Efficiency improvement of solar-wind based dual-input converter for telecom power supply

Uninterrupted power supply for the telecom base transceiver stations (BTS) is required to ensure reliable communication services. The challenge becomes severe if the BTS is located in remote areas where access to continuous power supply from grid is not available. To address this need, this paper presents a hybrid solar-wind energy telecom power supply with battery storage. An improved dual-input Cuk-buck converter (IMDICB) topology is proposed and it´s efficiency is compared with Dual-input Cuk-buck converter (DICB) topology. A detailed component wise comparison between these topologies is presented to establish reduction in size of energy storage elements and device ratings. These topologies can extract maximum power from two renewable sources, simultaneously or individually. In order to evaluate the performance of these topologies, simulation studies are carried out and the results are presented. The efficiencies achieved by the DICB and IMDICB are 93.39% and 96.72% respectively, thus indicating an improvement in efficiency.