同相逆并联结构在孤岛模式下的谐波电流抑制

Harmonic Current Suppression of an In-phase Anti-parallel Structure in Island Mode

同相逆并联作为一种常见的整流结构,已广泛应用在大功率电解工业当中,在此类生产活动中,整流装置需输出持续、稳定、强大的直流电以保持工艺参数的稳定性,一旦系统中出现故障使整流装置退出运行,将会给生产带来巨大的损失。该文聚焦于同相逆并联结构在孤岛模式下的谐波分布特性,讨论了击穿故障的发生,分析了传统谐波抑制手段面对孤岛模式时的不足和问题,并提出了同相逆并联在孤岛模式下的谐波电流抑制策略。

Contra parallel is the common structure in rectifier devices,which is used in high power electriolysis industry.The rectifier devices must provide high quality DC current to ensure the stability of pocess parameters and product quality in such production activities.Once the accidents occur in rectifier device,they will bring enormous economic loss and casualties.This paper focus on harmonic distribution characteristics of the contra parallel which applied in island model.Discussing and analysing the shortcomings and the problems about harmonic remove in traditional paths,meanwhile,the fault in the contra parallel system has been predicted.Finally,the paper puts forward some strategy to restrain the harmonics current consist in the island model,which contain Contra parallel structure.