Title :
Static and dynamic response of a parallel-module high power-factor converter system with current-balancing controllers
Author :
Kohama, Teruhiko ; Ninomiya, Tamotsu ; Wakamatsu, Masamichi ; Shoyama, Masahito
Author_Institution :
Dept. of Electron., Kyushu Univ., Fukuoka, Japan
Abstract :
Steady-state and dynamic characteristics of a parallel-module high power-factor converter system are discussed. The current imbalance occurs when using the parallel connection of converter modules. To solve this problem a current-balancing controller is utilized and its effectiveness is confirmed by experiment. Two types of current-balancing controllers, i.e., voltage reference control method and current reference control method, are compared. Stability of the current-balancing control loop in the PFC converter system is investigated by using a small-signal model. As a result, the current reference control method is more stable and has a faster transient response when compared with the voltage reference control method
Keywords :
DC-DC power convertors; control system synthesis; controllers; electric current control; power factor correction; stability; transient response; voltage control; current imbalance; current reference control; current-balancing control loop; current-balancing controllers; dynamic response; parallel connection; parallel-module high power-factor converter; power factor correction; small-signal model; stability; steady-state response; transient response; voltage reference control; Control systems; DC-DC power converters; Power system modeling; Rectifiers; Stability; Static power converters; Steady-state; Stress control; Switching converters; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 1996. PESC '96 Record., 27th Annual IEEE
Conference_Location :
Baveno
Print_ISBN :
0-7803-3500-7
DOI :
10.1109/PESC.1996.548733
