The IUP Journal of Electrical and Electronics Engineering
Design and Implementation of Auto-Phase Selector from Three-Phase Supply
Article Details
| Pub. Date | : April, 2021 |
|---|---|
| Product Name | : The IUP Journal of Electrical and Electronics Engineering |
| Product Type | : Article |
| Product Code | : IJEEE20421 |
| Author Name | : Veena Bhat |
| Availability | : YES |
| Subject/Domain | : Engineering |
| Download Format | : PDF Format |
| No. of Pages | : 11 |
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Abstract
The power interruption in distribution system is about 70% for single-phase faults, while other two phases are in normal condition. In any commercial power supply system, if three phases are available, then automatic phase selection can be done in critical loads in the event of power failure in any phase. There is no need for backup power supply, and the phase is changed automatically within a few seconds. The aim of this paper is to develop an automatic phase changing switch for 220 V-240 V alternating current. The designs available are single-phase change over switches, two-phase automatic transfer switch and three-phase automatic change over switch which are manually operated. But the paper presents automatic-phase selection using electronic circuit, which is designed only for three-phase AC input power to single-phase AC output applications.
Description
The paper focuses on the idea of uninterrupted power supply to the single-phase load. In the three phases, any one-phase might have a fault, and then the supply will be automatically shifted to the next phase from the available three-phase supply. It is frequently perceived that power interruption in sharing system is about 70% for single-phase faults, while other two phases are in normal condition. Thus in any commercial or domestic power supply system where three phases are available, it is advisable to have an automatic changeover system for uninterrupted power to critical loads in the event of missing phase.
Fault
In an electric power system, fault or fault current is any abnormal electric current. Considering the example, a short circuit is a fault, in which current bypasses the normal load. An open circuit fault occurs if a circuit is interrupted by some failure. In three-phase system, a fault may involve one or more phases and ground, or may occur only between phases.
Keywords
Automatic, Phase selector, Power failure, Critical load
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