級聯(lián)型航空靜止變流器直流環(huán)節(jié)電路拓?fù)溲芯?/h1>

作者：李飛  謝少軍  　上傳時(shí)間：2005/3/19 16:20:49

摘要：基于級聯(lián)技術(shù)的新型航空靜止變流器的效率主要取決于其直流變換環(huán)節(jié)。針對低壓大電流應(yīng)用,推挽正激變換器具有防止開關(guān)管的電壓尖峰和抑制變壓器偏磁等特點(diǎn)。本文詳細(xì)分析了推挽正激變換器的工作原理，對比研究了該變換器的三種次級整流結(jié)構(gòu)，比較了各自的優(yōu)缺點(diǎn)。實(shí)驗(yàn)表明，采用全波整流的推挽正激變換器效率可以達(dá)到89%以上，為新型航空靜止變流器效率超過85%奠定了基礎(chǔ)。 敘詞：靜止變流器；推挽正激變換器；全橋整流；全波整流；倍流整流 Abstract：The efficiency of a novel aircraft static inverter based on cascaded inverter is mainly rested with its DC link. The push-pull forward converter has the advantages of preventing the high voltage spike of the switches and restraining magnetism deflection of the transformer in low-voltage high-current situation. In this paper, the principle of push-pull forward converter is analyzed in detail, three secondary-side rectifier topologies are studies contrastively and the advantages and disadvantages are compared. Finally, experimental results show that the efficiency of push-pull forward converter with full-wave rectifier is over 89%, which establishes the foundation of the novel aircraft static inverter’s efficiency exceeding 85%. Keyword：aircraft static inverter; push-pull forward converter; full-bridge rectifier; full-wave rectifier; current-doubler rectifier