Eccentricity Effect on Radial Forces of Bearingless BLDC Motor: Study and Analysis
The bearingless BLDC motor gathers all advantages of the BLDC motor and bearingless machine, and this motor is extensively used in blood and artificial heart pumps. In a bearingless BLDC motor, there are two sets of windings, the main winding, responsible for producing the motor torque, and the susp...
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| Format: | Article |
| Language: | English |
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Unviversity of Technology- Iraq
2022-02-01
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| Series: | Engineering and Technology Journal |
| Subjects: | |
| Online Access: | https://etj.uotechnology.edu.iq/article_173015_e554ade2f897641a0fedef7fad0c385c.pdf |
| _version_ | 1827367739312832512 |
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| author | Ali Yousif Ahmed Mohammed Mohammed Moanes Ali |
| author_facet | Ali Yousif Ahmed Mohammed Mohammed Moanes Ali |
| author_sort | Ali Yousif |
| collection | DOAJ |
| description | The bearingless BLDC motor gathers all advantages of the BLDC motor and bearingless machine, and this motor is extensively used in blood and artificial heart pumps. In a bearingless BLDC motor, there are two sets of windings, the main winding, responsible for producing the motor torque, and the suspension winding, which keeps the rotor in the center without any contact with the stator. Generally, the suspension system is responsible for the generation of the suspension forces to cancel the pull-out forces (radial forces), which strongly depends on the accurate evaluation of radial forces distribution at different operating conditions. In this paper, a mathematical model based on the finite element method is used to calculate and analyze the radial force of a bearingless blood pump BLDC motor using Ansys/Maxwell. Based on Maxwell equations, the normal and tangential components of the airgap flux density is determined and used to calculate the radial force, magnitude, and direction. In addition, different cases of rotor displacement under eccentricity conditions are covered. The relation between the rotor displacement and radial force is analyzed, accounting for the displacement direction. Finally, the results are analyzed and discussed. |
| first_indexed | 2024-03-08T09:17:27Z |
| format | Article |
| id | doaj.art-b959bce27bd44dc28b4d93ca4ff95e14 |
| institution | Directory Open Access Journal |
| issn | 1681-6900 2412-0758 |
| language | English |
| last_indexed | 2024-03-08T09:17:27Z |
| publishDate | 2022-02-01 |
| publisher | Unviversity of Technology- Iraq |
| record_format | Article |
| series | Engineering and Technology Journal |
| spelling | doaj.art-b959bce27bd44dc28b4d93ca4ff95e142024-01-31T14:27:42ZengUnviversity of Technology- IraqEngineering and Technology Journal1681-69002412-07582022-02-0140235836810.30684/etj.v40i2.2218173015Eccentricity Effect on Radial Forces of Bearingless BLDC Motor: Study and AnalysisAli Yousif0Ahmed Mohammed1Mohammed Moanes AliElectrical Engineering Dept., University of Technology-Iraq, Alsina’a Street, 10066 Baghdad, Iraq.Electrical Engineering Dept., University of Technology-Iraq, Alsina’a Street, 10066 Baghdad, Iraq.The bearingless BLDC motor gathers all advantages of the BLDC motor and bearingless machine, and this motor is extensively used in blood and artificial heart pumps. In a bearingless BLDC motor, there are two sets of windings, the main winding, responsible for producing the motor torque, and the suspension winding, which keeps the rotor in the center without any contact with the stator. Generally, the suspension system is responsible for the generation of the suspension forces to cancel the pull-out forces (radial forces), which strongly depends on the accurate evaluation of radial forces distribution at different operating conditions. In this paper, a mathematical model based on the finite element method is used to calculate and analyze the radial force of a bearingless blood pump BLDC motor using Ansys/Maxwell. Based on Maxwell equations, the normal and tangential components of the airgap flux density is determined and used to calculate the radial force, magnitude, and direction. In addition, different cases of rotor displacement under eccentricity conditions are covered. The relation between the rotor displacement and radial force is analyzed, accounting for the displacement direction. Finally, the results are analyzed and discussed.https://etj.uotechnology.edu.iq/article_173015_e554ade2f897641a0fedef7fad0c385c.pdfbearinglesseccentricitybldcradial forcefinite element methodansys/maxwell |
| spellingShingle | Ali Yousif Ahmed Mohammed Mohammed Moanes Ali Eccentricity Effect on Radial Forces of Bearingless BLDC Motor: Study and Analysis Engineering and Technology Journal bearingless eccentricity bldc radial force finite element method ansys/maxwell |
| title | Eccentricity Effect on Radial Forces of Bearingless BLDC Motor: Study and Analysis |
| title_full | Eccentricity Effect on Radial Forces of Bearingless BLDC Motor: Study and Analysis |
| title_fullStr | Eccentricity Effect on Radial Forces of Bearingless BLDC Motor: Study and Analysis |
| title_full_unstemmed | Eccentricity Effect on Radial Forces of Bearingless BLDC Motor: Study and Analysis |
| title_short | Eccentricity Effect on Radial Forces of Bearingless BLDC Motor: Study and Analysis |
| title_sort | eccentricity effect on radial forces of bearingless bldc motor study and analysis |
| topic | bearingless eccentricity bldc radial force finite element method ansys/maxwell |
| url | https://etj.uotechnology.edu.iq/article_173015_e554ade2f897641a0fedef7fad0c385c.pdf |
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