Title :
Sliding mode control for current distribution in DC-to-DC converters connected in parallel
Author :
Donoso Garcia, P.F. ; Cortizo, Porfirio C. ; De Menezes, Benjamim R. ; Mendes, Marcos A Severo
Author_Institution :
Federal Univ. of Minas Gerais, Brazil
Abstract :
This paper presents a novel control scheme for current distribution in parallel connected DC-to-DC converters. It uses a sliding-mode controller (SMC) to achieve both output current equalization and output voltage regulation. The controller improves the dynamic performance of a parallel buck converter: the output voltage is robust against load disturbances and the output currents are very well equalized. An analysis and design of the sliding mode controller is developed. Simulation and experimental results are presented, showing a good dynamic performance of the control scheme proposed
Keywords :
DC-DC power convertors; control system synthesis; controllers; electric current control; variable structure systems; voltage control; DC-to-DC converters; current distribution; dynamic performance; output current equalization; output voltage regulation; parallel buck converter; parallel connected converters; sliding-mode controller; Control systems; Current distribution; DC-DC power converters; Power supplies; Power system reliability; Sliding mode control; Switching converters; Three-term control; Variable structure systems; 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.1996.548782
