電動機のモデルベース診断手法の開発

抄録

Since electric motors (including generators) are used and play crucial roles in various industries, it is important to diagnose their conditions appropriately to avoid troubles in advance. A motor is a device that converts the electric energy into the rotational (mechanical) energy. Electric motors consist of multisystem and operate through the interaction between the magnetic field and electric current in windings to generate the torque applied on the motor shaft. So, it is effective to comprehensively diagnose the motor conditions by monitoring multi-measurement data such as vibration, electronic current and temperature etc. In the previous work, we formulated the model of a condenser motor with magnetic circuit network method in order to evaluate dynamic behavior including a motor shaft, and showed its effect to electric current. In response to this result, we focus on a three-phase induction motor which is widely used in industry, and verify the model by comparing with FEM results about its electromagnetic characteristics.