摘  要：盡管常用變頻器已經(jīng)技術(shù)成熟，但仍有待改進(jìn)之處。本文介紹幾項(xiàng)改進(jìn)技術(shù)：基于IGBT整流/回饋的四象限H橋級(jí)聯(lián)頻器；調(diào)速用MMC變頻器；無(wú)刷雙饋調(diào)速；切換型雙饋調(diào)速；基于IGBT和MOSFET混合開(kāi)關(guān)的低壓逆變器。 關(guān)鍵詞：變頻；改進(jìn)技術(shù)；四象限H橋；MMC；雙饋調(diào)速；混合開(kāi)關(guān) Abstract: Although conventional inverter technology has matured, but there is still room for improvement. This article describes several improvements in technology: IGBT rectifier / regenerative four-quadrant H-bridge cascaded in[登陸后可查看全文]