Abstract |
Several pulse-width modulation (PWM) strategies used to generate the control signal for a single phase transistor inverter are described such as optimum, natural, regular and current-hysteresis ("bang-bang") sampled with two levels (+E, -E) or three levels (+E, 0, -E) control. The performances of the control techniques are analysed by means of minicomputer in terms of voltage waveform, harmonic spectra and performance index. The simulation permits a comparative analysis between the different techniques and displays the principle advantages in order to improve the performances of the power converters. |