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Eddy Current Loss Analysis of Slotless Double-sided Cored Type Permanent Magnet Generator by using Analytical Method

해석적 방법을 이용한 슬롯리스 양측식 코어드 타입 영구자석 발전기의 와전류 손실 해석

  • Jang, Gang-Hyeon (Dept. of Electrical Engineering, Chungnam National University) ;
  • Jung, Kyoung-Hun (Dept. of Electrical Engineering, Chungnam National University) ;
  • Hong, Keyyong (Offshore Plant Research Division, Korea Research Institute of Ships & Ocean Engineering) ;
  • Kim, Kyong-Hwan (Offshore Plant Research Division, Korea Research Institute of Ships & Ocean Engineering) ;
  • Choi, Jang-Young (Dept. of Electrical Engineering, Chungnam National University)
  • Received : 2016.05.11
  • Accepted : 2016.08.30
  • Published : 2016.10.01

Abstract

This paper deals with eddy current loss analysis of Slotless Double sided Cored type permanent magnet linear generator by using analytical method, space harmonic method. In order to calculate eddy current, this paper derives analytical solution by the Maxwell equation, magnetic vector potential, Faraday's law and a two-dimensional(2-D) cartesian coordinate system. First, we derived the armature reaction field distribution produced by armature wingding current. Second, by using derived armature reaction field solution, the analytical solution for eddy current density distribution are also obtained. Finally, the analytical solution for eddy current loss induced in permanent magnets(PMs) are derived by using equivalent, electrical resistance calculated from PMs volume and eddy current density distribution solution. The analytical result from space harmonic method are validated extensively by comparing with finite element method(FEM).

Acknowledgement

Grant : 방파제 연계형 파력발전 융복합 기술개발

Supported by : 해양수산부

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