Sensorless control of switched reluctance motor based on inductance characteristic point under magnetic saturation
Abstract This paper presents a method of rotor position estimation for switched reluctance motors suitable for saturation. The effects of saturation as well as voltage changes are taken into account at the same time. It is based on the inductance in the unsaturated region. When the phase inductance...
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Nature Portfolio
2025-01-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-024-82482-9 |
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| author | Hui Cai Yuhua Fan |
| author_facet | Hui Cai Yuhua Fan |
| author_sort | Hui Cai |
| collection | DOAJ |
| description | Abstract This paper presents a method of rotor position estimation for switched reluctance motors suitable for saturation. The effects of saturation as well as voltage changes are taken into account at the same time. It is based on the inductance in the unsaturated region. When the phase inductance is equal to the threshold, it is defined as a characteristic point. Meanwhile the characteristic pulse signal is triggered. Different inductance intersection thresholds are determined when the phase current and bus voltage change. The rotor position is estimated by interval speed. Compared with the traditional inductance method, the position estimation error is smaller. Finally, the correctness and effectiveness of the proposed method are verified by simulation and experiments. |
| format | Article |
| id | doaj-art-ed250981c6c44e0a8d89e95e3d18e41a |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-ed250981c6c44e0a8d89e95e3d18e41a2025-01-05T12:16:27ZengNature PortfolioScientific Reports2045-23222025-01-0115111610.1038/s41598-024-82482-9Sensorless control of switched reluctance motor based on inductance characteristic point under magnetic saturationHui Cai0Yuhua Fan1School of Electrical & Information Engineering, Changsha University of Science & TechnologySchool of Electrical & Information Engineering, Changsha University of Science & TechnologyAbstract This paper presents a method of rotor position estimation for switched reluctance motors suitable for saturation. The effects of saturation as well as voltage changes are taken into account at the same time. It is based on the inductance in the unsaturated region. When the phase inductance is equal to the threshold, it is defined as a characteristic point. Meanwhile the characteristic pulse signal is triggered. Different inductance intersection thresholds are determined when the phase current and bus voltage change. The rotor position is estimated by interval speed. Compared with the traditional inductance method, the position estimation error is smaller. Finally, the correctness and effectiveness of the proposed method are verified by simulation and experiments.https://doi.org/10.1038/s41598-024-82482-9Switched reluctance motorPosition estimationSaturateVoltageInductanceCharacteristic point |
| spellingShingle | Hui Cai Yuhua Fan Sensorless control of switched reluctance motor based on inductance characteristic point under magnetic saturation Scientific Reports Switched reluctance motor Position estimation Saturate Voltage Inductance Characteristic point |
| title | Sensorless control of switched reluctance motor based on inductance characteristic point under magnetic saturation |
| title_full | Sensorless control of switched reluctance motor based on inductance characteristic point under magnetic saturation |
| title_fullStr | Sensorless control of switched reluctance motor based on inductance characteristic point under magnetic saturation |
| title_full_unstemmed | Sensorless control of switched reluctance motor based on inductance characteristic point under magnetic saturation |
| title_short | Sensorless control of switched reluctance motor based on inductance characteristic point under magnetic saturation |
| title_sort | sensorless control of switched reluctance motor based on inductance characteristic point under magnetic saturation |
| topic | Switched reluctance motor Position estimation Saturate Voltage Inductance Characteristic point |
| url | https://doi.org/10.1038/s41598-024-82482-9 |
| work_keys_str_mv | AT huicai sensorlesscontrolofswitchedreluctancemotorbasedoninductancecharacteristicpointundermagneticsaturation AT yuhuafan sensorlesscontrolofswitchedreluctancemotorbasedoninductancecharacteristicpointundermagneticsaturation |