ALTERNATING VOLTAGE REGULATION METHOD

摘要

FIELD: electricity. ^ SUBSTANCE: application: invention relates to the field of electrical engineering and is to be implemented in variable voltage regulators including those operating into lamp load. Concept of the invention is as follows: the proposed alternating voltage regulation method basically consists in variation of both the number of periods of the feeder voltage supplied to the load and the regulation period duration in case of operation into lamp load. Additionally before each connection of the transformer one undertakes load condition analysis; depending on the results thereof in the transformer there is a magnetic flux "ñüé" generated through the transformer voltage connection by way of opening the semiconductor switch on the transformer input side, the opening angle y depending on the condition of load, half a period of the mains feeder voltage prior to the transformer connection. At no load the semiconductor switch opening angle is the minimum (0); at rated load the semiconductor switch opening angle is the maximum (180) and the semiconductor switch does not become opened. ^ EFFECT: improvement of the circuit qualitative parametres at the regulator output transformer connection to an underloaded circuit. ^ 2 dwg