HPWM技術(shù)在逆變器中的應(yīng)用
作者:彭小兵 胡興柳 穆新華 上傳時(shí)間:2005/3/19 16:20:49
摘要: 本文將HPWM軟開關(guān)技術(shù)應(yīng)用于逆變器,在不增加任何輔助回路的基礎(chǔ)上以實(shí)現(xiàn)了功率管的ZVS通斷。HPWM軟開關(guān)方式逆變器電路和控制簡(jiǎn)單,基本不增加功率管的附加應(yīng)力,且開通損耗大大減少,具有可靠性和效率均高的優(yōu)點(diǎn)。分析了方案的工作原理以及實(shí)現(xiàn)ZVS的條件。同時(shí)指出方案存在的問題和解決辦法。研制的工作頻率50kHz,1000VA的逆變器證明方案的可行性。
敘詞:HPWM,軟開關(guān),逆變器,ZVS
Abstract: In this paper,the HPWM soft-switching is applied in an inverter, the ZVS operation is achieved without any additional auxiliary circuit. The ZVS method of HPWM is simple and easy to implement, the voltage stress is not increased ,the turn on loss of main switches is reduced significantly , higher efficiency and reliability are offered . A detailed analysis and the ZVS condition of the proposed inverter are presented. In addition, the deficiency existing in the scheme and the resolving scheme are presented.The scheme is verified on a 50kHz,1000VA inverter。
Keyword:HPWM, soft-switching, inverter, ZVS
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