| Title |
A Voltage Vector Synchronization Method for a Renewable Energy System with a Doubly-Fed Induction Generator |
| Authors |
박정우(Park, Jung-Woo) ; 이기욱(Lee, Ki-Wook) ; 김동욱(Kim, Dong-Wook) |
| Keywords |
Wind Turbine ; Tidal Current Power Plant ; DFIG ; Power Control ; Grid Interconnrction |
| Abstract |
In order to transmit energy generated through the stator winding of a doubly-fed induction generator (DFIG), we need to synchronize the generated voltage vector with the grid voltage vector. However, the existing synchronization methods work only when the encoder is installed at a specific position and equivalent constant is precise. In order to solve this problem, a new synchronization method has been proposed and a way of applying the method to existing doubly-fed induction generator control algorithm has been also proposed. The validities of the methods proposed were verified by using a prototype converter for a 1.5MW-class doubly-fed induction generator and experimental results showed the validity of that against variation of an encoder positions, generator parameters, and grid voltages. |