Fig.5 shows Bode plot of open-loop gain of voltage control loop with (lower) and without (upper) voltage controller. Gain margin and phase margin of voltage control loop is 26.5 dB and 90 degrees respectively.
Fig.6 shows Bode plot of open-loop gain of power control loop. Gain margin and phase margin of power control loop is 29.7 dB and 180 degrees respectively. Theoretical calculation of transient response for 50 W step command (250W to 300W) is shown in Fig. 7(a). The transient response of the system seems to dominate by single dominant pole. The rise time is approximately 0.11 ms which is corresponding to rise time of a first order system with a corner frequency of 3.18 kHz.