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| Design and Construction of an Improved Intelligent Phase Selection System
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Kawuki Disan, Oyet kennedy, Kibirirge David, Tendo Kayenga Joshua, Kitone issac
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Abstract:
This paper presents a design and construction of an intelligent phase selection system that is capable of comparing three phases and switching the load automatically to a more stable phase out of the three phases and being maintenance friendly in terms of system failure. This work is mainly focusing on providing an improvement on the existing phase selector switches mainly focusing on creating a system which is maintenance friendly and eliminates drop of load during phase change. The system consists of three main parts namely; the transformer, comparators and electrical switching device. The transformer used here is a 240Vac to 12Vac step-down type, the three single phase transformers are used to separately step down the three-individual phase i.e. Red phase, Yellow Phase and the Blue Phase as shown in the block diagram, the out of these transformers is then rectified and smoothened. It is then fed into a voltage regulator which gives a positive output. The regulator outputs are connected to comparators; they are connected in a way that each of them will give out an output through the relays. A more stable phase is then selected by the transistor and loaded with no break in power unless it is lost across all phases.
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