A Speed-Adaptive Reduced-Order Observer for Sensorless Vector Control of Doubly Fed Induction Generator-Based Variable-Speed Wind Turbines

作者：Yang Sheng^*; Ajjarapu Venkataramana

来源：IEEE Transactions on Energy Conversion, 2010, 25(3): 891-900.

DOI：10.1109/TEC.2009.2032589

• Adaptive observer
• doubly fed induction generators (DFIGs)
• parameter sensitivity
• sensorless vector control
• wind energy conversion systems

In this paper, a speed-adaptive reduced-order observer for sensorless vector control of doubly fed induction generators (DFIGs) is proposed. The observer is a simulation of the rotor current dynamic model with feedback of the estimation error and a speed-adaptation loop. Feedback and adaptation gains are designed based on the closed-loop observer model. A parameter sensitivity analysis reveals that this observer is robust against machine parameter variations in the normal operating regions. Simulation results demonstrate desired steady-state and dynamic performance of this sensorless control approach for DFIG-based variable-speed wind turbines.

• 出版日期2010-9