AC VOLTAGE CONTROLLER Russian patent published in 2014 - IPC H02M5/257 

FIELD: electricity.

SUBSTANCE: device comprises in each phase a chain of n-serially connected capacitors, two groups of controlled unidirectional keys of n valves and two groups of diodes of n - 1 diodes each, the device contains in each phase the chains from n - serially connected cells, comprising of a chain of serially connected damping resistor and damping capacitor, in parallel connected to an AC key, which are serially connected with a ballast capacitor and in parallel with a ballast reactor, and the load is serially connected with the last cell.

EFFECT: development of an AC voltage controller with improved properties of output voltage and input current.

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