CONTROL METHOD OF OUTPUT VOLTAGE OF AC SINUSOIDAL VOLTAGE CONTROLLER Russian patent published in 2020 - IPC G05F1/24 H02M5/12 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and power engineering, particularly to variable sinusoidal voltage regulators. Technical result is achieved by the fact that in the method of controlling the output voltage of the variable sinusoidal voltage controller, setting the thyristor switch final state, introducing restrictions on step-by-step switching of thyristor switch from current state to a given final state, selecting an allowable sequence of thyristor switching step-by-step switching, which satisfies given limitations, at least by value of output voltage of controller of variable sinusoidal voltage during stepwise switching, and before beginning switching of thyristor switch by bidirectional thyristor switch disconnect transformer series winding from power supply and load by removing control pulses, maintaining time interval for switching thyristor switch to new state, switching thyristor switch to new state, and then connected by supplying control pulses to bidirectional thyristor switch serial transformer winding in series with power supply and load, is characterized by that required level of output voltage of sinusoidal alternating voltage controller, instantaneous values of current and voltage of power supply source are measured and synchronously with disconnection and switching on of bidirectional thyristor key control actions are generated on additional bidirectional thyristor key, connecting the power supply directly to the load, during time intervals when the bidirectional thyristor switch is in the off state.

EFFECT: technical result is improvement of quality of electric energy on load of variable sinusoidal voltage controller.

1 cl, 2 dwg