start-ver=1.4
cd-journal=joma
no-vol=32
cd-vols=
no-issue=5
article-no=
start-page=1105
end-page=1114
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1996
dt-pub=199610
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Modeling and damping of high-frequency leakage currents in PWM inverter-fed AC motor drive systems
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=<p>This paper presents an equivalent circuit for high-frequency leakage currents in pulsewidth modulation (PWM) inverter-fed AC motors, which forms a series resonant circuit. The analysis based on the equivalent circuit leads to such a conclusion that the connection of a conventional common-mode choke or reactor in series between the AC terminals of a PWM inverter and those of an AC motor is not effective to reduce the rms and average values of the leakage current, but effective to reduce the peak value. Furthermore, this paper proposes a common-mode transformer which is different in damping principle from the conventional common-mode choke. It is shown theoretically and experimentally that the common-mode transformer is able to reduce the rms value of the leakage current to 25%, where the core used in the common-mode transformer is smaller than that of the conventional common-mode choke</p>

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=AkagiHirofumi
en-aut-sei=Akagi
en-aut-mei=Hirofumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=Okayama University

affil-num=2
en-affil=
kn-affil=Okayama University
en-keyword=AC motor drives
kn-keyword=AC motor drives
en-keyword=PWM invertors
kn-keyword=PWM invertors
en-keyword=circuit resonance
kn-keyword=circuit resonance
en-keyword=damping
kn-keyword=damping
en-keyword=equivalent circuits
kn-keyword=equivalent circuits
en-keyword=inductors
kn-keyword=inductors
en-keyword=leakage currents
kn-keyword=leakage currents
en-keyword=resonance
kn-keyword=resonance
en-keyword=transformers
kn-keyword=transformers
END