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As a renewable, clean energy, wind energy has attract more and more attention. It has become a common understanding of the world to vigorously develop wind energy. In order to guarantee the safety and reliability for wind power integration operation, it is of great significance to establish an appropriate wind power generator system model and analyze its electromagnetic transient characteristics....
A novel approach for development of FPGA-based wind turbine control system used in isolated network in a simulation environment was proposed. The software tools in simulation environments, related design procedure and system architecture were presented. Our proposed FPGA-Field-Programmable Gate Array-based wind turbine controller receives external sensor inputs according to the operating conditions,...
Because wind power has the characteristics of random and intermittent, wind turbine output power varies widely. Wind turbines may therefore cause the output power fluctuations and lead to voltage fluctuations, which may cause flicker problems. Based on the features of wind power and characteristics of wind power generators, a mathematical model of Variable speed and constant frequency (VSCF) wind...
This paper introduces a direct power control (DPC) method with narrowband disturbance rejection capability for the grid-connected doubly fed induction generator (DFIG). The method is suited for variable speed operation of DFIG, especially in wind energy conversion systems connected to weak networks where voltage unbalance is common. The control framework is based on the linear quadratic regulator...
Wind power generation system is typical multi-variable, non-linear and too complex to build precise mathematical model. In order to capture maximum energy at certain wind speed range and regulate active and reactive power independently, adaptive fuzzy control based on stator flux-oriented vector control was adopted. The simulation program was written in C compile language and Matlab. The results show...
This paper presents a modified direct power control (DPC) strategy for a doubly fed induction generator (DFIG) based wind power generation system under unbalanced grid-voltage conditions. The strategy is based on the investigation of the mathematic model and the composition of the instantaneous active and reactive power outputted by DFIG. It is found that, by applying a notch filter of two times of...
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