Equivalent Modeling and Vector Control Verification of Solid Rotor Induction Motors

The high-speed direct drive system reduces equipment volume and increases power density, but the traditional laminated rotor core cannot withstand the centrifugal force generated by the high-speed rotation of the motor, which is prone to bending or even fracture. Solid rotor induction motors(SRIMs) using solid ferromagnetic rotors have received widespread attention due to their excellent performance in the high-speed field. Solid rotors can operate at ultra-high speeds, with a simple structure and thermal stability. However, there is no specific circuit or magnetic circuit inside the rotor, making it difficult to accurately control the solid rotor motor. Currently, most industries use frequency converters for direct drive SRIMs. This paper establishes a solid rotor mathematical model considering rotor eddy currents, and verifies the accuracy of the model through Simulink simulation and experimental results.