H桥级联STATCOM直流电容电压平衡控制研究  

DC Capacitor Voltage Balancing Control of H-bridge Cascaded STATCOM

作　　者：杨兴武[1] 薛花[1] 徐亚军[2] 

机构地区：[1]上海电力学院,上海200090 [2]上海交通大学,电力传输与功率变换控制教育部重点实验室,上海200240

出　　处：《电力电子技术》2014年第1期39-40,57,共3页Power Electronics

基　　金：国家自然科学基金(51207086,51007053);上海市教育委员会科研创新项目(14YZ126)~~

摘　　要：H桥级联静止无功补偿器(STATCOM)具有结构简单、易模块化实现等众多优点,但直流电容电压难以实现平衡控制始终是限制其广泛应用的一个重要难题。从内在机理出发对现有的电容电压平衡控制方法进行归类分析,提出控制手段的整体评价方法,为实际系统中控制策略的选取提供理论依据。搭建实验样机并基于直接功率控制完成包含直流电容电压平衡的整体控制,实验结果验证了该控制方法的有效性。H-bridge cascaded static var compensator（STATCOM） has many advantages,such as compact structure, easy sealability.One of the main disadvantages of the cascaded H-bridge converter is the voltage unbalance of direct current capacitor that could appear on the direct current side of different H-bridges.The capacitor voltage balancing control strategy from the internal mechanism is analyzed which could provide a theoretical basis for the actual system. An experimental prototype is designed, direct current capacitor voltage balancing control based on direct power control is completed, experimental results verify the effectiveness of the control method.

关 键 词：静止无功补偿器 直流电容电压 平衡控制 

分 类 号：TM713[电气工程—电力系统及自动化]