Modal-frequency spectrum of magnetic flux density in air gap of permanent magnet motor

Witczak, Pawel; Kubiak, Witold; Lefik, M.; Szulakowski, Jacek

doi:10.2478/aee-2014-0003

Cited by 2 publications

(2 citation statements)

References 14 publications

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“…According to the electrical machine theory, during the motor operation, the air gap magnetomotive force includes the stator current harmonic magnetomotive force and the equivalent magnetomotive force of the rotor permanent magnets [18]. The space harmonic magnetic field is produced by permanent magnets, and it rotates synchronously with the rotor.…”

Section: Air Gap Magnetic Field Decoupling Methodsmentioning

confidence: 99%

Research on the influence of driving harmonic on electromagnetic field and temperature field of permanent magnet synchronous motor

Qiu

et al. 2017

Archives of Electrical Engineering

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At present, the drivers with different control methods are used in most of permanent magnet synchronous motors (PMSM). A current outputted by a driver contains a large number of harmonics that will cause the PMSM torque ripple, winding heating and rotor temperature rise too large and so on. In this paper, in order to determine the influence of the current harmonics on the motor performance, different harmonic currents were injected into the motor armature. Firstly, in order to study the influence of the current harmonic on the motor magnetic field, a novel decoupling method of the motor magnetic field was proposed. On this basis, the difference of harmonic content in an air gap magnetic field was studied, and the influence of a harmonic current on the air gap flux density was obtained. Secondly, by comparing the fluctuation of the motor torque in the fundamental and different harmonic currents, the influence of harmonic on a motor torque ripple was determined. Then, the influence of different current harmonics on the eddy current loss of the motor was compared and analyzed, and the influence of the drive harmonic on the eddy current loss was obtained. Finally, by using a finite element method (FEM), the motor temperature distribution with different harmonics was obtained.

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Section: Air Gap Magnetic Field Decoupling Methodsmentioning

confidence: 99%

Research on the influence of driving harmonic on electromagnetic field and temperature field of permanent magnet synchronous motor

Qiu

et al. 2017

Archives of Electrical Engineering

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“…The air gap flux density of the SPM motor and IPM motor is extracted respectively. The harmonic content of the air gap magnetic flux density is obtained by the Fourier decomposition theory [12]. The air gap magnetic dense waveforms and the Fourier decomposition results of the air gap magnetic density under a pair of poles are shown in Fig.…”

Section: The Air Gap Flux Densitymentioning

confidence: 99%

Influence of different rotor magnetic circuit structure on the performance of permanent magnet synchronous motor

Qiu

Cui

et al. 2017

Archives of Electrical Engineering

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Abstract:In order to compare the performance difference of the permanent magnet synchronous motors (PMSM) with different rotor structure, two kinds of rotor magnetic circuit structure with surface-mounted radial excitation and tangential excitation are designed respectively. By comparing and analyzing the results, the difference of the motor performance was determined. Firstly, based on the finite element method (FEM), the motor electromagnetic field performance was studied, and the magnetic field distribution of the different magnetic circuit structure was obtained. The influence mechanism of the different magnetic circuit structure on the air gap flux density was obtained by using the Fourier theory. Secondly, the cogging torque, output torque and overload capacity of the PMSM with different rotor structure were studied. The effect mechanism of the different rotor structure on the motor output property difference was obtained. The motor prototype with two kinds of rotor structure was manufactured, and the experimental study was carried out. By comparing the experimental data and simulation data, the correctness of the research is verified. This paper lays a foundation for the research on the performance of the PMSM with different magnetic circuit structure.

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Modal-frequency spectrum of magnetic flux density in air gap of permanent magnet motor

Cited by 2 publications

References 14 publications

Research on the influence of driving harmonic on electromagnetic field and temperature field of permanent magnet synchronous motor

Research on the influence of driving harmonic on electromagnetic field and temperature field of permanent magnet synchronous motor

Influence of different rotor magnetic circuit structure on the performance of permanent magnet synchronous motor

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