Parameter Calculation and Rotor Structure Optimization Design of Solid Rotor Induction Motors
Solid rotor induction motors have a solid body rotor, which leads to low efficiency and power factor, and currently, the rotor is mostly optimized by slotted and squirrel cage structures. A generalized multilayer analytical model for different rotor structures is established, which can consider the...
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MDPI AG
2025-05-01
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| author | Hao Xu Jinghong Zhao Sinian Yan |
| author_facet | Hao Xu Jinghong Zhao Sinian Yan |
| author_sort | Hao Xu |
| collection | DOAJ |
| description | Solid rotor induction motors have a solid body rotor, which leads to low efficiency and power factor, and currently, the rotor is mostly optimized by slotted and squirrel cage structures. A generalized multilayer analytical model for different rotor structures is established, which can consider the effects of rotor eddy currents and saturation, based on which a generalized equivalent circuit model is established. The effects of number of slots, depth of slots, width of slots, squirrel cage material and end ring thickness on rotor impedance, torque and rotor losses are analyzed. On this basis, with efficiency, power factor, starting torque and starting current as the optimization objectives, and the number of slots, slot depth, slot width, squirrel cage material and end ring thickness as the optimization variables, the optimization schemes of slotted rotor and squirrel cage rotor are obtained by using the three-dimensional finite element method. The theoretical analysis is verified by finite element simulation and prototype experiment, and the results show that the electromagnetic parameters of solid rotor induction motors with different rotor structures can be accurately calculated using the universal magnetic field analytical model and the universal equivalent circuit model with an error within 5.8%. Slotted and squirrel cage rotors can effectively improve the motor power factor and efficiency, but this will lead to a decrease in starting performance. For the optimization function established in this paper, compared with the smooth rotor, the performance of the squirrel cage rotor is improved by 6.08%, which verifies the accuracy and validity of this paper and the optimization design scheme. |
| format | Article |
| id | doaj-art-a68c7cd897cf4b448aa2ce5f3b2e0d97 |
| institution | OA Journals |
| issn | 1424-8220 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-a68c7cd897cf4b448aa2ce5f3b2e0d972025-08-20T01:50:46ZengMDPI AGSensors1424-82202025-05-01259292910.3390/s25092929Parameter Calculation and Rotor Structure Optimization Design of Solid Rotor Induction MotorsHao Xu0Jinghong Zhao1Sinian Yan2School of Electrical Engineering, Naval University of Engineering, Wuhan 430033, ChinaSchool of Electrical Engineering, Naval University of Engineering, Wuhan 430033, ChinaSchool of Electrical Engineering, Naval University of Engineering, Wuhan 430033, ChinaSolid rotor induction motors have a solid body rotor, which leads to low efficiency and power factor, and currently, the rotor is mostly optimized by slotted and squirrel cage structures. A generalized multilayer analytical model for different rotor structures is established, which can consider the effects of rotor eddy currents and saturation, based on which a generalized equivalent circuit model is established. The effects of number of slots, depth of slots, width of slots, squirrel cage material and end ring thickness on rotor impedance, torque and rotor losses are analyzed. On this basis, with efficiency, power factor, starting torque and starting current as the optimization objectives, and the number of slots, slot depth, slot width, squirrel cage material and end ring thickness as the optimization variables, the optimization schemes of slotted rotor and squirrel cage rotor are obtained by using the three-dimensional finite element method. The theoretical analysis is verified by finite element simulation and prototype experiment, and the results show that the electromagnetic parameters of solid rotor induction motors with different rotor structures can be accurately calculated using the universal magnetic field analytical model and the universal equivalent circuit model with an error within 5.8%. Slotted and squirrel cage rotors can effectively improve the motor power factor and efficiency, but this will lead to a decrease in starting performance. For the optimization function established in this paper, compared with the smooth rotor, the performance of the squirrel cage rotor is improved by 6.08%, which verifies the accuracy and validity of this paper and the optimization design scheme.https://www.mdpi.com/1424-8220/25/9/2929solid rotor induction motorsgeneralized analytical model of magnetic fieldsstructural optimizationfinite element simulationprototype experiment |
| spellingShingle | Hao Xu Jinghong Zhao Sinian Yan Parameter Calculation and Rotor Structure Optimization Design of Solid Rotor Induction Motors Sensors solid rotor induction motors generalized analytical model of magnetic fields structural optimization finite element simulation prototype experiment |
| title | Parameter Calculation and Rotor Structure Optimization Design of Solid Rotor Induction Motors |
| title_full | Parameter Calculation and Rotor Structure Optimization Design of Solid Rotor Induction Motors |
| title_fullStr | Parameter Calculation and Rotor Structure Optimization Design of Solid Rotor Induction Motors |
| title_full_unstemmed | Parameter Calculation and Rotor Structure Optimization Design of Solid Rotor Induction Motors |
| title_short | Parameter Calculation and Rotor Structure Optimization Design of Solid Rotor Induction Motors |
| title_sort | parameter calculation and rotor structure optimization design of solid rotor induction motors |
| topic | solid rotor induction motors generalized analytical model of magnetic fields structural optimization finite element simulation prototype experiment |
| url | https://www.mdpi.com/1424-8220/25/9/2929 |
| work_keys_str_mv | AT haoxu parametercalculationandrotorstructureoptimizationdesignofsolidrotorinductionmotors AT jinghongzhao parametercalculationandrotorstructureoptimizationdesignofsolidrotorinductionmotors AT sinianyan parametercalculationandrotorstructureoptimizationdesignofsolidrotorinductionmotors |