Performance Study of Dual-Rotor Induction Motor Applied in Transient High-Power Electrical Driving System

This paper proposes a novel transient high-power electrical drive system (THPEDS) based on a dual-rotor induction motor (DRIM) to address the limitations of conventional flywheel energy storage systems, which require separate components for energy storage and conversion, leading to large system size and mass. The DRIM integrates energy storage and mechanical drive functions into a single device, utilizing an outer rotor for inertial energy storage and an inner rotor for direct load driving, thereby eliminating additional electromechanical conversion stages. Steady-state performance, analyzed via 2D finite element method (FEM), reveals magnetic field distribution and torque characteristics under varying excitation currents and slip speeds. A dynamic torque control strategy, derived from fitted torque curves, is implemented and validated through field-circuit co-simulation, demonstrating effective torque regulation and stable operation. The proposed system offers a compact, efficient solution for applications such as UAV-assisted takeoff, enhancing power density and simplifying system structure.