نتایج جستجو برای: Motors

تعداد نتایج: 13272  

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2009
Yan Chai Stefan Klumpp Melanie J I Müller Reinhard Lipowsky

We study the traffic of two types of molecular motors using the two-species asymmetric simple exclusion process (ASEP) with periodic boundary conditions and with attachment and detachment of particles. We determine characteristic properties such as motor densities and currents by simulations and analytical calculations. For motors with different unbinding probabilities, mean-field theory gives ...

This paper explores the theory and potential of a family of reluctance motors as well as brief review of different types of reluctance motors, motivated by the increased demands for geometric versatility and ruggedness for electric motors. This paper presents a new and novel disc type reluctance motor that has been designed built, tested, and analyzed. The magnetic circuit-based analysis shows ...

Journal: :journal of advances in computer research 0

permanent magnet synchronous motors are efficient motors, which have widespread applications in electric industry due to their noticeable features. one of the interesting applications of such motors is in underwater vehicles. in these cases, reaching to minimum volume and high torque of the motor are the major concern. design optimization can enhance their merits considerably, thus reduce volum...

Journal: :international journal of electrical and electronics engineering 0
m. ghaseminezhad a. doroudi s.h. hosseinian

voltage fluctuation is one of the important types of power quality aspects originated from heavy fluctuating loads. this phenomenon can influence the behavior of induction motors, produce excessive vibration and increase the ohmic losses. in this paper a simplified model to evaluate the electrical characteristics of three phase induction motors under voltage fluctuation conditions will be prese...

ژورنال: انرژی ایران 2019

Due to low cost, evaporative coolers are used in most of the central regions and in the warm and dry climate of Iran and are considered as one of the major consumers of electrical power. Most evaporative coolers use single-phase induction motors by connecting directly to the power grid. But their eefficiency is very low, and their replacement with high efficiency electric motors is considered b...

Single-phase induction motors have a wide range of domestic and industrial applications. These motors have a squirrel cage rotor and their stator usually has two windings: main and auxiliary. The use of auxiliary winding in the structure of single-phase induction motors creates two unbalance and asymmetric phases. This causes to increase the spatial harmonics of the field in the air gap, and al...

Nowadays study of input voltage quality on induction motors behavior has become a controversial subject due to the wide application of these motors in the industry. The impact of grid voltage fluctuations on the performance of induction motors can be included in this area. The majority of papers devoted to the influence of voltage fluctuations on the induction motors are focusing only on the so...

Journal: :the modares journal of electrical engineering 2003
ali jafari mahmud reza haghifam

in this research using the theory of induction motor (um), a um with liquid as secondary part is planned and manufactured. the main objective for planning of this motor is to investigate the possibility of chemical liquids pumping such as liquid poison and acids. results of many laboratory tests are shown to conclude that pumping force in the manufactured pump is dependent on many factors su...

Journal: :سالمند 0
کامیار قصیری kamiar ghoseiri faculty of rehabilitation, iran university of medicalsciences, tehran, iranدانشکده علوم توانبخشی، دانشگاه علوم پزشکی تهران.تهران، ایران احلام باوی ahlam bavi faculty of architecture and urbanism, iran university of science and technology,tehran, iranدانشگاه علم و صنعت ایران گلاویژ قصیری galavij ghoseiri faculty of medicine, qazvin university of medical sciences, qazvin, iranدانشکده پزشکی، دانشگاه علوم پزشکی قزوین

objectives: the authors of this paper hypothesized that vibration stimulation applied by a vibratory orthosis improves balance in patients with parkinson’s disease (pd). in this study we evaluate this hypothesis. methods & materials: fourteen pd patients (12 male and 2 female) with mean age of 59.9±9.1 (±sd) years were participated in this cross- sectional study. using biodex balance system, th...

Journal: :international journal of advanced design and manufacturing technology 0
ali jabbari mohsen shakeri ali navabi niaki

several approaches are available to reduce pulsating torque components in permanent magnet motors. one of the known techniques is stator tooth shape modifications. this paper presents an integrated algorithm applicable for tooth shape optimization of permanent magnet motors. this method focuses on the reduced basis technique, finite element analysis and taguchi method and is conducted on tooth ...

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