|
|||||
|
|
A rotor speed estimation algorithm in variable speed permanent magnet synchronous generator wind energy conversion system |
|
| Authors: | Jogendra Singh Thongam Rachid Beguenane Mohammed Tarbouchi Aime Francis Okou Adel Merabet Issouf Fofana Pierre Bouchard |
| Affiliation: | 1. PowerEnerSys Inc., , Chicoutimi, QC, Canada;2. Department of Electrical and Computer Engineering, Royal Military College, , Kingston, ON, Canada;3. Division of Engineering, Saint Mary's University, , Halifax, NS, Canada;4. Department of Applied Sciences, University of Quebec at Chicoutimi, , QC, Canada;5. Department of Renewable Energy Systems, STAS Inc., , Chicoutimi, QC, Canada |
| Abstract: | A rotor speed estimation algorithm in a direct vector controlled permanent magnet synchronous generator wind energy conversion system is proposed. The proposed method is based on a simple equation obtained from the flux model of the machine and contains only stator flux and current. Constant gain recursive least squares estimator is used for implementing the speed estimation algorithm. Rotor position information used for coordinate transformation is computed using the estimated speed. Stator flux information required by the speed estimator is obtained using the stator voltage equation by implementing a programmable low pass filter. The estimated speed is used as the feedback signal for the speed control loop of the vector controlled machine side converter control system whose command speed is obtained from a wind speed sensorless maximum power point tracking controller, thus, we obtain a complete rotor speed and wind speed sensorless permanent magnet synchronous generator wind energy conversion system. Simulation is carried out to validate the performance of the proposed method. Copyright © 2012 John Wiley & Sons, Ltd. |
| Keywords: | permanent magnet synchronous generator speed estimation direct drive wind energy conversion systems sensorless control maximum power point tracking control |