A Design of a DC AC Inverter Using a Modified ZVS PWM Auxiliary Commutation Pole and a DSP Based PID Like Fuzzy Control
In this paper, a modified zero voltage switching pulsewidth modulation inverter with a digital signal processor based proportional integral derivative (PID) like fuzzy controller (PIDFC) is implemented. The switches of the inverter can achieve a soft switching feature that can largely reduce switching losses and improve the converting efficiency. In order for the online control of the proposed dc ac inverter to be feasible, a fuzzy control is designed to be a PID like fuzzy mechanism with the complexity significantly reduced. From the results, it is shown that the PIDFC can not only stabilize the output at 110 V rms but can also improve the performance when the system load has been changed from 600 to 100 <inline formula><tex math notation="LaTeX"\Omega$/tex math>/inline formula> Comparing with a traditional PID controller, the responding speed can be improved by 75% in the simulation, and the speed can still be improved by 35% in the practice experiment.
IEEE Transactions on Industrial Electronics