Magnet temperature estimation of permanent magnet synchronous motor using search coils

Cheng, Yuan; Chen, Jinfeng; Huang, Wan; Du, Bochao; Cui, Shumei

doi:10.1109/icems56177.2022.9983044

Cited by 1 publication

(2 citation statements)

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“…Demagnetization fault detection by three toroidal search coil voltages analysis is presented in [19] for a three-phase PMSM. Six search coils are used in [20] for inter-turn fault detection in PMSM, and they perform magnets temperature estimation for the mentioned motor in [21]. In addition, a technique for demagnetization and eccentricity faults separation is addressed in [22] by the six search coils for the considered PMSM.…”

Section: Introductionmentioning

confidence: 99%

“…In [13], the obtained homopolar components of the currents by the FFT are used for different faults detection in a PMSM. As another technique, search coil in the EMs is an investigated technique for the fault detection [11,[14][15][16][17][18][19][20][21][22][23]. In [11], the FFT of the induced voltage in the pole-specific search coil is used to diagnose inter-turn and demagnetization faults in the PMSMs.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An Innovative Modeling Approach and Advanced Technique for Fault Detection and Distinction in Permanent Magnet Flux-Switching Motors

Naderi,

Mikaeeli,

Ehsan-Maleki

et al. 2024

Preprint

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This paper presents a Permanent Magnet Flux Switching Motor (PM-FSM) performance analysis in healthy and faulty cases by a mathematical modeling method. A new fault detection and separation technique is described using six search windings (SWs), each obtained by two series search coils (SCs). The goal of the paper is to consider Static, dynamic, and mixed eccentricities (SE, DE, and ME), inter-turn (IT), and PM demagnetization (PD) faults. The style of the induced voltages is employed for the described fault detection/separation, where the IT and PD faults location is possible by using six open-circuit voltage of the search windings. Since each fault has a particular waveform style in the induced voltages of the SWs, the proposed method yields a real-time fast technique. The method is independent of the motor load thanks to the voltage-based approach, where the rotor rotation is the only necessity of the proposed method. Although the method used twelve SCs in the motor structure, distinguishing the various faults and their location possibility are its advantages compared to other SC-based techniques that use fewer SCs. The well-known flexible Magnetic Equivalent Circuit (MEC) with adjustable accuracy is used to analyze healthy and faulty motors by a unique model thanks to its flexibility and shorter processing time compared to the Finite-Element Method (FEM).

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