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This paper focuses on energy management of a hybrid system which includes a wind generator as a primary energy source, a proton exchange membrane fuel cell (PEMFC) as energy source with slow dynamics and a supercapacitor (SC) as a fast dynamics storage system. All these devices are connected to a common DC bus and a variable load. The objective of this work is to elaborate a control algorithm of the...
In this paper we present a new sensorless control for Wind Energy Conversion System (WECS) based on Doubly Fed Twin Stator Induction Generator (DFTSIG). The aim of this control is to extract the maximum wind power and to control the power generation only by measuring phase voltages and currents. The proposed control scheme is ensured without the need of using any rotor speed or wind sensors from the...
In this paper, a multiobjective evolutionary algorithm (MOEA) to solve optimal reactive power (VAR) dispatch problem with flexible AC transmission system (FACTS) devices is presented. This nonlinear multiobjective problem (MOP) consists to minimize simultaneously real power loss in transmission lines and voltage deviation at load buses, by tuning parameters and location of FACTS. The constraints of...
In this paper genetic algorithm (GA) is applied in order to design a PSS/AVR controllers with the goal of improving both transient stability and voltage regulation of power system under a symmetrical three-phase short circuit fault. A comparison based on simulation is then performed between the proposed approach and the classical controllers (manual control, AVR with no PSS, AVR with PSS). The simulation...
This paper presents an approach to develop a simple reduced speed observer for permanent magnet synchronous generator (PMSG) in wind energy conversion system (WECS). The speed and rotor position estimation of the PMSG are obtained by only measuring phase voltage and current. Maximum wind energy extraction is achieved by running the wind turbine generator in variable-speed mode. The rotor speed is...
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