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| A Low Voltage Ride-Through of Strategy for Doubly Fed Induction Generator |
| Yu Lan1, 2, 3, Chen Guocheng1, 2, Song Xiaoliang1, 2, Cao Dapeng1, 2, Wu Guoxiang1, 2 |
| 1. Shanghai University Shanghai 200072 China 2. Shanghai Key Laboratory of Power Station Automation Technology Shanghai 200072 China 3. Shanghai University of Engineering Science Shanghai 201620 China |
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Abstract Grid faults cause series of problems for doubly fed induction generator (DFIG) such as over current in both stator and rotor by using traditional DFIG control methods. In order to solve these problems, DFIG needs low voltage rid through (LVRT) ability. Based on the DFIG characteristics during the symmetric grid fault, this paper proposes DFIG rotor side converter LVRT control method to improve the DFIG over current. Based on theoretic analysis, the modes of LVRT control strategy are established. A 3kW DFIG excitation control experimental system is established. The test results prove the LVRT control method of DFIG to be effective.
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Received: 05 June 2009
Published: 04 March 2014
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2010, Vol. 25 
