نتایج جستجو برای: electric power factor

تعداد نتایج: 1412942  

Increasing the demand for electric vehicles, makes the manufactures to concentrate on the research of new energy storage devices, electro motors, and power electronic devices. The main subject in designing an electric motorcycle with four-phase AFPM and its full wave converter is to select suitable energy storage system and add on turbo-acceleration mechanism. Choosing the suitable energy stora...

Biglarian, Keshavarz, Mazidi, Najafi,

Many studies have been done on hybrid vehicles in the past few years. The full hybrid vehicles need a large number of batteries creating up to 300 (V) to meet the required voltage of electric motor. The size and weight of the batteries cause some problems. This research investigates the mild hybrid vehicle. This vehicle includes a small electric motor and a high power internal combustion engine...

2013
Murad Ali

Power factor correction (PFC) is a technique of counteracting the undesirable effects of electric loads that create a power factor that is less than one. Power factor correction may be applied either by an electrical power transmission utility to improve the stability and efficiency of the transmission network or correction may be installed by individual electrical customers to reduce the costs...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده برق و کامپیوتر 1385

اتصال بارهای غیر خطی به شبکه قدرت باعث اعوجاج ولتاژ شبکه و در نتیجه کاهش کیفیت شبکهقدرت میگردد. وجود هارمونیکهای ناخواسته در شبکه باعث مشکلاتی از قبیل تلفات خطوط انتقال، کاهش قدرت مفید قابل انتقال، اختلال در کارایی سیستمهای مخابراتی و ... میشود. با افزایش هارمونیکها در شبکه، استاندارهای مختلفی برای بهبود کیفیت شبکه قدرت معرفی گردیده است. در این استانداردها، محدودیتهایی بر تزریق ها هارمونیک توسط...

2016
Yonghua Li Jun Wang Weiping Yan

In China, coal combustion to generate electric power is the primary method, the energy-saving and emission reduction is the urgent task. At present, the energy-saving dispatching trial method in some area evaluates energy-saving and emission reduction of coal combustion power generation according to power supply coal consumption rate only. But the power supply coal consumption rate can’t reflec...

2003
R. Çağlar E. Ayaz S. Şeker E. Türkcan

This paper presents an electric power monoring based on Artificial Neural Network (ANN) for the nuclear power plants. The Recurrent Neural Networks (RNN) and the feed-forward neural network are selected for the plant modeling and anomaly detection because of the high capability of modeling for dynamic behaviors. Two types of Recurrent Neural Networks (RNN) are used. The first one Elman type of ...

ژورنال: سنجش و ایمنی پرتو 2018

In the extremely low frequency range (3 to 300 Hz), the intensities of electric and magnetic fields increase with increasing voltage and current. If the intensities of electric and magnetic fields are high compared with standard exposure limits, they can have harmful effects on human health. In the vicinity of power lines and high voltage power stations, the intensities of these fields are usua...

Journal: :amirkabir international journal of modeling, identification, simulation & control 2014
m.h. ranjbar jaferi s.m.a. mohammadi m. mohammadian

based on the problems caused by today conventional vehicles, much attention has been put on the fuel cell vehicles researches. however, using a fuel cell system is not adequate alone in transportation applications, because the load power profile includes transient that is not compatible with the fuel cell dynamic. to resolve this problem, hybridization of the fuel cell and energy storage device...

Power system restructuring has increased the take part distribution side of power system in providing power. Extensive influence of distribution resources for generation power in distribution side of power system and transferring power electricity between retailer and household consumers are the reason of that.  Among  different types of distributed resources, micro combined heat and ...

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