A New Efficient Algorithm for DC-AC PWM waveform Generation with Full Fundamental Regulation on a Single Linear Equation Set

摘要

The use of the Walsh transform in DC-AC PWM waveform generation allows the calculation of the switching angles by means of linear equations dependent on the fundamental amplitude. Nevertheless, when it is needed a wide regulation of the fundamental amplitude, conventional application of Walsh transform oblige to switch among different equation sets, due to the range limitation of each one of them. In this paper it is described a new way of obtaining the switching angles that permits full regulation of the fundamental amplitude, with only a switching interval vector. Using Matlab, there have been obtained simulation results that proof the efficiency of the proposed algorithm.