REACTIVE POWER CONTROL SYSTEMS, DEVICES AND METHODS Russian patent published in 2014 - IPC H02M1/42 H02J3/16 H02J3/18 H02J3/22 H02J3/36 H02J5/00 

FIELD: electricity.

SUBSTANCE: invention is related to the field of electric engineering and may be used for reactive power control in power supply systems for such devices as digging machines of different type, which are used for mining operations. The approximate defined embodiments can provide an adapted system, a device, manufacture, a scheme and/or a user interface and/or a method and/or a machine-readable medium containing instructions for activities that can contain by means of the preset data device for the preset digging machine consisting of a variety of active input cascades, at that each active input cascade is coupled electrically to the AC power mains of the above digging machine, each active input cascade is adapted to supply DC power to the DC bus, the above DC bus is coupled electrically to a variety of inverters and each inverter is adapted to supply AC power to at least one operating motor, an active power control is formed by each active input cascade in an independent way.

EFFECT: reduction of weight and dimensions, increase of power factor and electric energy quality.

15 cl, 14 dwg