Results 11 to 20 of about 1,054,007 (248)

The electromagnetic performance of brushless permanent magnet DC motors - with particular reference to noise and vibration. [PDF]

open access: yes, 1991
A comprehensive analytical technique is developed for predicting the instantaneous magnetic field distribution in radial-field, surface-mounted permanent magnet brushless DC motors under any load condition and commutation strategy.
Zhu, Zi-Qiang
core   +6 more sources

The possibility of using permanent magnets without rare earth elements in electric motors

open access: yesИзвестия высших учебных заведений: Проблемы энергетики, 2022
THE PURPOSE. The use of rare earth permanent magnets in electric motors has become commonplace. The use of rare earth magnets in electric motors, such as neodymium (NdFeB), gives a significant increase in the characteristics of the electric motor.
A. A. Маiorov, A. R. Safin
doaj   +1 more source

Computation of the voltage-driven flux-MMF diagram for saturated PM brushless motors [PDF]

open access: yes, 2005
The flux-MMF diagram or "energy conversion loop" is a powerful tool for computing the average torque of saturated permanent-magnet brushless motors, especially when the assumptions underlying classical dq theory are violated, as they often are in modern ...
McGilp, M.I.   +3 more
core   +8 more sources

A Review of Electric Motors with Soft Magnetic Composite Cores for Electric Drives

open access: yesEnergies, 2023
Electric motors play a crucial role in modern industrial and domestic applications. With the trend of more and more electric drives, such as electric vehicles (EVs), the requirements for electric motors become higher and higher, e.g., high power density ...
Youguang Guo   +6 more
doaj   +1 more source

Characteristics of Hydraulic and Electric Servo Motors

open access: yesActuators, 2022
Until the 1970s, hydraulic actuators were widely used in many mechanical systems; however, recently, electric motors have become mainstream by virtue of their improved performance, and hydraulic motors have largely been replaced by electric motors in ...
Sayako Sakama   +2 more
doaj   +1 more source

Destruction of electrical insulating structures of electric motors during various drying techniques [PDF]

open access: yesE3S Web of Conferences, 2020
The paper discusses the problem of drying electric motors in a humid environment. The study considers the influence of oven, current, electroosmotic, convective-electroosmotic drying methods on defect formation in electrical insulating materials of ...
Bashirov M.   +4 more
doaj   +1 more source

Noise in Electric Motors: A Comprehensive Review

open access: yesEnergies, 2023
Electric machines are important devices that convert electrical energy into mechanical energy and are extensively used in a wide range of applications. Recent years have seen an increase in applications where electric motors are used. The frequent use of
Patxi Gonzalez   +2 more
doaj   +1 more source

On the Issue of Increasing Reliability of Electric Mining Machinery [PDF]

open access: yesE3S Web of Conferences, 2020
The paper considers conditions of mining machinery electric drives operation and analyzes the causes of insufficient reliability. To improve the reliability and efficiency of induction motors the authors propose the computer system designed for dynamic ...
Kashirskikh Veniamin   +2 more
doaj   +1 more source

New trends in electric motors and selection for electric vehicle propulsion systems

open access: yesIET Electrical Systems in Transportation, 2021
The increase in the numbers of electric vehicles (EVs) is seen as an upgrading of the existing vehicles for various reasons. This calls for an in‐depth analysis of the heart of these vehicles—the motor. A motor in an electric vehicle propulsion system is
Sreedhar Madichetty   +2 more
doaj   +1 more source

The Laboratory Analysis of the Thermal Processes Occurring in Low-Voltage Asynchronous Electric Motors

open access: yesEnergies, 2021
The exact nature of thermal processes occurring in an electric motor is often unknown. Thus, the estimation of temperature rise using mathematical models and computational experiments is becoming increasingly important. Thermal analysis is the key design
Łukasz Nogal   +5 more
doaj   +1 more source

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