Title :
Common-mode voltage reduction method modifying the distribution of zero-voltage vector in PWM converter/inverter system
Author :
Lee, Hyeoun-Dong ; Sul, Seung-Ki
Author_Institution :
R&D Center, Hyundai Motor Co., Kyungki, South Korea
Abstract :
This paper proposes a new space-vector pulsewidth modulation (PWM) strategy that can restrict the common-mode voltage within one-third of DC-bus voltage in a PWM converter/inverter system with the synchronization of the switching sequence. In this paper, the generation of the common-mode voltage pulse whose magnitude reaches two-thirds of DC-bus voltage is investigated and the elimination method of this voltage pulse is presented. The proposed method can be easily implemented in software and requires no extra hardware without degradation in control performance of PWM converter/inverter-fed AC motor drives
Keywords :
AC motor drives; AC-DC power convertors; DC-AC power convertors; PWM invertors; PWM power convertors; rectifying circuits; switching circuits; synchronisation; AC motor drives; DC-bus voltage; PWM converter/inverter system; common-mode voltage pulse elimination; common-mode voltage reduction; software; space-vector pulsewidth modulation strategy; switching sequence synchronization; AC motors; Degradation; Hardware; Pulse generation; Pulse inverters; Pulse width modulation converters; Pulse width modulation inverters; Software performance; Space vector pulse width modulation; Voltage;
Journal_Title :
Industry Applications, IEEE Transactions on
