Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title A Simple Static Overmodulation Scheme using Space Vector PWM Method
Authors 李Dong-Myung Lee ; Jin-Ho Kim ; 梁Hyun-Suk Yang ; Jin-Woo Jung
DOI 10.6113/TKPE/2011.16.3.234
Page pp.234-241
ISSN 1229-2214
Keywords SVPWM(Space Vector PWM); Overmodulation; Fourier series Expansion
Abstract This paper proposes a simple static overmodulation strategy that extends the linearity of the inverter output voltage. The proposed method obtains the reference vector having the instantaneous value directly from the modulation index based on the magnitude of fundamental voltage, and has a simplified form of phase command. This method does not need trigonometric functions for calculating the magnitude of the reference vector. The magnitude of reference voltage and holding angle in the overmodulation region corresponding to the modulation index are determined in advance to have the same fundamental voltage magnitude by using the result of Fourier series expansion.