Optimization design of motor driven by high-inertia load

The squirrel cage motor has many advantages, but its obvious weakness is the small starting torque. When used to drive large inertia loads, the phenomenon of "big horses pulling small cars" often occurs. This article optimizes and improves the rotor groove shape of a regular three-phase induction motor, thereby increasing the starting torque of the motor. At the same time, in response to the problem of increased heat generation and decreased efficiency caused by the improved high slip, permanent magnet plates were added to the motor rotor to improve the power factor and efficiency of the motor by utilizing magnetic pulling force, reducing the thermal load. The simulation results show that the improved motor has achieved a significant increase in starting torque while ensuring efficiency.