制御進み角負領域内の他励式インバータ動作

概要

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The rectifier action of the series-diode-system thyristor bridge within a negative range of the angle of retardation has been described in the last issue. In succession, this time the separately-excited inverter action of this bridge within a negative range of the angle of advance will be described. In this range, the commutating voltage can be established as well as the negative range of the angle of retardation, and it is possible to act as a inverter that sends out the lagging current against the impressed A. C. voltage, and thus to make the power factor observed from A. C. source become leading. Analyzing the action of this bridge, we have obtained the expressions about the commutating voltage, input voltage, output current, output power, displacement factor, and total power factor etc. The calculated results by these expressions agree well with the experimental results. Furthermore, I will refer to the reduction method of the commutating voltage.
山梨大学の論文