Double Deck Buck-Boost Converter for Power Electronic Applications

in this work, a Double-deck buck-boost converter system is used. Here, two identical buck boost converters are working in parallel. So that, the ripples in the output voltage & input current is reduced than that of single buck-boost converter with same specifications. This Double-Deck Buck-Boost Converter system is the most suitable for power quality improvement & regulated power supplies in home appliances. It also has to overcome the problems like high EMI and high switching Losses caused by hard switching. Many variations of the basic buck-boost topology have been studied to overcome these problems. The Zero Voltage switching is one such solution. Here, an extra inductor is placed between these two converters. Inductor will maintain the voltage applied to the switches at zero voltage switching & plays important role in soft switching operation. This will improve the reliability of this system. Thus reducing the switching losses & efficiency can be improved. The circuit operation is provided in eight modes. The outstanding feature of each converter is the simplicity of its circuit, reduces the number of switches. There are many applications, such as battery-powered systems & battery operated vehicles& renewable applications. The proposed converter is more economical than the soft switched converters with coupled inductors or transformers.