The output voltage in case of sinusoidal PWM can be expressed as

       (12)

The width of the k^th pulse (δ_k) is approximately given by

                                                                                (13)

The value of the starting angle of the k^th pulse (α_k) is given by numerically solving the following equation

                                                                                  (14)

The angles θ and α for a sine PWM with 6 pulses per half cycle are calculated using equations 13 and 14 and listed in Table 1 . The waveforms of the voltage and current are shown in Figure 7.

The r.m.s value of the output voltage is

                                                                                                             (15)

The load for an R-L load is given by

                              (16)