サイリスタ逆相電流源を用いた三相不平衡補償方式に関する基礎研究

概要

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In this paper, the author describes a new method of balancing the fundamental currents of unbalanced three phase circuit, and also the principle and operation of the apparatus devised for this method. The apparatus consists of a thyristor negative sequence current source, the gate firing control circuit, and the device to detect the negative sequence current. The principle of this method is as follows. The negative sequence current source is connected in parrallel to the unbalanced three phase load. The amplitude of the negative sequence current generated by the current source is always adjusted equal to that of the negative sequence current of the load. And the current source produces the current 180° out of phase with that of the load. The negative sequence current of .the load is cancelled in this way, and the supply currents are balanced. The Proposed method has the following remarkable feature. As the load current never enters into composing elements of the apparatus, the capacity of the apparatus depends on the contents of the negative sequence components of the unbalanced load currents. Therefore, it can be relatively small compared with that of the load.
明治大学の論文