串联型电能质量补偿器主电路设计方案

ANALYSIS AND DESIGN OF THE MAIN CIRCUIT OF SERIES POWER QUALITY COMPENSATOR

串联型电能质量补偿器能有效抑制系统电压跌落和消除电压谐波 ,对提高电能质量具有重要意义。文中介绍了串联型电能质量补偿器主电路的基本结构 ,结合实验样机的研制对主电路各部分设计方案进行了分析比较。提出了逆变器电路结构、运行方式及控制策略的设计 ,讨论了串联变压器和输出滤波器对装置性能的影响 ,比较了 3种直流储能方式的优劣。为类似装置主电路最佳方案的设计提供了依据。

The series power quality compensator can be used to restraint the voltage sag and eliminate voltage harmonics, and plays the important role in improving power quality. The fundamental configuration of the main circuit of series power quality compensator is proposed and its design scheme of the main circuit is analyzed based on the development of an experimental prototype. Moreover, the configuration, operation mode and control strategy of inverters are presented. The influence of the series transformer and output filter on the capacity is also discussed and the advantages and disadvantages of the three styles of DC energy are compared. The reference of the optimization circuit design for some devices is offered.