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A deadbeat power control scheme for doubly-fed induction generator for variable speed wind power generation was proposed. The deadbeat power control uses the stator field oriented and the controller calculates the voltage vector to be supplied to the rotor in order to eliminate the active and reactive power errors in each period. Experimental results are presented for validation of the deadbeat controller...
With the development of modern wind energy generation, higher requirements to the grid in case of a failure were raised. In order to faciliate the recovery of power, while voltage dips in a certain range, protecting the rotor side converter and providing reactive power to the grid are both needed according to the requirements. This paper takes DFIG for example, in order to protect the rotor side converter,...
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...
According to the mathematical model of the doubly-fed induction generator (DFIG) and the field-oriented vector-transformation control technique, the control strategy of the variable-speed constant-frequency wind power generator is analyzed which can realize the decoupling control of active power and reactive power of DFIG. On the experimental platform of the DFIG system which is based on TMS320LF2812,...
The reactive power characteristics of doubly fed variable speed constant frequency (DFVSCF) wind power generator are important for grid's voltage stability and generator's low voltage ride-though (LVRT) capability. From the equivalent circuit of doubly-fed induction generator (DFIG), the balance equation of reactive power was deduced. Based on the balance equation, this paper first discussed the reactive...
This paper presents the direct model reference adaptive internal model controller for doubly fed induction generator used in wind farms based on MIT rule adjustment mechanism in addition to Perrin equation adjustment mechanisms with improved internal model controller filter design. Direct model reference adaptive internal model controller is developed and it is tuned using MIT rule adjustment mechanism...
Doubly Fed Induction Generator (DFIG) based wind farms are one of the major contributors to wind power generation. The capability of generating active power over an extended range of speed has made it attractive to maximize the power extraction from wind. This has also facilitated reduction of mechanical stress in the turbine. However recently it has been reported that achieving the maximum power...
Wind power, as an important and promising renewable resource, is widely studied. Recently, doubly fed induction generator (DFIG) becomes more popular in wind power due to its various advantages over other types of wind turbines, such as variable speed, lower power electronic cost and so on. However, the back-to-back converters require effective and accurate control to accommodate the complexity of...
The vector control technique is applied in doubly fed induction generator (DFIG) according to the characteristic of AC-excited variable speed constant frequency (VSCF) wind power generation, a comprehensive control strategy is presented based on grid voltage orientation, which gets the same performances as stator flux orientation, but the stator flux observer can be omitted to simplify the control...
This paper focuses on the development of maximum wind power extraction strategies for variable speed constant frequency (VSCF) grid-connected wind power generation systems with a doubly fed induction generator (DFIG). A new optimal control method is proposed by controlling the generator stator active and reactive power, which is based on the condition of the system operation for not only the extracted...
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