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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

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   +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

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

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

Optimization and Experimental Validation of Amorphous Alloy High-Speed Asynchronous Motor for Simultaneous Reduction on Core and Copper Losses

open access: yesIEEE Access, 2023
Amorphous alloy has been proposed to replace silicon steel as the stator core material of high-speed asynchronous motors so as to reduce their core losses. However, it is found that this is at the expense of increasing the copper loss.
Jiahao Zhang   +6 more
doaj   +1 more source

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