THREE-PHASE COMPENSATOR OF REACTIVE POWER Russian patent published in 2011 - IPC H02J3/18 

FIELD: electricity.

SUBSTANCE: three-phase compensator of reactive power is connected to a three-phase load and comprises a power inverter unit, comprising a three-phase transformer, a unit of autonomous voltage inverters and a source of reactive power. The control system includes a unit of active and reactive power calculation, a unit to calculate specified values of phased currents, a unit to control autonomous voltage inverters and a unit to calculate a variable component of active and reactive power, a device to recharge a source of reactive power, a device to calculate the specified voltage, an element of comparison, a PI controller, a unit of the recharging device control and a voltage sensor. The first outlet of the unit of active and reactive power calculation is connected to the inlet of the device of the specified voltage calculation, the outlet of which is connected to the first inlet of the comparison element, the outlet of which via serially connected PI controller and unit of the recharging device control is connected to the second inlet of the latter. The second inlet of the comparison element is connected to the outlet of the voltage sensor, the first and second inlets of which are connected to the source of the reactive power.

EFFECT: increased power ratio at any mode of operation, including the rated one, with the simultaneous increase of the voltage level at the three-phase load due to adjustment of the reactive power source energy.

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