Fuzzy Logic Supervisor-Based Primary Frequency Control Experiments of a Variable-Speed Wind Generator

• Published in: IEEE transactions on power systems 2009-02, Vol.24 (1), p.407-417
• Main Authors: El Mokadem, M., Courtecuisse, V., Saudemont, C., Robyns, B., Deuse, J.
• Format: Article
• Language: English
• Subjects: Energy management; Frequency control; fuzzy control; Fuzzy logic; Logic testing; Power generation; Supervisors; Torque control; Velocity measurement; Wind energy generation; Wind power generation; Wind speed
• ISSN: 0885-8950; 1558-0679
• DOI: 10.1109/TPWRS.2008.2007005

In this paper, a primary frequency control strategy based on fuzzy logic, designed for variable-speed wind generators, is proposed and tested on a 2.2 kW test bench. The fuzzy logic supervisor ensures a regular primary reserve for a large range of wind speeds without any wind speed measurement. This supervisor controls simultaneously the generator torque and the pitch angle to keep the primary reserve; it determines in real time the generator power reference value. The fuzzy logic supervisor is compared to a simpler strategy, based only on the control of the generator torque. This classical strategy ensures a regular power reserve only when the wind generator operates at full load, and the generator power reference needs to be determined previously or by the network manager. A procedure for implementing a fuzzy logic supervisor in real time is proposed. The experiments indicate the regularity of the power reserve and the ability to contribute to frequency control.