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兆瓦级脉冲供电用间歇整流装置技术研究(一):新型晶闸管触发策略设计

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Keywords: 间歇整流装置,晶闸管触发策略,脉冲应用,兆瓦级应用,晶闸管触发诊断

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Abstract:

脉冲间歇整流装置负载功率变化迅速、交流供电频率变化范围大、交流电压/电流畸变严重,对其晶闸管触发策略的研究鲜见报道。以输出侧为直流电容的兆瓦级脉冲间歇整流装置为研究对象,提出并实现一种适用于此种应用的新型晶闸管触发策略。所提出的触发策略根据晶闸管阳极—阴极端电压的变化来实时调整晶闸管的触发脉冲,较好地克服了现有触发策略在脉冲间歇整流应用中的不足。策略结构简单、可靠,实用性强。设计中同时集成一种实时的晶闸管触发状态诊断机制,完了触发策略的执行构架。试验结果表明:在提出的触发策略下,装置运行正常,在负载突变的情况下,所提出的触发策略仍表现出色;脉冲运行中,触发状态实时诊断结果与理论分析一致,可为控制提供实时可靠的信息。

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