Title :
Multi-phase DC-DC converter with Bi-directional power flow ability for distributed generation system
Author :
Xu, Haiping ; Peng, Fang Z. ; Kong, Li
Author_Institution :
Dept. of ECE, Michigan state Univ., East Lansing, MI
Abstract :
Based on PEBB concept, a multi-phase bi-directional DC-DC converter is proposed. The signal flow graph SFG models for CCM and DCM mode with positive power flow or reverse power flow are deduced. The dual closed loop controller are designed to improve system stability and dynamic performance. The current/voltage ripples are analyzed thoroughly. The design of coupled inductors is given. Finally, a prototype of 150 kVA bi-directional DC-DC converter is developed. With this converter system, the high output voltage and high current is possible with low cost. Experimental results are provided to confirm the analysis and control concept.
Keywords :
DC-DC power convertors; closed loop systems; distributed power generation; graph theory; load flow; bidirectional power flow ability; current-voltage ripples; distributed generation system; dual closed loop controller design; multiphase DC-DC converter; signal flow graph; system stability; Bidirectional control; Control systems; DC-DC power converters; Distributed control; Flow graphs; Inductors; Load flow; Power system modeling; Stability; Voltage; Bidirectional; DC-DC Converter; Distributed generation; Multi-Phase;
Conference_Titel :
Power Electronics Specialists Conference, 2008. PESC 2008. IEEE
Conference_Location :
Rhodes
Print_ISBN :
978-1-4244-1667-7
Electronic_ISBN :
0275-9306
DOI :
10.1109/PESC.2008.4592370
