直列ダイオード方式単相サイリスタブリッジの転流

概要

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The series-diode-system single phase thyristor bridge is able to establish a commutating voltage over the whole range of control angle through zero from positive to negative, as well as the same system three phase thyristor bridge of 120°conducting period type. Therefore, it is possible to expand the action range of the rectifier over the control angle of retardation from positive to negative, and the action range of the separately-excited inverter over the control angle of advance from positive to negative. An establishment of commutating voltage is resulted from the magnetic energy stored into the leakage inductance of a.c. side, and an additional charging of commutating capacitor by the a.c. voltage. In this paper, mechanism of establishment of commutating voltage is analysed, and the agreement of theory and experiment is introduced. The action of this bridge within the negative range of control angle is important from the viewpoint of improvement of power factor because of the leading current from the source.
山梨大学の論文