The sinusoidal pulse width modula used to produce the sinusoidal wave pulse waveform with varying w sinusoidal output waveform can be switching frequency and by var frequency of a reference or modu technique it maintains the pulses in maintaining in equal widths as modulation where the distortion fac harmonics (LOH) are significantly depicts the six step inverter compos S6 with each phase connected to th leg.
Fig. 4.1: Three Phas
Fig. 4.2: Control signal gen Figure 4.2 represents the control sig In this we use triangular wave as ca as a reference signal and compare th help of comparator [3]. The sample using sinusoidal pulse width modul output voltage per phase to phase shown in figure 4.3.
tion (SPWM) technique is eform by filtering an output width. A better filtered e obtained by using a high rying the amplitude and ulating voltage. In SPWM different widths instead of s in multi pulse width ctor (DF) and lowest order y reduced. The figure 3.1 sed with six switches S1 to he middle of each inverter