The Study on Current Characteristic according to Core Cutting Degree in Three-Phase Induction Motor with Rectangular Stator Core

사각 고정자 철심을 가지는 삼상 유도전동기의 고정자 철심 절단 각에 따른 전류 특성 연구

  • 임종빈 (한양대학교 전기공학과) ;
  • 김승주 (한양대학교 전기공학과) ;
  • 김광수 (한양대학교 전기공학과) ;
  • 이형우 (한국철도기술연구원 초고속열차연구실) ;
  • 김솔 (유한대학 전기정보과) ;
  • 이주 (한양대학교 전기공학과)
  • Published : 2009.05.21

Abstract

Induction motors widely use in industry because structure is simple and hard and cost is generally cheap and they are easy to control. In recently, because of saving steel, ventilation and benefit of frame fixing, rectangular core type induction motors use in industry more and more. This paper presents current characteristic according to stator core cutting degree in three-phase induction motor (IM) with rectangular stator core. According to stator cutting degree, magnetic saturation and paths of flux are changed. Because of these situations, phase currents are unbalance and are produced harmonic components and they cause decrease of efficiency. We analyze each $10^{\circ}$ from $0^{\circ}$ to $30^{\circ}$ using 2-D finite element analysis (FEA). Optimal stator cutting core degree selection supplies stable currents and efficiency improvement. In this paper, loss separation test was executed by IEEE Std. 112-98 Method B and we compare with the result of loss separation by Simulation using FEM and by Experiment.

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