AC VOLTAGE REGULATOR Russian patent published in 2002 - IPC

FIELD: rated output voltage regulation. SUBSTANCE: regulator has booster transformer with main output winding as well as first and second additional windings that may be connected cumulatively or differentially with main winding; novelty is that total number of additional windings N may be cumulatively or differentially connection to main output winding with aid of controlled switching members whose number is (N + 1); regulator output is coupled with input of first switching member whose first output is connected to starting lead of additional winding and to first output of second switching member; second output of first switching member is connected to second output of second switching member and to input of (N + 1) switching member whose first output is connected to finishing lead and second one, to starting lead of N additional winding; first outputs of third through N switching members are connected to finishing leads of second through (N - 1) additional windings and second outputs of these switching members are connected to starting leads of second through (N - 1) additional windings; inputs of each N switching member starting from third one are connected to second input of (N + 1) switching member; regulator input is coupled through unit measuring mean rectified value of supply voltage with first input of adder whose second input is supplied with reference voltage corresponding to regulator rated output voltage; adder output is coupled through module separation unit with interconnected first inputs of first through N null devices; in addition adder output is connected through (N + 1) null device directly to control input of first switch and through inverter, to control input of second switch; first through N reference voltage sources are connected respectively to second inputs of first through N null indicators, reverence voltage value being dependent of chosen voltages across first through N additional windings; output of first null device is connected through first switch to control input of first switching member. EFFECT: enhanced reliability under various operating conditions and improved performance characteristics of regulator. 1 dwg