نتایج جستجو برای: state power
تعداد نتایج: 1296009 فیلتر نتایج به سال:
Under the smart grid environment, demand response resources (DRRs) are introduced as a virtual power plant to enhance power system adequacy. DRRs often fail to reduce their load due to some external factors. In this paper, a reliability model of a DRR is constructed as multi-state conventional generation units, where the probability, frequency of occurrence, and departure rate of each state can...
Al -e- Muhtaj were one of the local rulers of Chaghanian region in upper part of the Oxus (Amu Darya) that had autonomy concurrent with period of Amir Ismaʽil Samani (279-295 AH) in their dominated area, i.e. parts of Khorasan and Rey. This local dynasty as puppet of Samanids, had effective role in political and military power of that state. Honesty and courage of emirs of this clan, including...
This paper presents a new approach for single-phase shunt active power filter with LCL output filter based on the two-loop control theory. In this method unlike the conventional two loop control, internal loop stability theorem with considering delay effect is studied. Moreover, an observer based on the Kalman-filter is combined with the proposed control scheme, to reducing the numbers of power...
In this study polycrystaline samples of Y1-2xCaxThxBa2Cu3O7-δ with x=0, 0.025, 0.05, 0.075 were made by standard solid state methods. The transport and superconducting properties have been studied by the thermoelectric power S(x,T) measurements as a function of temperature and doping concentration. The critical temperature decreased linearly by increasing the doping concentration. S(x,T) was a...
Distributed generation (DG) will play an important role in future power generation systems, especially in stand-alone applications. Three phase four-leg inverter is a well-known topology which can be used as an interface power converter for DGs. Thanks to the fourth leg to provide the neutral path, the four-leg inverter is able to supply balanced loads as well as unbalanced loads. In this paper...
In this paper, a new type of multi-variable compensation control method for the wind energy conversion systems (WECS) is presented. Based on wind energy conversion systems, combining artificial neural network (ANN) control and PID, a new type of PID NN intelligent controller for steady state torque of the wind generator is designed, by which the steady state torque output is regulated to track ...
A new Multi-Stage Fuzzy (MSF) controller based on Multi-objective Harmony Search Algorithm (MOHSA) is proposed in this paper to solve the Load Frequency Control (LFC) problem of power systems in deregulated environment. LFC problem are caused by load perturbations, which continuously disturb the normal operation of power system. The objectives of LFC are to mini small size the transient deviati...
Fuel cells belong to an avant-garde technology family for a wide variety of applications including micro-power, transportation power, stationary power for buildings and other distributed generation applications. The first objective of this contribution is to find a suitable reduced model of a Solid Oxide Fuel Cell (SOFC). The derived reduced model is then used to design a state estimator. I...
power of the muslim brotherhood after egypt’s revolution of 2011 and effective role in the approval of the constitution in 2012 ,led to be considered the idea of an islamic state by the various media and academic circles . this issue has necessitated need for research on this topic with a focus on the question: what is the idea of an islamic state in the muslim brotherhood's political thou...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید