电工技术学报2017，Vol.32Issue(z2)：172-178,7.DOI:10.19595/j.cnki.1000-6753.tces.L70266
五电平MMC-UPQC的无源控制
Passivity Based Control of Five-Level MMC-UPQC
摘要
Abstract
This paper analyzes the power circuit topology and operating principle of five-level modular multilevel converter-unified power quality conditioner(MMC-UPQC), the mathematical model of dq0 coordinate system and EL model are established. In order to speed up the convergence of error storage function, the method of injecting damping is designed for passivity based controller in current inner loop to ensure the stability of MMC-UPQC. The desired current is obtained by PI controller in voltage outer loop, the static error is eliminated. Active and reactive power decoupling control is achieved through the proposed passivity based control, so the dynamic and static performance of system is ensured. Under the negative sequence double frequency coordinate transformation, inter-phase decoupling control is used to suppress circulating current and reduce the switch losses. The extraction of voltage and current compensation based on Park transformation is adopted, which has no need of phase lock loop, so the compensation precision is improved. At last, the simulation model of five-level is built in Matlab/Simulink. Simulation results show that accurately compensating unbalanced, harmonic voltage and reactive, harmonic current has verified the feasibility of passivity based control.关键词
模块化多电平变换器-统一电能质量调节器/EL模型/无源控制/PI控制/环流Key words
Modular multilevel converter-unified power quality conditioner/EL model/passivity based control/PI control/circulating current分类
信息技术与安全科学引用本文复制引用
祝贺,王久和,郑成才,张巧杰..五电平MMC-UPQC的无源控制[J].电工技术学报,2017,32(z2):172-178,7.基金项目
国家自然科学基金(51477011),北京市自然科学基金重点项目(KZ201511232035)和北京市高创计划教学名师项目(PXM2017-014224-000025)资助. （51477011）
