G - Physics – 05 – F
Patent
G - Physics
05
F
323/21
G05F 1/45 (2006.01) H02J 3/16 (2006.01)
Patent
CA 1116235
47,479 VOLTAGE REGULATOR UTILIZING A STATIC VAR GENERATOR WITH HALF PERIOD AVERAGING AND SATURATING TYPE FIRING ANGLE CONTROL ABSTRACT OF THE DISCLOSURE A voltage regulator is taught for maintaining the terminal voltage of a three phase transmission line at a fixed reference value. The voltage regulator system utilizes the reactance of the transmission line in conjunction with reactive current from a VAR generator to compensate for the voltage effect of line current as it flows through the line reactance. me VAR generator is of the parallel capacitor- inductor type where the inductor is controlled by a thyristor switch. The conduction of the thyristor is controlled by utilizing a control system which generates an error signal based on the half period average of line voltage. The error signal is converted to a signal which is proportional to flux linkages by an integrator and then compared with the integral of the voltage signal for determining the conduc- tion angle of the thyristor switches.
305885
Brennen Michael B.
Gyugyi Laszlo
Putman Thomas H.
Mcconnell And Fox
Westinghouse Electric Corporation
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