Design and Characteristics Analysis of Dual Air-Gap Axial-Flux type Permanent-Magnet Synchronous Generator

2중 공극형 횡자속 영구자석 동기발전기 설계 및 특성분석

  • 배성우 (영남대학교 전자정보공학부) ;
  • 황돈하 (한국전기연구원 산업전기연구단) ;
  • 강도현 (한국전기연구원 산업전기연구단) ;
  • 김용주 (한국전기연구원 산업전기연구단) ;
  • 최경호 (경북전문대학 디지털전기과) ;
  • 김동희 (영남대학교 전자정보공학부)
  • Published : 2003.07.21


This paper presents the design and characteristics analysis of axial-flux permanent-magnet (PM) synchronous generator of two air-gap. Dual axial-flux type PM synchronous generator commonly appears in applications where the generator axial dimension is more limited than the radial dimension. The strengths of dual axial-flux generator include ; (1) by employing two air-gaps, the rotor-stator attractive forces are balanced and no net axial or thrust load appeals on the generator hearings ; (2) heat produced by the stator windings appears on the outside of the generator, making it relatively easy to remove, and so on. In this paper, the simple magnetic equivalent circuit approach is used for initial design iteration, and the finite-element method is applied to analyze the detailed characteristics. The test results of driving characteristics are presented as well. The results are very similar to predicted performance of design.