2012•IEEE Transactions on Power ElectronicsRequires access

The Direct-drive Wind Power Generation System's LVRT Technology

Hu Cao

Abstract

To improve fault ride through capability of direct-drive variable-speed constant frequency wind power generation system,DC-link Crowbar circuit is adopted to make wind turbine keep normal when grid voltage sags and to help the system rapidly recover to rated output after fault clearance.The direct-drive wind power system's low voltage ride through(LVRT) program is proposed which based on Crowbar unloading circuit and STATCOM operation strategy and the validity and reliability of the program are verified in the experiment.

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Available abstract

Key concepts: Crowbar, Wind power, Low voltage ride through, Turbine, Fault (geology), Reliability (semiconductor), Electrical engineering, Voltage