نتایج جستجو برای: electric power factor
تعداد نتایج: 1412942 فیلتر نتایج به سال:
the renewable energy sources and plug-in electric vehicles (pevs) are becoming very popular because of the combination of high fuel costs and concerns about emission issues. this paper presents modelling and control of a building integrated fuel cell and plug-in electric vehicles (bifc-pev) in smart distribution systems. in bifc-pev system, conventional building elements could be replaced by sp...
In this paper, parking lots with bidirectional power flow capability, is used as an achievements of smart power systems. Based on operating conditions, electric vehicles can be considered as a load or generator. For optimal operation of power systems, allocation of these novel units is also necessary same as other distributed generation. In this paper, an optimization problem is proposed for...
With the progress of power electronic devices in electric railway, harmonics in power systems become increasingly of concern. This paper presents a case study on harmonics in a traction power supply system. The study was based on measurements realized in an electrical drive station using a data acquisition system and a computer. It was analyzed the main power quality indicators: the power facto...
We analyze investments in gas fired power plants under stochastic electricity and gas prices. A simple but realistic two-factor model is used for price processes, enabling analysis of the value of operating flexibility, the opportunity to abandon the capital equipment, as well as finding thresholds for energy prices for which it is optimal to enter into the investment. Our case study, using rea...
Optimization of specific power of axial flux permanent magnet brushless DC (PMBLDC) motor based on genetic algorithm optimization technique for an electric vehicle application is presented. Double rotor sandwiched stator topology of axial flux permanent magnet brushless DC motor is selected considering its best suitability in electric vehicle applications. Rating of electric motor is determined...
The adaptive power management strategy is developed for a four-mode plug-in hybrid electric vehicle in this paper. For a given driving pattern, dynamic programming is employed to obtain the global optimum as the performance upper bound to benchmark the proposed strategy. A selforganizing fuzzy controller is used to adaptively adjust the equivalence factor for converting the electric power usage...
Electric power industry have always try to provide reliable electricity to customers and at the same time decrease system costs. High Voltage circuit-breakers are an essential part of the power network. This study has developed a maintenance and replacement scheduling model for high voltage circuit- breakers that minimize maintenance costs while maintaining the acceptable reliability. This mo...
the computer simulation program of a practical scale reverse electrodialysis process has been developed based on the program for saline water electrodialysis. the program is applied to compute the performance of an industrial-scale reverse electrodialysis stack (effective membrane area s = 1 m × 1 m = 1 m2, cell pair number n = 300 pairs). the stack operatingconditions are optimized. seawater a...
Routine power quality (PQ) monitoring is limited to a statistical sample of sites that are hopefully representative of the overall PQ performance of the network. It would be helpful if the PQ performance of un-monitored sites could be inferred from the results of a PQ survey from a site having similar physical characteristics. This is only possible if it is known which physical characteristics ...
Abstract: In this paper, we develop a novel electric power supply chain network model with fuel supply markets that captures both the economic network transactions in energy supply markets and the physical network transmission constraints in the electric power network. The theoretical derivation and analysis are done using the theory of variational inequalities. We then apply the model to a spe...
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