Abstract:
This paper presents the design of active common
mode noise voltage canceler (ACVC) for induction motor drive
with active zero vector pulse width modulation (AZPWM-1).
Conventional pulse width modulation (PWM) like space vector
pulse width modulation (SVPWM) has a peak to peak (PP)
value of common mode voltage (CMV) equal to the DC link
voltage. Compared to conventional PWM, AZPWM-1 reduces
the PP value of CMV by three times. This leads to reduction
in magnetizing inductance of common mode transformer (CMT)
and ratings of components used in ACVC. The aforementioned
modification in ACVC improves the electromagnetic interference
(EMI) performance, reduce the peak value of CMV and ground
current with lower magnetizing inductance of CMT.
