CUED Publications database

Experimental LVRT performance of a 250 kW brushless DFIG

Long, T and Shao, S and Malliband, P and Mathekga, ME and Abdi, E and McMahon, RA and Tavner, PJ (2012) Experimental LVRT performance of a 250 kW brushless DFIG. In: UNSPECIFIED pp. 2031-2036..

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Nowadays, all new wind turbine generators have to meet strict grid codes, especially riding through certain grid faults, such as a low voltage caused by grid short circuits. The Low-Voltage Ride Through (LVRT) capability has become a key issue in assessing the performance of wind turbine generators. The mediumspeed Brushless DFIG in combination with a simplified two-stage gearbox shows commercial promise as a replacement for conventional DFIGs due to its lower cost and higher reliability. Furthermore, the Brushless DFIG has significantly improved LVRT performance when compared with the DFIG due to its inherent design characteristics. In this paper, the authors propose a control strategy for the Brushless DFIG to improve its LVRT performance. The controller has been implemented on a prototype 250 kW Brushless DFIG and test results show that LVRT is possible without a need for any external protective hardware such as a crowbar.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Divisions: Div B > Electronics, Power & Energy Conversion
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:13
Last Modified: 07 Mar 2019 11:16