Results 1 to 10 of about 189,725 (256)

Comprehensive Analysis of Influencing Factors of AC Copper Loss for High-Speed Permanent Magnet Machine with Round Copper Wire Windings

open access: yesMachines, 2022
AC copper loss from stator winding is one of the main losses of the high-speed permanent magnet machines (HSPMMs) and directly affects the performance of the machines.
Guanghui Du   +4 more
doaj   +4 more sources

YOT-Net: YOLOv3 Combined Triplet Loss Network for Copper Elbow Surface Defect Detection

open access: yesSensors, 2021
Copper elbows are an important product in industry. They are used to connect pipes for transferring gas, oil, and liquids. Defective copper elbows can lead to serious industrial accidents.
Yuanqing Xian   +4 more
doaj   +4 more sources

Investigation of the Temperature Effects on Copper Losses in Hairpin Windings

open access: yesMachines, 2022
Today, an extensive electrification is occurring in all industrial sectors, with a special interest seen in the automotive and aerospace industries. The electric motor, surely, is one of the main actors in this context, and an ever-increasing effort is ...
Mohammad Soltani   +3 more
doaj   +1 more source

A Position Sensorless Closed-Loop Control Mode of a Three-Phase Hybrid Stepper Motor

open access: yesEnergies, 2022
The demand for the high-performance and low-cost position control actuators in many applications promotes the development of three-phase hybrid stepper motors.
Zhen Peng, Chao Bi
doaj   +1 more source

Losses in Efficiency Maps of Electric Vehicles: An Overview

open access: yesEnergies, 2021
In some applications such as electric vehicles, electric motors should operate in a wide torque and speed ranges. An efficiency map is the contour plot of the maximum efficiency of an electric machine in torque-speed plane.
Emad Roshandel   +4 more
doaj   +1 more source

A Novel In-Situ Measurement Method of High-Frequency Winding Loss in Cored Inductors With Immunity Against Phase Discrepancy Error

open access: yesIEEE Open Journal of the Industrial Electronics Society, 2021
Evaluating the high-frequency winding loss accurately is crucial for the design of modern high-frequency power converters. This paper proposes a novel experimental method to accurately measure the in-situ inductor winding loss, which separates out the ...
Navid Rasekh, Jun Wang, Xibo Yuan
doaj   +1 more source

High-Efficiency Drive Method of Adjustable Field IPMSM Utilizing Magnetic Saturation

open access: yesIEEE Access, 2022
This paper describes a high-efficiency drive method of an adjustable field Interior Permanent Magnet Synchronous Motor (IPMSM) utilizing magnetic saturation.
Kiyohiro Iwama, Toshihiko Noguchi
doaj   +1 more source

Comprehensive Analysis of the AC Copper Loss for High Speed PM Machine With Form-Wound Windings

open access: yesIEEE Access, 2022
The skin effect and proximity effect at high frequencies would greatly increase the AC copper loss of high speed permanent magnet machines (HSPMMs), especially for form-wound windings.
Guanghui Du   +5 more
doaj   +1 more source

Electromagnetic-thermal Coupled Analyses and Joint Optimisation of Electrically-excited Flux-switching Linear Machines

open access: yesCES Transactions on Electrical Machines and Systems, 2022
Electrically-excited flux-switching machines are advantageous in simple and reliable structure, good speed control performance, low cost, etc., so they have arouse wide concerns from new energy field.
Hui Wen   +5 more
doaj   +1 more source

Fe(III) Precipitation and Copper Loss from Sulphate-Chloride Solutions at 150 °C: A Statistical Approach

open access: yesMetals, 2020
The purification of hydrometallurgical process solutions by Fe(III) precipitation is a common and large-scale industrial operation. This step is notorious for valuable metal loss occurring with the iron precipitation product, which is usually directed to
Tasawar Javed, Edouard Asselin
doaj   +1 more source

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