| 摘要 |
FIELD: electricity. ^ SUBSTANCE: present invention relates to electrical engineering and can be used in ac voltage regulators, including those operating with a lamp as the load. In the method of regulating ac voltage, before the first connection of the transformer, connection is delayed by one period of the supply voltage, in the second half of which the state of the load is analysed, and, depending on the result, magnetic flux ren is created in the transformer in the second half by applying voltage across the transformer by opening a semiconductor switch, located on the input side of the transformer, with angle of opening , which depends on the state of the load. Without a load, the angle of opening of the semiconductor switch is minimum =0, and with a nominal load =180. In that case the semiconductor switch is not opened. ^ EFFECT: improvement of quality parametres of the circuit when the output transformer of the regulator is connected to an under-loaded circuit. ^ 2 dwg |
