Design of mode switching scheme for low-voltage ride-through of doubly fed induction generators

作者：Wei Feng^*; Vilathgamuwa Don Mahinda; Shing Choi San

来源：IET Renewable Power Generation, 2015, 9(2): 109-119.

DOI：10.1049/iet-rpg.2013.0356

A mode switching doubly fed induction generator (MSDFIG) scheme is proposed for the purpose of achieving low-voltage ride-through for wind turbines. The MSDFIG operates as a doubly fed induction generator (DFIG) under normal condition but upon the detection of a low-voltage incident, the generator is to smoothly transfer to operate under the induction generator mode through the switching in of a set of stator-side crowbar. The MSDFIG automatically reverts back to the DFIG mode when network voltage recovers. A new strategy on the control of the crowbar resistance is included. Analysis shows that the proposed MSDFIG scheme can ride through the complete low-voltage and voltage recovery stages. Effectiveness of the scheme is demonstrated through simulation and experiment studies.

• 出版日期2015-3
• 单位南阳理工学院