Nonlinear Analysis of the Rotor Bridge in a Induction Motor with Closed Slots

폐슬롯 구조의 회전자를 가지는 유도전동기 회전자 브릿지부분의 자기포화현상 해석

The starting characteristics of induction motors strongly depend on the leakage reactance and resistance of stator winding and rotor circuits. The magnetic field saturation in the rotor bridge of closed slot rotor makes it very difficult to compute the leakage reactance of rotor bars. This paper describes a comparison between timestep finite element analysis, time-harmonic analysis and experimental results for a test model which can represent the nonlinear behaviour of the rotor bridge.