DEVICE FOR RELIABILITY AND EFFICIENCY ENHANCEMENT OF RECEIVERS POWER SUPPLY

摘要

A device for reliability enhancement and electricity supply of receivers relates to electric engineering and energetic and meant for usage in low-voltage four-wiresThree-phase network 0,38-0,4 kb with solidly-earthed zero phase (neutral). In the main first embodiment, the device comprises series and parallel filters of zero sequence currents. A zero current parallel filter is performed according zigzag circuit, terminals of linear phases are connected to input terminals, lead of zero phase is connected to start lead of fourth winding of the series filter, finish terminal is connected to zero wire. Three windings of the series filter are connected between input and output terminals of linear phases. In the second main embodiment a powerful filter of zero sequence current is incorporated, terminals of which are connected to output terminals of the device. The device provides 15-30 times more multiplicity of current/voltage zero sequence suppression, reduce of vibration and audio noise, survivability increase in case of alarm conditions, power supply efficiency. The device provides normal work of energy receivers in case of one-phase short-circuits and if one of distribution network wires breaks. The device reduce losses in line of the distribution network and the supply transformer, eliminates of cross-flow currents of zero phases wires of distribution network, which allows using both one-directed and two directed electric energy recording without substantial error in cost of consumed energy. The device can be used for power supply of important consumers in medicine, communications, military engineering etc.