Earticle

초록

영어

The negative-sequence eddy current field of the first AP1000 third-generation 1,250 MVA nuclear half-speed (4-pole) turbo-generator is deeply researched in this paper. In order to find out the influence rules of using different rotor slot wedge materials, the eddy current loss densities, which are generated by negative-sequence current, are compared and analyzed. It is well known that aluminium and aluminum-bronze are widespread materials in electric machine industry. Hence, the two materials are adopted respectively as the slot wedge material, the eddy current loss calculations of slot wedges, rotor teeth and damping bars are given, and the loss characteristic analysis results are also obtained in this work. The calculation and analysis results indicate that different materials have different effects on eddy current loss, especially for the loss density of slot wedges, eddy current loss density of the big tooth area is bigger than the small tooth, and damping bars have the biggest loss density on the rotor surface, which all should be attached importance to in actual large capacity generator design.

목차

Abstract
 1. Introduction
 2. AP1000 Generator Analysis
  2.1. Eddy Current Field Model of AP1000 Generator
  2.2. Negative-Sequence Magnetic Field Characteristics
 3. Eddy Current Losses Caused By Negative-Sequence Current
  3.1. Eddy Current Loss Calculation of Slot Wedges
  3.2. Eddy Current Loss Calculation of Rotor Teeth
  3.3. Eddy Current Loss Calculation of Damping Bars
 4. Conclusions
 Acknowledgements
 References

키워드

저자

• Bao-jun Ge [ Collage of Electrical and Electronic Engineering Harbin University of Science and Technology, Harbin, China, 150080 ]
• Wu Guo [ Collage of Electrical and Electronic Engineering Harbin University of Science and Technology, Harbin, China, 150080 ]
• Jian Guo [ Collage of Architecture and Civil Engineering Qiqihar University, Qiqihar, China, 161006 ]
• Dan-hui Zhang [ Collage of Electrical and Electronic Engineering Harbin University of Science and Technology, Harbin, China, 150080 ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Control and Automation

• 간기

  월간

• pISSN

  2005-4297

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605