DEVICE FOR MEASURING THE POWER FACTOR in three-phase three-wire AC circuits

摘要

The utility model seeks to determine the three-wire three-phase power factor correction circuit in sinusoidal and non-sinusoidal modes when the zero point is unavailable. Said technical result is achieved in that the device for measuring three-phase three-wire circuit power factor AC according to formula utility model comprises first and second multipliers, the inputs of which are connected to the input buses, and the outputs are connected to inputs of the first and second low-pass filters and to inputs of the first and third adders, the outputs of the first and second low-pass filters are connected to first inputs of the first and third adders, and also to the inputs of the fourth adder, wherein in moves the first and second adders are connected to the inputs of the first and second keys, the outputs of which are connected to the inputs of the first and second integrators, whose outputs are connected to second adder input, furthermore the output of the second adder is connected to a first input of the divider to the second input of which is connected to the fourth output of the adder and the control unit inputs are connected to the two input buses and its outputs coupled to control inputs of the first and second keys.