Design guidelines using selective harmonic elimination advanced method for DC-AC PWM with the Walsh transform

摘要

The use of the Walsh transform in DC-AC PWM\udwaveform generation allows the calculation of the switching\udangles by means of linear equations which depend on the\udfundamental amplitude. However, when it is needed a wide\udregulation of the fundamental amplitude, conventional\udapplication of Walsh transform forces to switch among different\udequation sets, due to the range limitation of each one of them. In\udthis paper it is described an advanced method to obtain the\udswitching angles that permits full regulation of the fundamental\udamplitude, with only a switching interval vector, in single phase\udsystems. The paper shows Matlab simulation results that proof\udthe efficiency of the advanced method algorithm