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In this paper, a real power controller design for wind power generation has been conducted. The wind power station is assumed to be a type of doubly-fed induction generator (DFIG). Zakian's framework has been employed to maximize power output and to limit the system frequency negative impact, concurrently. Under fluctuation of wind speed in two-machine test system, the performances of the design controller...
In this paper, we propose a robust non-linear controller based on a second order sliding mode technique named super-twisting method. The control scheme is proposed to control, in direct form, the electromagnetic torque and stator reactive power of a wound rotor induction generator connected to an infinity bus and coupled with a wind turbine across a gear box. The performance of the designed controller...
This paper presents the emulation of an isolated wind energy conversion system, which is composed by a doubly-fed induction generator, a back-to-back converter connected to its rotor, a LC filter to minimize the harmonic pollution in the generated voltage and an isolated three-phase load. In first instance, the test bench is described and its operational capabilities are introduced. Afterwards, the...
The efficiency of the wind power conversions systems can be greatly improved using an appropriate control algorithm. In this work, a robust control for variable speed wind power generation that incorporates a doubly feed induction generator is described. The electrical systems incorporates a wound rotor induction machine with back-to-back three phase power converter bridges between its rotor and the...
This paper proposes a nonlinear control design technique for wind generation systems that deals with both active power and reactive power at the same time in consideration of the fact that the wind generation system is a high order nonlinear dynamical system. Unlike the existing controller designs, the proposed technique is developed based on original nonlinear models of electric machine and wind...
The design of a pitch control capable to respond to frequency deviations is presented in this paper. The pitch control method reserves a percentage of power extracted from the wind turbine in order to help to mitigate frequency deviations when an extra power is needed. For the purpose of pitch control design, the transfer function of the whole system and an adjust of a controller is needed. Results...
By analyzing the operation behavior of an A.C. excited variable-speed constant-frequency (VSCF) wind-power generator, the field-oriented vector control technique and and the internal model controller (IMC) are transplanted into the voltage control of DFIG.The IMC were transplanted into the cutting-in control of the doubly-fed induction generator with no-load and a novel cutting-in control strategy...
A variable speed wind energy conversion system, with fuzzy control for efficiency optimization and performance enhancement, is discussed in this paper. A squirrel cage induction generator driven by a vertical axis wind turbine feeds the power to a utility grid through two double side pulse width modulated converter system. The generation control system uses three fuzzy controllers. The first fuzzy...
Todaypsilas wind power plants use motor driven pitch control for rotor blades as a standard design feature for obtaining optimum efficiency. In harsh environment, such a control element may be critical in case of fault. In order to avoid total damage of the blades an inherently working pitch control design is proposed. It uses the special composite material properties and an advanced design. In addition,...
The variable speed constant frequency (VSCF) wind power generation system requires the DFIG with characteristics of high response speed as well as strong robustness. Under the mutual effects of internal interference of parametric variation and external interference of load torque oscillation, the dynamic current response of PI control becomes worse, as well as reduced efficiency and stability. Aiming...
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