Title :
Follow-up control method in a resonant DC link inverter
Author :
Nozaki, Yousuke ; Kuwata, Yutaka ; Koyashiki, Tohru ; Aoki, Tadahito
Author_Institution :
NTT Interdisciplinary Res. Labs., Tokyo, Japan
Abstract :
This paper describes a new follow-up control method in which a simple digital proportional-integral-differential (PID) filter is applied to a resonant DC link inverter and used as an estimator in the controller. Primary follow-up control can determine the polarity of each resonance voltage at every resonant cycle, and the simple PID filter can allow a high resonant frequency. This results in fast control of the output voltage and allows the inverter to use a smaller AC filter. The output voltage and the distortion factor characteristics are discussed with integral and differential gain as parameters and the stability of the inverter is analyzed by using the state space averaging method. Good agreement between the theoretical and experimental results is obtained.<>
Keywords :
circuit resonance; control system analysis; digital filters; equivalent circuits; invertors; stability; state-space methods; three-term control; voltage control; AC filter; control system analysis; differential gain; digital filters; distortion factor; equivalent circuits; follow-up control; integral gain; output voltage; polarity; resonant DC link inverter; resonant frequency; stability; state space averaging method; three-term control; voltage control; Digital filters; Inverters; Pi control; Proportional control; Resonance; Resonant frequency; Stability analysis; State-space methods; Three-term control; Voltage control;
Conference_Titel :
Power Conversion Conference, 1993. Yokohama 1993., Conference Record of the
Conference_Location :
Yokohama, Japan
Print_ISBN :
0-7803-0471-3
DOI :
10.1109/PCCON.1993.264216
