start-ver=1.4 cd-journal=joma no-vol=13 cd-vols= no-issue=5 article-no= start-page=835 end-page=841 dt-received= dt-revised= dt-accepted= dt-pub-year=1997 dt-pub=19971230 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=An active circuit for cancellation of common-mode voltage generated by a PWM inverter en-subtitle= kn-subtitle= en-abstract= kn-abstract=

This paper proposes an active common-noise canceler (ACC) that is capable of eliminating the common-mode voltage 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 experimental results show that the ACC makes significant contributions to reducing a ground current and a conducted electromagnetic interference (EMI). In addition, the ACC can prevent an electric shock on a nongrounded motor frame and can suppress motor shaft voltage

en-copyright= kn-copyright= en-aut-name=OgasawaraSatoshi en-aut-sei=Ogasawara en-aut-mei=Satoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=AyanoHideki en-aut-sei=Ayano en-aut-mei=Hideki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=AkagiHirofumi en-aut-sei=Akagi en-aut-mei=Hirofumi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University en-keyword=PWM invertors kn-keyword=PWM invertors en-keyword=active networks kn-keyword=active networks en-keyword=amplifiers kn-keyword=amplifiers en-keyword=electromagnetic compatibility kn-keyword=electromagnetic compatibility en-keyword=electromagnetic interference kn-keyword=electromagnetic interference en-keyword=induction motor drives kn-keyword=induction motor drives en-keyword=insulated gate bipolar transistors kn-keyword=insulated gate bipolar transistors en-keyword=interference suppression kn-keyword=interference suppression END