VP10-06 Design of a High-Speed Solid-Rotor Induction Motor with Resonant Winding
Creators: LongFei XIAO
Shuangxia Niu
and Mingyuan Jiang
Publisher: name: IEEE
Year: 2025

I.Introduction Solid rotor induction machine (SRIM) is a promising solution for high-speed operations due to its unique characteristics and advantages including excellent mechanical stability, high thermal properties, as well as great rotor dynamics [1]. However, a major drawback of the SRIM is its lower torque density and the occurrence of maximum torque at relatively lower speed regions, significantly limiting its industrial applications. To address these limitations and enhance the performance of the SRIM, this paper proposes a resonant solid rotor induction motor (RSRIM) that incorporates capacitors in the stator windings. By utilizing the principle of resonance, the RSRIM demonstrates significantly improved electromagnetic performance compared to the conventional SRIM design. II. Proposed Motor Structure Fig. 1 illustrates the configuration of RSRIM, where the stator is constructed using general silicon steel sheets and the rotor is composed of materials exhibiting both magnetic permeability and electrical conductivity, such as grey cast iron and EN24T [2]. The RSRIM's performance is significantly influenced by resonant capacitors within the stator winding sets, which necessitate analysis and calculation using a T-type equivalent circuit and 2D-Finite Element Method (FEM). III.Verification To validate the proposed model, a comprehensive assessment is performed on a 6-pole 36-slot structure by conducting FEM simulations and analytical modeling. This validation process enables a detailed comparison of the operating characteristics between SRIM and RSRIM, as demonstrated in Fig. 2. Under the identical voltage supply, the maximum torque of RSRIM is enhanced, nearing the optimal efficiency point as well.References: [1] E. Kurvinen et al., "Design and Manufacturing of a Modular Low-Voltage Multimegawatt High-Speed Solid-Rotor Induction Motor," in IEEE Transactions on Industry Applications, vol. 57, no. 6, pp. 6903-6912, Nov.-Dec. 2021. [2] L. Papini and C. Gerada, "Sensitivity analysis of magnetizing inductance in solid rotor induction machine," 2016 19th International Conference on Electrical Machines and Systems (ICEMS), Chiba, Japan, 2016, pp. 1-6.
I.Introduction Solid rotor induction machine (SRIM) is a promising solution for high-speed operations due to its unique characteristics and advantages including excellent mechanical stability, high thermal properties, as well as great rotor dynamics [1]. However, a major drawback of the SRIM is its lower torque density and the occurrence of maximum torque at relatively lower speed regions, significantly limiting its industrial applications. To address these limitations and enhance the performance of the SRIM, this paper proposes a resonant solid rotor induction motor (RSRIM) that incorporates capacitors in the stator windings. By utilizing the principle of resonance, the RSRIM demonstrates significantly improved electromagnetic performance compared to the conventional SRIM design. II. Proposed Motor Structure Fig. 1 illustrates the configuration of RSRIM, where the stator is constructed using general silicon steel sheets and the rotor is composed of materials exhibiting both magnetic permeability and electrical conductivity, such as grey cast iron and EN24T [2]. The RSRIM's performance is significantly influenced by resonant capacitors within the stator winding sets, which necessitate analysis and calculation using a T-type equivalent circuit and 2D-Finite Element Method (FEM). III.Verification To validate the proposed model, a comprehensive assessment is performed on a 6-pole 36-slot structure by conducting FEM simulations and analytical modeling. This validation process enables a detailed comparison of the operating characteristics between SRIM and RSRIM, as demonstrated in Fig. 2. Under the identical voltage supply, the maximum torque of RSRIM is enhanced, nearing the optimal efficiency point as well.References: [1] E. Kurvinen et al., "Design and Manufacturing of a Modular Low-Voltage Multimegawatt High-Speed Solid-Rotor Induction Motor," in IEEE Transactions on Industry Applications, vol. 57, no. 6, pp. 6903-6912, Nov.-Dec. 2021. [2] L. Papini and C. Gerada, "Sensitivity analysis of magnetizing inductance in solid rotor induction machine," 2016 19th International Conference on Electrical Machines and Systems (ICEMS), Chiba, Japan, 2016, pp. 1-6.