Title :
Modeling and simulation of a switched reluctance generator system based on variable generation voltage converter
Author :
Zhenguo Li ; Zhao, Na ; Kan, Zhizhong ; Lee, Dong-Hee ; Ahn, Jin-Woo
Author_Institution :
Key Lab. of Power Electron. for Energy Conservation & Motor Drive of Hebei Province, Yanshan Univ., Qinhuangdao, China
Abstract :
When switched reluctance generator (SRG) is operating below its rated speed, the back electromotive force (EMF) may be lower than the excitation voltage, as a result, the phase current will not increase at the generation stage which would reduce the machine utilization coefficient and conversion efficiency of the system. To solve this problem, a variable generation voltage converter is presented in this paper. Compared with the conventional asymmetric bridge converter, the proposed converter needs less power switching devices and can regulate the generation voltage. Besides, the SRG system can achieve low cost and high efficiency below the rated speed. The feasibility and validity of SRG system are verified by mathematical modeling and Matlab simulation.
Keywords :
bridge circuits; power convertors; reluctance generators; Matlab simulation; asymmetric bridge converter; back electromotive force; conversion efficiency; excitation voltage; machine utilization coefficient; phase current; switched reluctance generator; variable generation voltage converter; Bridge circuits; Circuit topology; Costs; DC generators; Power generation; Power supplies; Reluctance generators; Switches; Switching converters; Voltage;
Conference_Titel :
Telecommunications Energy Conference, 2009. INTELEC 2009. 31st International
Conference_Location :
Incheon
Print_ISBN :
978-1-4244-2490-0
Electronic_ISBN :
978-1-4244-2491-7
DOI :
10.1109/INTLEC.2009.5351816
