Abstract
Scientists and researchers are exploring different methods of generating and delivering electrical energy in an economical and reliable way, enabling them to generate electricity focusing on renewable energy resources. All of these possess the natural property of self-changing behavior, so the connection of these separate independent controllable units to the grid leads to uncertainties. This creates an imbalance in active power and reactive power. In order to control the active and reactive power in wind turbine generators with adjustable speed, various control strategies are used to allay voltage and current variations. This research work is focused on the design and implementation of effective control strategies for doubly fed induction generator (DFIG) to control its active and reactive power. A DFIG system with its control strategies is simulated on MATLAB software. To augment the transient stability of DFIG, the simulation results for the active and reactive power of conventional controllers are compared with three types of feed forward neural network controllers, i.e., probabilistic feedforward neural network (PFFNN), multi-layer perceptron feedforward neural network (MLPFFN) and radial basic function feedforward neural network (RBFFN) for optimum performance. Conclusive outcomes clearly manifest the superior robustness of the RBFNN controller over other controllers in terms of rise time, settling time and overshoot value.
Highlights
Electrical energy and electrical power systems frameworks play vital roles in the economic development of a country [1,2]
Active power control is considered as a series of regulating process between machine and turbine; if wind speed is sufficient a power controller regulates the pitch angle of the blades to get the maximum amount of torque required to generate maximum power
With different feedforward neural network (FFNN) controllers are discussed in the following
Summary
Electrical energy and electrical power systems frameworks play vital roles in the economic development of a country [1,2]. The actual worry for researchers and system engineers is to lessen misfortunes, and change the execution and reduce the unit cost of generated power [3,4]. Traditional ways to generate electricity rely on gas, oil and coal, which are sparse means [3,5]. Power originating from these assets is very costly, and the lingering of these solutions has a harmful impact on wellbeing as well as polluting the earth [6]. A superior choice is to switch to sustainable assets like sun photovoltaic, biogas energy sources and wind power generation [5,6].
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