DocumentCode :
2719728
Title :
Analysis of converter topological structure for direct-drive wind power system with PMSG
Author :
Zheng Chen ; Xiangning Xiao ; Haitao Wang ; Mengwei Liu
Author_Institution :
Key Lab. of Power Syst. Protection & Dynamic Security Monitoring & control under Minist. of Educ., North China Electr. Power Univ., Beijing, China
fYear :
2010
fDate :
24-28 Oct. 2010
Abstract :
Wind energy has drawn worldwide attention. Because of simple structure, high efficiency, stable operation and other inherent advantages, variable speed constant frequency (VSCF) direct-drive wind power generation system using permanent magnetic synchronous generator(PMSG) is the development trend and one of the focuses of wind power generation system, on which this paper researches through its converter´s topological. To be the interface between PMSG and the grid, typical converter topology structure of direct-driven wind power system with PMSG are analyzed, including the diode rectifier + DC to DC converter + inverter, and the back to back double PWM converter. The topological characteristics and applications of some high-voltage, high-power converters are introduced in detail, including Diode-clamped multi-level converter, Cascaded H-bridge multilevel converter and Flyingcapacitor multilevel converter. Their implementations, working principles, advantages and disadvantages are discussed and compared. Judging from the current situation, for the advantages of low-cost and simple control strategy, diodeclamped three-level PWM converter is the hot spot of current converting technique study for direct-driven wind power system.
Keywords :
DC-DC power convertors; capacitors; electric power generation; invertors; network topology; permanent magnet generators; power convertors; synchronous generators; wind power plants; DC to DC converter; PMSG; back to back double PWM converter; cascaded H-bridge multilevel converter; converter topological structure; converter topology structure; current converting technique; diode rectifier; diode-clamped multilevel PWM converter; direct-drive wind power generation system; flying-capacitor multilevel converter; permanent magnetic synchronous generator; variable speed constant frequency; wind energy; Generators; Pulse width modulation converters; Reactive power; Rectifiers; Topology; Wind power generation; direct-driven wind power system; dual PWM converter; multi-level converter; permanent magnet synchronous generator(PMSG); topological structureof converter;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power System Technology (POWERCON), 2010 International Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4244-5938-4
Type :
conf
DOI :
10.1109/POWERCON.2010.6107965
Filename :
6107965
Link To Document :
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