A Simple Analytical Model of Static Eccentricity for PM Brushless Motors and Validation through FEM Analysis
The paper firstly summarizes a simple analytical model of the air gap flux-density distribution for isotropic permanent magnet (PM) synchronous machines, in the presence of static eccentricity. The model was proposed by the authors in a previous paper and is based on an efficacious analytical expres...
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| Format: | Article |
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MDPI AG
2020-07-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/13/3420 |
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| author | Andrea Del Pizzo Luigi Pio Di Noia Emanuele Fedele |
| author_facet | Andrea Del Pizzo Luigi Pio Di Noia Emanuele Fedele |
| author_sort | Andrea Del Pizzo |
| collection | DOAJ |
| description | The paper firstly summarizes a simple analytical model of the air gap flux-density distribution for isotropic permanent magnet (PM) synchronous machines, in the presence of static eccentricity. The model was proposed by the authors in a previous paper and is based on an efficacious analytical expression of the variable length of air gap magnetic field lines which occur in eccentric brushless machines with surface-mounted permanent magnets. The approximate expression of the air gap field makes it possible to achieve a mathematical model with concentrated parameters close to that of a PM machine without eccentricity. The expression of the armature voltages and electromagnetic torque are found, also with reference to steady-state operating conditions at fixed rotor speed and impressed currents. The differences introduced by the considered type of eccentricity are evaluated and highlighted especially with reference to the air gap inductance and to waveforms and frequency spectra of voltages and shaft torque. Numerical results in a case-study of an 8-pole, 110 kW PM motor are compared to those obtained by using finite element analysis. |
| first_indexed | 2024-03-10T18:43:42Z |
| format | Article |
| id | doaj.art-8d6fa499745b46b0b94375664c46b99e |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T18:43:42Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-8d6fa499745b46b0b94375664c46b99e2023-11-20T05:41:12ZengMDPI AGEnergies1996-10732020-07-011313342010.3390/en13133420A Simple Analytical Model of Static Eccentricity for PM Brushless Motors and Validation through FEM AnalysisAndrea Del Pizzo0Luigi Pio Di Noia1Emanuele Fedele2Deptartment of Electrical Engineering and Information Technology, University of Naples Federico II, 80125 Napoli, ItalyDeptartment of Electrical Engineering and Information Technology, University of Naples Federico II, 80125 Napoli, ItalyDeptartment of Electrical Engineering and Information Technology, University of Naples Federico II, 80125 Napoli, ItalyThe paper firstly summarizes a simple analytical model of the air gap flux-density distribution for isotropic permanent magnet (PM) synchronous machines, in the presence of static eccentricity. The model was proposed by the authors in a previous paper and is based on an efficacious analytical expression of the variable length of air gap magnetic field lines which occur in eccentric brushless machines with surface-mounted permanent magnets. The approximate expression of the air gap field makes it possible to achieve a mathematical model with concentrated parameters close to that of a PM machine without eccentricity. The expression of the armature voltages and electromagnetic torque are found, also with reference to steady-state operating conditions at fixed rotor speed and impressed currents. The differences introduced by the considered type of eccentricity are evaluated and highlighted especially with reference to the air gap inductance and to waveforms and frequency spectra of voltages and shaft torque. Numerical results in a case-study of an 8-pole, 110 kW PM motor are compared to those obtained by using finite element analysis.https://www.mdpi.com/1996-1073/13/13/3420static eccentricityisotropic PM brushless machinesair gap flux-density |
| spellingShingle | Andrea Del Pizzo Luigi Pio Di Noia Emanuele Fedele A Simple Analytical Model of Static Eccentricity for PM Brushless Motors and Validation through FEM Analysis Energies static eccentricity isotropic PM brushless machines air gap flux-density |
| title | A Simple Analytical Model of Static Eccentricity for PM Brushless Motors and Validation through FEM Analysis |
| title_full | A Simple Analytical Model of Static Eccentricity for PM Brushless Motors and Validation through FEM Analysis |
| title_fullStr | A Simple Analytical Model of Static Eccentricity for PM Brushless Motors and Validation through FEM Analysis |
| title_full_unstemmed | A Simple Analytical Model of Static Eccentricity for PM Brushless Motors and Validation through FEM Analysis |
| title_short | A Simple Analytical Model of Static Eccentricity for PM Brushless Motors and Validation through FEM Analysis |
| title_sort | simple analytical model of static eccentricity for pm brushless motors and validation through fem analysis |
| topic | static eccentricity isotropic PM brushless machines air gap flux-density |
| url | https://www.mdpi.com/1996-1073/13/13/3420 |
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