Performance Analysis of Mixed Carrier-pulse Width Modulation Scheme

P. Muthukumar ； P. Melba Mary ； V. Deepaprincy ； F. Monica

《Research Journal of Applied Sciences, Engineering and Technology》 8卷23期 (2014/12) Pp. 2356-2362

並列摘要

This study deals with the performance analysis of Pulse Width Modulation (PWM) scheme for three phase voltage source inverter though intermingling of multiple carriers. The proposed PWM scheme using two groups of carriers (inverted Sine wave and Triangle wave), each group having carrier and its 90° shifted. The arbitrary selection of these carriers is based on the linear feedback shift registers value ('0' or '1'). This random carrier selection is serving to improve the spectral quality of the output of the inverter. This improved waveform has been derived from third harmonic injected sine PWM technique. Simulation results confirm the effectiveness of the proposed scheme in providing very less harmonic noises with minimum distortion and satisfactory fundamental component. This study also shows the implementation compatibility of the work with Field Programmable Gate Array environment.

並列關鍵字

Harmonic spread factor ； linear feedback shift register ； pseudo random binary sequence ； random pulse width modulation ； voltage source inverter