Abstract—This paper proposes an active common-noise can-celer (ACC) that is capable of eliminating the common-mode volt-age produced by a pulsewidth modulation (PWM) inverter. An emitter follower using complementary transistors and a common-mode transformer are incorporated into the ACC, the design method of which is also presented in detail. Experiments using a prototype ACC, whose design and construction are discussed in this paper, verify its viability and effectiveness in eliminating common-mode voltage in a 3.7-kW induction motor drive using an insulated gate bipolar transistor (IGBT) inverter. Some experi-mental results show that the ACC makes significant contributions to reducing a ground current and a conducted electromagnetic

文摘：本文提出了一種積極的common-noise canceler(ACC)，可以由pulsewidth調(diào)制(PWM)逆變器消除共模電壓。一個發(fā)射器追隨者使用互補晶體管和一種常見模式變壓器歸并為ACC，
其設(shè)計方法總是被較為詳細的提出。實驗使用一個原型ACC,其設(shè)計和結(jié)構(gòu)在本文中進行了討論,驗證其可行性和更有效的參與消除共模電壓在3.7-kW，使用一個隔離門雙極性電晶體(IGBT)逆變器的感應(yīng)電動機調(diào)速系統(tǒng)中。一些實驗結(jié)果表明,該ACC在減少地進行電流與磁力干涉(EMI)上作出了重大的貢獻。此外,此次ACC可以預(yù)防在不接地電機機架上的電子沖擊,能有效抑制電機機架電機軸電壓。

interference (EMI). In addition, the ACC can prevent an electric
shock on a nongrounded motor frame and can suppress motor
shaft voltage.