Hybrid Powered Converter with Relay-Less Automatic Changeover

Abstract

This paper presents a hybrid powered converter with relay-less automatic changeover. No sensor circuit is needed for the power sources to be interchanged to unlike the conventional automatic changeover. The proposed system has nothing to with relay system. The two power sources are the solar panels and the battery bank. The automatic changeover system is based on the voltage disparity between the two power sources. It is realized by combination of solar panels, bidirectional converter and load. The advantages of the proposed systems are: (i) It is light in weight; (ii) It has minimum power losses; (iii) It is very cheap and (iv) It is transformer-less system. It is applied basically in homes and medium scale industries.