Title :
Design of a soft-switched three-port converter with DSP control for power flow management in hybrid fuel cell systems
Author :
Tao, H. ; Kotsopoulos, A. ; Duarte, J.L. ; Hendrix, M.A.M.
Author_Institution :
Eindhoven Univ. of Technol.
Abstract :
A zero-voltage-switched three-port bidirectional converter which is able to handle wide input voltage ranges such as fuel cells and supercapacitors is presented in this paper. The converter consists of three active bridges coupled by a three-winding transformer. A simplified duty cycle control method is introduced to extend the soft-switching range. The system is modeled and a dual-PI-loop control strategy is proposed to achieve regulated output voltage and power flow management. In addition, the soft start-up procedure for the converter is discussed. Simulation and experimental results on a 1 kW prototype verify the effectiveness of the proposed converter and its control strategy
Keywords :
PI control; bridge circuits; design engineering; digital control; digital signal processing chips; fuel cell power plants; load flow; load management; power generation control; power transformers; supercapacitors; switching convertors; transformer windings; voltage control; DSP control; dual-PI-loop control; duty cycle control method; hybrid fuel cell systems; output voltage regulation; power flow management; soft-switched three-port converter; supercapacitors; three active bridges; three-winding transformer; Bridge circuits; Control systems; Digital signal processing; Energy management; Fuel cells; Load flow; Power system management; Power system modeling; Supercapacitors; Voltage control; Converter control; DSP; Fuel cells system; Supercapacitor; ZVS converter;
Conference_Titel :
Power Electronics and Applications, 2005 European Conference on
Conference_Location :
Dresden
Print_ISBN :
90-75815-09-3
DOI :
10.1109/EPE.2005.219309
