COMPENSATION DEVICE FOR CURRENT DISTORTIONS AND REACTIVE POWER Russian patent published in 2010 - IPC H02J3/18 

FIELD: electricity.

SUBSTANCE: device includes power unit and monitoring and control system, where power unit includes DC-to-AC transformer based on IGBT inverter with power accumulator in the form of condenser connected at DC side of the transformer, and integration filter linked to AC output terminals and connected to network over protection and cushion start unit, and monitoring and control system containing first and second current sensors and pulse-width modulation unit, with first current sensor connected at load input and second current sensor connected between transformer output and integration filter input, is supplemented with voltage sensor connected over respective analog-to-digital converter to respective inputs of digital processing unit, output of which is connected to pulse-width modulation unit input over digital-to-analog converter unit, with pulse-width modulation unit output connected to transformer input. Digital processing unit includes interconnected digital down-converters, amplitude and phase detectors, synthesisers and adders, with inputs of respective digital down-converters and respective adder serving as digital processing unit input and output of another respective adder as digital processing unit output.

EFFECT: enhanced accuracy, extended functional capacities.

3 cl, 1 dwg