유한요소법에 의한 농형유도전동기 d-q 등가모델의 회로정수 산출

Calculation of Equivalent d-q Model Parameters of A Squirrel Cage Induction Motor Using Finite Element Method

This paper presents a method for determining of the equivalent d-q model parameters of three-phase squirrel cage induction motors. The method is based on the use of a finite-element field calculation which enables the precise slot geometry to be modelled accurately, and includes the effects of magnetic saturation of iron core. The proposed method can reduce computational costs compared with the method that needs the iterative field analysis to obtain the impedance. It is verified that the circuit inductances are shown as functions of the current.