Design a PID-like Fuzzy Controller on DSP Based DC/AC Inverter

• Main Authors: Wu Chung-Yi, 吳重毅
• Other Authors: C. W. Tao
• Format: Others
• Language: en_US
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/5jwy98

碩士 === 國立宜蘭大學 === 電機工程學系碩士班 === 102 === In this paper, a PID-like fuzzy controller is implemented into a new ZVS-PWM inverter by a digital signal processor (DSP). Through the sinusoid pulse-width-modulation (SPWM) technique, the inverter’s switches can achieve soft-switching feature which can largely reduce the switching losses and improving the converting efficient. And with the PID-like fuzzy controller which its designing complexity is significantly reduced compare with the traditional fuzzy controller. From the results, it’s proven that the PID-like fuzzy controller is not only can stabilize the output at 110V rms but can improve the respond performance when the system load has been changed from 600 ohm to 100 ohm. Comparing with the traditional PID controller, the responding speed can be improved by 75% in simulating, and the speed still can be improved by 35% in the practice experiment.