FIELD: electrical engineering.
SUBSTANCE: disclosed is an active filter of higher harmonics of a three-phase network, which consists of a rectifier, a three-phase bridge voltage inverter on six fully controlled semiconductor key elements, each of which is equipped with an anti-parallel diode, and a capacitor connected to the corresponding outputs of the rectifier. Filter includes three voltage sensors, a microcontroller and six optocouplers with a closed optical channel.
EFFECT: creation of a system for controlling semiconductor key elements, which provides compensation for the harmful effect of higher harmonics generated by a power supply.
2 cl, 2 dwg
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