搭建无差拍控制下模块化多电平变流器的十电平Simulink仿真模型,验证控制策略的有效性。结果表明:通过无差拍控制可以显著提高模块化多电平变流器的稳态和动态性能,且达到环流抑制和均压的目的。For improving stability and dynamic performance as well as achieving circulating current suppression of the modular multilevel converter(MMC),the deadbeat predictive control which is based on AC current and circulating current dual-objective regulation is proposed.The deadbeat predictive controller for AC current component and circulating current component of MMC are designed through the dynamic equation of MMC single-phase equivalent circuit.Then,the time delay issue which exists in the actual control is theoretically analyzed and the improvement measures are proposed.The effetiveness of the control strategy is verified by setting up the ten-level Simulink simulation model of modular multilevel converter under the deadbeat current predictive control.The results show that the stability and dynamic performance of MMC can be effectively improved through the deadbeat control,which achieves the purpose of circulating current suppression and grading voltage.

关 键 词：模块化多电平变流器 无差拍电流预测控制 延时补偿 环流抑制 

分 类 号：TM46[电气工程—电器] TP273[自动化与计算机技术—检测技术与自动化装置]