Dynamic Performance of Doubly Fed Induction Generator-Based Wind Turbines during Grid Faults

Bibhu Prasad Nanda

The wound rotor doubly fed electric machine is the only electric machine that operates with rated torque to twice synchronous speed for a given frequency of excitation. In order to evaluate the advantages of this new control proposal, namely VOC-RRF, their performance will may be compared with the response obtained with a classical VOC algorithm by means of PSCAD/EMTDC simulation models. According to grid codes issued by utilities, tripping of wind turbines following grid faults is not allowed. Besides, to provide voltage support to the grid mandatory reactive current supply is necessary. To enable wind turbines ride-through low voltage periods special protection measures have to be implemented. In this paper the behavior of DFIG based wind turbines during grid faults is discussed and elucidated using simulation results. It is shown that with properly designed crowbar and DC-link chopper even zero voltage ride-through is possible.

Select Volume / Issues:

• Volume 3 Issue 6, Nov. 2012

Year:

2012

Type of Publication:

Article

Keywords:

Wind Turbine; Doubly Fed Induction Generator; Fault Ride Through

Journal:

IJECCE

Volume:

3

Number:

6

Pages:

1349-1354

Month:

November