摘要:閉環(huán)反饋控制功率電子變換系統(tǒng)容易發(fā)生不穩(wěn)定現(xiàn)象。本文在分析研究了補(bǔ)償網(wǎng)絡(luò)、輸出濾波器降階等閉環(huán)系統(tǒng)不穩(wěn)定性抑制技術(shù)的基礎(chǔ)上,提出并研究了一種具有抑制振蕩功能的可控阻尼LC輸出濾波器。該輸出濾波器具有電路結(jié)構(gòu)簡潔、易實(shí)現(xiàn)、振蕩抑制效果明顯、損耗低等優(yōu)點(diǎn)。仿真與試驗(yàn)結(jié)果均證實(shí)了其可行性。
敘詞:輸出濾波器;振蕩抑制;不穩(wěn)定性;閉環(huán)反饋控制
Abstract:Instability exists mostly in power electronic converters with close loop feedback control. After compensation network and the instability suppressing technique to lower orders of output filter were analyzed in detail and studied, a novel controlled damping LC output filter with surge suppressing was proposed and studied in this paper. The novel output filter owns the advantages of simple circuit structure, easy realize, strong ability of surge suppressing and low loss. The simulation result and experiment show it is feasible.
Keyword:output filter;surge suppressing;instability;close loop feedback control