Steady-State Analysis of Single-Phase Transformer Coupled Loads Controlled by a Bidirectional ac Switch

An analysis of the behavior of single-phase transformer coupled loads controlled by an ac switch is presented. The current and load voltage equations are derived taking into account the principal parameters of the transformer, and it is shown that the extinction angle is a function of the ratio of the inductances, an equivalent time constant, and the triggering angle. Through the suggested analysis more exact results are obtained than compared to the conventional analysis.