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充電電流と充電容量の関係性のまとめ

充電電流とは

充電電流Icと充電容量Pcの計算方法

充電電流は交流電圧特有等価回路(下図参照)

ケーブル1相分等価回路

充電電流は電圧を加えるだけで負荷電流の大小に関係なく流れる。

充電電流Icの計算方法

Ic:充電電流
Xc:コンデンサリアクタンス

充電容量Pcの計算方法

進み無効電力として示されるが単位は[kvar]ではなく[kVA]となる。

充電電流Icと充電容量Pcの関係性

充電容量Pcに充電電流Icを代入することで下の式が示される。

式より充電電流Pcは電圧の2乗と静電容量に比例することがわかる。
電圧が高いほど、静電容量が大きい(距離が長い、電線太さが太い)ほど、

 容量が大きくなる。

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