So, a WTE acts as a test bench for trial and verification of various power electronic converters and wind turbine generators that is otherwise not so economical to have on-field trials.ĭesign of a WTE can involve the use of different types of motors. Moreover, future innovations need thorough testing at laboratory conditions with speculative impacts of wind patterns. This can emulate the characteristics of a WT and help the students to get a practical knowledge about it. Thus, the need for research facility setups for imitating the wind turbine (WT) characteristics emerges.
However, constant on-site interaction for research sort education is not always feasible. Due to this, there is also a revision in the electrical engineering curriculum for the students to get familiar with the real-time scenario. This has helped wind energy to compete with the already established traditional energy sources. Recently, there is a considerable amount of growth in the field of wind energy system due to the various technological advancement and cost reduction through Government incentives. The ever-increasing load demand, depletion of fossil fuel used in conventional sources and the growing concern for the environmental issues due to their adverse effect have led to increase in demand for renewable energy sources. The experimental result analysis confirms that the proposed control scheme improves the imitation of the real-time wind turbine characteristics and performs efficiently under both steady-state and transient conditions. A performance comparison of the proposed SMC with the existing proportional and integral (PI) controller in terms of tracking speed, peak overshoot and settling time are discussed in detail. To validate the performance of WTE prototype, it is tested under various operating conditions.
The static, dynamic characteristics and also the transient responses of the WTE are satisfactorily reproduced by the proposed SMC method. The SMC theory is used here to develop a control law that governs the system to track the reference current set by the mathematical model of the wind turbine to get the desired output. The application of power electronic converters with various control strategies in machine control facilitate the imitation of a practical wind turbine characteristics using a separately excited DC motor. This work deals with the development of a real-time wind turbine emulator (WTE) for laboratory purpose using a robust sliding mode controller (SMC).
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