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Research on the Brushless Excitation System with Linear Current Amplifier Characteristics

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  • Wei Fan
  • Yiqun Fang
  • Yuanyuan Yang
  • Xiangsheng Liu
  • Xiutao Ji
  • Libor PekaÅ™

Abstract

In terms of improving the dynamic response characteristics of brushless AC synchronous generators, the concept of integrated design of AC exciter and rotating rectifier and their electromagnetic characteristics are studied, and the conditions and judgment methods for determining their operating modes are obtained in theoretical design and simulation design, pointing out that when the brushless excitation system operates in or is close to mode III, i.e., the rectifier always has three or four diodes in each operating cycle. The linear current amplifier characteristics can be basically achieved when the brushless excitation system is operated in mode III or is close to mode III, i.e., the rectifier always has three or four diodes alternating in each operating cycle. The impact of the key parameters of the AC exciter at different rotational speeds and temperatures on the characteristics of the linear current amplifier was explored, and an engineering prototype was manufactured. The related test verified the correctness of the concept of integrated electromagnetic design and simulation calculation. This study provides an engineered design method for enhancing the dynamic response properties of the brushless AC synchronous generators.

Suggested Citation

  • Wei Fan & Yiqun Fang & Yuanyuan Yang & Xiangsheng Liu & Xiutao Ji & Libor PekaÅ™, 2022. "Research on the Brushless Excitation System with Linear Current Amplifier Characteristics," Mathematical Problems in Engineering, Hindawi, vol. 2022, pages 1-11, August.
    • Handle: RePEc:hin:jnlmpe:9271302
    DOI: 10.1155/2022/9271302
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