FIELD: electrical engineering; active power filters. SUBSTANCE: device that can be used in power supply systems of electrical and power circuits handling current and voltage distorting loads to ensure joint operation of abruptly varying heavy power loads with power consumers sensing voltage distortions and also to raise efficiency of power transmission and consumption has controllable current supply, voltage sensor connected to current-carrying buses of ac distribution mains, and current sensor. EFFECT: improved waveform of supply voltage curve. 1 cl, 2 dwg
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