Based On A Unified Mathematical Model Of Doubly-fed-type Wind Power Generation System Control Strategy And Its Simulation

Wind power is currently the world's fastest-growing renewable energy. Due to the crisis of energy and environmental pollution, clean and renewable energy resources are attracting more and more interesting, especially wind energy. With the great development in manufacture of power electronic converter and its application technology, the variable speed wind turbine with doubly-fed induction generator has turned into mainstream machine in the field of exploring wind energy in the world now. In this paper, doubly-fed wind power generation system as the research object, based on a unified mathematical model of system integration from the perspective of its composition and related control technology was studied in detail.Fist in the digestion and absorption of doubly-fed wind power generation system-type mathematical model of a unified [28].based on the network side converter, the rotor side converter, power grids, and doubly-fed generator internal operation point of analysis, and general mathematical model of their comparative analysis to select a single mathematical model as the theoretical basis for this article. Second, the article is based on the unified model of doubly-fed wind power generation systems, using non-linear control theory will it control exactly with linearization decoupling analysis, and analysis of control strategy with inverse model of the doubly-fed wind power generation systems. Comparative the general control strategy to it. Using PSCAD/EMTDC platform, has set up a simulation model in this control strategy, and then research on the steady-state and dynamic performance in the simulation model.Finally, the paper made to analyze the simulation results to verity the validity of the uniform model and inverse internal model control strategy.