Results 181 to 190 of about 22,831 (243)

Demagnetization Fault Diagnosis of Permanent Magnet Synchronous Motors Using Magnetic Leakage Signals

IEEE Transactions on Industrial Informatics, 2023
In most industrial applications, it is difficult to obtain complete demagnetization fault signals of all conditions with labels for permanent magnet synchronous motor (PMSM), and motors are not allowed to be disassembled, so non-contact diagnostic ...
Fengqin Huang, Xiaofei Zhang, G. Qin, Jinping Xie, Jian Peng, Shoudao Huang, Zhuo Long, Yao Tang   +7 more
semanticscholar   +1 more source

Detection of Trailing Edge PM Demagnetization in Surface PM Synchronous Motors

IEEE transactions on industry applications, 2023
Irreversible demagnetization of permanent magnets (PM) in PM synchronous motors (PMSM) degrades the performance and efficiency of the machine and drive system.
Jigyun Jeong, Hyeonjun Lee, Marcos Orviz, Sang Bin Lee, D. Reigosa, F. Briz   +5 more
semanticscholar   +1 more source

Demagnetization Fault Diagnosis of the Permanent Magnet Motor for Electric Vehicles Based on Temperature Characteristic Quantity

IEEE Transactions on Transportation Electrification, 2023
Permanent magnet motors are widely used in the driving system of electric vehicles because of their high power density and small size. However, the permanent magnet motor is prone to demagnetization due to the complex operating environment of electric ...
Zhang Meiwei, Liao Weili, Tang Haoyue
semanticscholar   +1 more source

A Less-Invasive Method for Accurately Diagnosing Demagnetization Fault in PMSM Using Rotor Partition

IEEE Transactions on Transportation Electrification, 2023
This article presents a less-invasive method for accurately diagnosing demagnetization fault in permanent magnet synchronous motors (PMSMs) using rotor partition. The rotor permanent magnets (PMs) are partitioned according to certain rules.
Caixia Gao, Bingkun Li, Hao Chen, Yaohui Xu, Xiaozhuo Xu, J. Si, Yihua Hu   +6 more
semanticscholar   +1 more source

Demagnetization-Fault Reconstruction and Tolerant-Control for PMSM Using Improved SMO-Based Equivalent-Input-Disturbance Approach

IEEE/ASME transactions on mechatronics, 2022
A demagnetization fault not only degrades the performance of a permanent magnet synchronous motor (PMSM) drive system, but also may even cause the irreversible demagnetization.
Kaihui Zhao, Ruirui Zhou, Jinhua She, Changfan Zhang, Jing He, Gang Huang, Xiangfei Li   +6 more
semanticscholar   +1 more source

A Novel Method for Diagnosing Demagnetization Fault in PMSM Using Toroidal-Yoke-Type Search Coil

IEEE Transactions on Instrumentation and Measurement, 2022
Demagnetization fault in a permanent magnet synchronous motor (PMSM) degrades its performance and may cause serious catastrophes. Fault localization technique can improve the reliability and safety of PMSM and provide important information for developing
Hao Chen, Caixia Gao, J. Si, Yanjie Nie, Yihua Hu   +4 more
semanticscholar   +1 more source

Fault-Tolerant Design Process of Spoke-Type IPM Motor Considering Irreversible Demagnetization of PM in Integrated Electric Brake System

IEEE transactions on magnetics, 2022
In this article, a novel fault-tolerant design process of the spoke-type interior permanent magnet (IPM) motor is proposed to prevent the increase of cogging torque and torque ripple due to partial demagnetization fault and to minimize the motor size ...
K. Hwang, Keun-young Yoon
semanticscholar   +1 more source

Investigation of Post-Demagnetization Torque Ripple in Fractional-Slot Surface-Mounted PM Wind Power Generators after Short Circuit Faults

International Conference on Electrical Machines, 2022
This article investigates the post-demagnetization torque ripple of fractional-slot surface-mounted PM wind power generators. Firstly, the demagnetizing magnetomotive force from 3PSC currents is modelled and the demagnetization distribution pattern is ...
Hao Zhan, Yidong Du, Lijian Wu, Youtong Fang   +3 more
semanticscholar   +1 more source

Uniform Demagnetization Diagnosis for Permanent-Magnet Synchronous Linear Motor Using a Sliding-Mode Velocity Controller and an ALN-MRAS Flux Observer

IEEE transactions on industrial electronics (1982. Print), 2021
To realize the demagnetization fault diagnosis and degree estimation of permanent-magnet synchronous linear motors in linear motion applications with high precision and multiple working conditions, a novel double closed-loop control with an adaptive ...
Jiwen Zhao, Lijun Wang, Liang Xu, Fei Dong, Juncai Song, Xing Yang   +5 more
semanticscholar   +1 more source

Microwave demagnetization

Journal of Applied Physics, 1992
It has been possible to demagnetize an assembly of single-domain grains by direct excitation with microwaves.
D. Walton, J. Shaw, J. Share, J. Hakes
openaire   +1 more source