METHOD OF POWER CONTROL AND TRIPHASE CONVERTER DEVICE Russian patent published in 2009 - IPC G05F1/66 G05F1/70 H02M7/493 H02M7/521 

FIELD: electricity.

SUBSTANCE: invention refers to electrical engineering and may be used at tracking transformer substation of railways, city electrical transport, for DC power transmission in electric-power systems, at MND power plants, in conversion devices of wind-electric systems, solar photoelectric transducers and other DC energy sources for conversion into AC energy. Converter power is controlled by change of angle of advance of disconnection of converter power semiconductors in control zone by phasic method. Non-controlled and controlled components of converter power are summarised. Outputs of triphase bridge converters are connected to sealing offs of sections of transformer secondary sides, which primary and secondary sides are connected as per star-connected circuit, converters are assembled on double-action semi-conductor devices, triphase bridge converters at input are connected in parallel and coil are connected to buses of DC network through impedance.

EFFECT: increase of power factor, reduction of nonlinear distortions of voltage in triphase AC network and current pulsation factor at converter input due to electric pumpback by converters which semi-conductor devices are cut-off with minimum angles of advance of devices disconnection.

2 cl, 1 dwg