タービン発電機におけるサイリスタ始動時の電磁気的特性の考察

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タイトル別名
  • Considerations on Large Turbine Generator Electromagnetic Characteristics for an SFC Start.
  • タービン ハツデンキ ニ オケル サイリスタ シドウジ ノ デンジキテキ トク

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説明

This paper describes large turbine generator electromagnetic characteristics, considering harmonic components of the armature current, for a static frequency converter (SFC) start. Namely, the magnetomotive force for an SFC start is calculated, and frequency characteristics of higher harmonic magnetic flux and currents in a field circuit and a damper circuit are considered. Then the pulsating torque is analyzed, and the effects of the damper circuit toward the pulsating torque are considered. The results are as follows.<br>(1) When the fundamental frequency is more than about one hertz, the higher harmonic magnetic flux decrease, and vibration due to the electromagnetic force is insignificant.<br>(2) The eddy currents in each damper bar differ with each slot position and each angle between the armature fundamental magnetomotive force and the field fundamental magnetomotive force.<br>(3) The torque waveforms differ for each fundamental frequency.

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