نتایج جستجو برای: traction transformer

تعداد نتایج: 22259  

Journal: :EURASIP J. Adv. Sig. Proc. 2011
Rafael Cauduro Dias de Paiva Jyri Tapani Pakarinen Vesa Välimäki Miikka Tikander

An audio transformer is used in a guitar amplifier to match the impedances of the power amplifier and a loudspeaker. It is important to understand the influence of the audio transformer on the overall sound quality for realistic tube amplifier emulation. This paper proposes to simulate the audio transformer using a wave digital filter model, which is based on the gyrator-capacitor analogy. The ...

M. Heidarzadeh, M. R. Besmi,

Overvoltage distribution along the transformer winding must be uniform to certify the safety of the operation of the power transformer. Influence of the parameters variation on the impulse voltage distribution (IVD) in disk winding transformer is going to be analyzed which hasn’t been analyzed on this type of winding in the previous papers. In this research, a transformer with disk winding and ...

A. Ebrahimzadeh, M. Mirzaie, M. Sefidgaran,

Reliability of a power system is considerably influenced by its equipments. Power transformers are one of the most critical and expensive equipments of a power system and their proper functions are vital for the substations and utilities. Therefore, reliability model of power transformer is very important in the risk assessment of the engineering systems. This model shows the characteristic...

Journal: : 2022

The effects of the magnetic field intensity created around power system equipment on human health are examined by various organizations. Permissible limit values have been determined International Commission Non-Ionizing Radiation Protection (ICNIRP) when people exposed to generated at a low frequency. Accordingly, maximum allowable for public areas and working environments specified as 0.2mT 1...

Journal: :بینا 0
مصطفی سلطان سنجری m soltan sanjari تهران- خیابان ستارخان- بیمارستان حضرت رسول اکرم (ص)- مرکزتحقیقات خلیل قاسمی فلاورجانی kh ghasemi falavarjani تهران- خیابان ستارخان- بیمارستان حضرت رسول اکرم (ص)- مرکزتحقیقات محمدمهدی پرورش mm parvaresh تهران- خیابان ستارخان- بیمارستان حضرت رسول اکرم (ص)- مرکزتحقیقات مهدی مدرس زاده m modarreszadeh تهران- خیابان ستارخان- بیمارستان حضرت رسول اکرم (ص)- مرکزتحقیقات مسعود ناصری پور m naseripour تهران- خیابان ستارخان- بیمارستان حضرت رسول اکرم (ص)- مرکزتحقیقات مسیح هاشمی m hashemi تهران- خیابان ستارخان- بیمارستان حضرت رسول اکرم (ص)- مرکزتحقیقات مرضیه نجومی

purpose: to describe the association between optic disc traction and non-arteritic anterior ischemic optic neuropathy (naion). methods: eighty three eyes of 83 patients with naion were evaluated by optical coherence tomography (oct) for detecting vitreous adhesion to the optic nerve head with separation from adjacent retina (partial posterior vitreous detachment). those who were negative for su...

2009
Gilberto Gonzalez-A Israel Nuñez

A bond graph model of an electrical transformer including the nonlinear saturation is presented. A nonlinear observer for the transformer based on multivariable circle criterion in the physical domain is proposed. In order to show the saturation and hysteresis effects on the electrical transformer, simulation results are obtained. Finally, the paper describes that convergence of the estimates t...

Ansaripour , Rahman , Ghaderipour , Mostafa ,

Abstract: The widespread presence of uncontrolled electric vehicles causes overloading of distribution network equipment. One of these equipments is distribution transformer, which should pay attention to overloading and reducing lifetime of this equipment due to charging of electric vehicles. First, strategies have been proposed to investigate the effect of electric vehicle penetration level a...

Journal: :Journal of Intelligent and Robotic Systems 2006
Pavlos S. Georgilakis John A. Katsigiannis Kimon P. Valavanis Athanasios T. Souflaris

Transformer fault diagnosis and repair is a complex task that includes many possible types of faults and demands special trained personnel. Moreover, the minimization of the time needed for transformer fault diagnosis and repair is an important task for electric utilities, especially in cases where the continuity of supply is crucial. In this paper, Stochastic Petri Nets are used for the simula...

2015
Gurjant Singh Inderpreet Kaur

As an integral part of the Smart Grid, smart transformers both work independently to constantly regulate voltage and maintain contact with the smart grid in order to allow remote administration if needed and to provide information and feedback about the power supply and the transformers themselves. Through a process known as voltage optimization, a smart transformer provides the exact amount of...

Journal: :Medicine and science in sports and exercise 2013
John W Wannop Geng Luo Darren J Stefanyshyn

PURPOSE Football is the most popular high school sport; however, it has the highest rate of injury. Speculation has been prevalent that foot fixation due to high footwear traction contributes to injury risk. Therefore, the purpose of the study was to determine whether a relationship exists between the athlete's specific footwear traction (measured with their own shoes on the field of play) and ...

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