改進(jìn)型全橋逆變電路的研究
作者:鄭玉蓮 褚鵬超 田曉燕 上傳時(shí)間:2013/4/10 19:20:06
摘要:提出一種改進(jìn)型全橋逆變電路結(jié)構(gòu),在全橋電路兩橋臂之間跨接一個(gè)儲(chǔ)能電感,采用單周期的控制策略,配合極性控制,實(shí)現(xiàn)輸出交流電壓幅值可調(diào),能夠適應(yīng)寬的電壓范圍,且結(jié)構(gòu)簡(jiǎn)單。詳細(xì)分析了改進(jìn)型逆變電路的工作原理,并推導(dǎo)了系統(tǒng)單周期控制下的小信號(hào)模型,通過對(duì)系統(tǒng)進(jìn)行閉環(huán)設(shè)計(jì),實(shí)現(xiàn)了輸出電壓的精確調(diào)節(jié)。仿真和實(shí)驗(yàn)結(jié)果證明了此方案的有效性。
敘詞:全橋逆變器,單周期控制,小信號(hào)建模,閉環(huán)設(shè)計(jì)
Abstract:An improved full-bridge structure with a jumper inductance is proposed. It can adapt to the wide voltage range and the outputvoltage is adjustable with one-cycle and polarity control. Meanwhile, the structure is very simple. Then the operation principle is analyzedin detail, and the small signal model is derived. In order to realize the exact regulation of the output voltage, the closed-loop is designed.Finally, the strategy is confirmed to be effective by the results of simulation and experiment.
Keyword:Full bridge inverter, One-cycle control, Small signal modeling, Closed-loop
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