A performance comparison of a nonlinear and a linear control for grid connected PMSG wind energy conversion system |
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| Affiliation: | 1. Department of Physical, Faculty of Science, Chouaib Doukkali University, Eljadida, Morocco;2. Department of Industrial Engineering, National School of Application Sciences (ENSA-Safi), Cadi Ayyad University, Safi, Morocco;3. Department of Electrical Engineering, Ecole Mohammadia d’Ingénieurs, University Mohammed V Agdal, Rabat, Morocco;1. Laboratoire des Signaux et Systèmes, Supelec, Plateau du Moulon, 91192 Gif-sur-Yvette, France;2. Laboratoire d''Automatique et d''Informatique Appliquée, Département de Genie Electrique, IUT-FV Bandjoun, Université de Dschang, Cameroon;1. Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;2. Department of Electronic and Electrical Engineering, University of Bath, Bath BA2 7AY, UK;1. Department of Electrical Engineering, Kamla Nehru Institute of Technology, Sultanpur 228118, U.P., India;2. Department of Electrical Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur 273010, U.P., India |
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| Abstract: | With the increased penetration of wind energy on modern power systems all over the world, the Wind Farm Systems (WFS) are today required to participate actively in electric network operation by an appropriate generation control strategy. This paper presents a comparative study of two control strategies for wind farm based on Permanent Magnet Synchronous Generator (PMSG) and interconnected to the distribution network. The 4 MW wind farm consists of 2 PMSGs based on 2 MW generators connected to a common DC-bus system. Each PMSG of the WFS is connected to the DC-bus through a rectifier, but the DC-bus is connected to the grid through only one inverter system. The proposed control laws are based on a sliding mode algorithm and classical Proportional Integral (PI) controllers to regulate both generator and grid-side converters. The control strategy combines a pitch control scheme and Maximum Power Point Tracking (MPPT) to maximize the total generated power of WFS. Furthermore, the aim of the control strategy is to maximize the extracted power with the lowest possible impact in the power network voltage and frequency for fault conditions as well as for normal working conditions. Finally, simulation results with Matlab/Simulink environment confirm that the proposed strategy has excellent performance. |
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| Keywords: | Wind farm PMSG MPPT PFC control Nonlinear control Electric network connection |
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