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Wind power, as an important and promising renewable resource, is widely studied. Because the wind is highly variable, it is very desirable to operate a wind turbine at variable speeds. In this respect, doubly fed induction generator (DFIG) has become popular in wind power generation system. The steady state simulation analysis of a DFIG is essential to understand the behavior of DFIG such that it...
A detailed computer simulation for interconnecting wind energy system to an electric utility is presented. The proposed system consists of four high rating wind turbines each one uses double fed induction generator (DFIG). Two back to back bidirectional PWM inverters are used in the rotor circuit of each DFIG to be interfaced with the electrical utility. The simulation incorporates a flexible independent...
This paper addresses the representation of a wind power plant, based on wound rotor asynchronous generators, with a centralized voltage controller, by an equivalent transfer function, valid for small signal voltage control studies. This representation allows to investigate the influence of the centralized plant control gain and short circuit ratio on the system stability, for instance, by analyzing...
This paper presents the principle for variable speed constant frequency AC exited wind power system. In the coordinate commutation technology, the AC excited generator's mathematical mode has established under three-phase static coordinate system, thus was carried on the analysis to it that in the independent movement's time situation, built system's simulation module in MATLAB simulation software,...
This paper presents control of doubly fed induction generator for variable speed wind power generation. The control scheme uses stator flux-oriented control for the rotor side converter and grid voltage vector control for the grid side converter. A complete simulation model is developed for the control of the active and reactive powers of the doubly fed generator under variable speed operation. Several...
The synthesis of the mathematics model is done using three S-functions based on state equation, thus simplifying and accelerating the implementation of DFIG. The VSCF DFIG wind power generation is transient response proceeding, which is influenced by operation characteristics of generator before and after grid connection. A complete simulation model of VSCF DFIG wind power generation based on Matlab...
This work considers the seldomly treated case of rotor turn-to-turn fault of a doubly-fed induction generator. This fault can take place where the doubly-fed induction generator is a standard solution in wind power stations. For investigations an error-adoptable three phase machine model is derived and simulated. Furthermore the model is integrated in a wind energy plant model and simulated for a...
Different aspects of reactive power regulation problem in wind farms are presented in this paper. In the first part some background of the reactive power control in wind parks is presented, including motivations for its use and methods that can be used. In general, there are active (wind generator, compensator) and passive methods (L,C) of reactive power compensation. A simulation model of the wind...
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