A novel sensorless speed controller design for doubly-fed reluctance wind turbine generators. (15th July 2016)

• Record Type: Journal Article
• Authors: Ademi, Sul; Jovanović, Milutin
• Is Part Of: Energy conversion and management. Volume 120(2016)
• Page Start: 229
• Page End: 237
• Publication Date: 2016-07-15
• Subjects: Sensorless speed control -- Reluctance machines -- Reactive power regulation -- Doubly-fed generators -- Wind energy conversion systems; Direct energy conversion -- Periodicals; Energy storage -- Periodicals; Energy transfer -- Periodicals; Énergie -- Conversion directe -- Périodiques; Direct energy conversion; Periodicals; 621.3105
• DOI: 10.1016/j.enconman.2016.04.084
• Languages: English
• ISSNs: 0196-8904

Abstract

Highlights: An emerging brushless doubly-fed reluctance generator for wind turbines considered. A new observer based high-performance sensor-less speed control strategy proposed. Speed and reactive power control experimentally verified on small machine prototype. Smooth and robust response of decoupled field-oriented torque control demonstrated. Excellent disturbance rejection abilities under variable loading conditions shown. Abstract: A brushless doubly-fed reluctance generator has been seen by research communities as a potential solution to higher operation and maintenance costs associated with the compromised reliability of brush compartment of conventional doubly-fed induction generators, while offering comparable performance and similar cost benefits of using a partially-rated power electronic converter in wind power applications. A new flux vector oriented encoder-less scheme for speed and inherently decoupled torque and reactive power control has been proposed and successfully experimentally verified on a small machine prototype by emulating the typical torque-speed operating characteristics of ordinary horizontal-axis wind turbines. The obtained test results have clearly indicated the excellent controller response and disturbance rejection abilities over the entire speed range of interest.