Effects of Voltage-Waveform Distortion in TCR-Type Compensators

摘要

This paper examine the effect of system voltage distortion on the performance of a thyristor-controlled reactor (TCR) type of compensator. Toward this end, the real and imaginary values of harmonic current through the TCR, and the optimal gating angle that controls it , are calculated with a view toward minimizing the rms value of the supply current and to achieving an optimum power factor (PF). The precision of the formulas obtained, assuming an equal conduction angle of the thyristors in the two half periods, is compared with the results achieved using two different methods simulating TCR-one by means of a PASCAL program and the other with PSPICE.