نتایج جستجو برای: electrical machines

تعداد نتایج: 252093  

Journal: :Energies 2021

Superconductor technology has recently attracted increasing attention in power-generation- and electrical-propulsion-related domains, as it provides a solution to the limited power density seen by core component, electrical machines. Superconducting machines, characterized both high efficiency, can effectively reduce size mass compared conventional machine designs. This opens way large-scale pu...

Journal: :IEEE Transactions on Energy Conversion 2021

Manufacturing processes such as cutting, welding and shrink fitting are known to degrade the magnetic properties of electrical sheet during manufacturing machines. These effects often neglected at design stage lead large errors in simulated measured core losses machine. This article studies comparative impact different on stator a typical industrial motor. Both simulations measurements indicate...

Journal: : 2021

Photovoltaics have more attraction day by due to increasing technologies and decreasing prices. However, in practice, the applicants encounter fundamental problems such as shadow effects degradation. Due these problems, amount of produced annual electricity decreases considerably. Moreover, it is not easy understand if company's PV satisfies requirements or appropriate for application. In order...

Journal: :IEEE Transactions on Industry Applications 2021

Modern electrical machines employed in transportation applications are required to provide high performance terms of power (and torque) density. At the same time, being these safety-critical, a significant level reliability and/or fault tolerance is expected. Among all factors which can compromise motors reliability, partial discharges (PDs) inception one most crucial, particular for low voltag...

Journal: :int. journal of mining & geo-engineering 2015
hasel amini khoshalan seyed rahman torabi seyed hadi hoseinie behzad ghodrati

earth pressure balance tunnel boring machines (epb-tbms) are favorably applied in urban tunneling projects. despite their numerous advantages, considerable delays and high maintenance cost are the main disadvantages these machines suffer from. reliability, availability, and maintainability (ram) analysis is a practical technique that uses failure and repair dataset obtained over a reasonable ti...

2007

In 2001, Power Electronics and Electric Machines program was fully developed in electrical and computer engineering department at Cleveland State University. To support newly developed curriculum, state of the art Power Electronics and Electric Machines Laboratory has been established. This effort has been supported by National Science Foundation (award # 0410912), Nasa Glen Research Center and...

2011
Virgil Chindris Rares Terec Mircea Ruba Loránd Szabó Pavol Rafajdus

Simulations are widely used in the study of both electrical machines and drives. In the literature, several simulation approaches can be found which can be also applied in the study of the switched reluctance motors (SRMs). The on-line SRM simulation tool developed by the authors and presented in this paper proved to be very useful both in checking the design of the motor, but also in setting u...

2000
HAO QI

This paper presents a new genetic algorithm with tabu list and sharing scheme for optimizing the design of electrical machines. The design problem was formulated as a multimodal function optimization problem. All the obtained solutions are divided into clusters before being judged by a trained neural network to decide which solution is optimal. From the results of examples, as well as compariso...

Cloud computing is a result of the continuing progress made in the areas of hardware, technologies related to the Internet, distributed computing and automated management. The Increasing demand has led to an increase in services resulting in the establishment of large-scale computing and data centers, in addition to high operating costs and huge amounts of electrical power consumption. Insuffic...

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