Abstract
In this paper, a high step-up boost converter with a non-isolated configuration is proposed. This configuration has a quadratic voltage gain, suitable for processing energy from alternative sources. It consists of two boost converters, including a transfer capacitor connected in a non-series power transfer structure between input and output. High power efficiencies are achieved with this arrangement. Additionally, the converter has a common ground and non-pulsating input current. Design conditions and power efficiency analysis are developed. Bilinear and linear models are derived for control purposes. Experimental verification with a laboratory prototype of 500 W is provided. The proposed configuration and similar quadratic configurations are compared experimentally using the same number of components to demonstrate the power efficiency improvement. The resulting power efficiency of the prototype was above 95% at nominal load.
Highlights
Energy Transfer Structure for Nowadays, the even increase in energy consumption and the worldwide concern about environmental issues have led to increase the power generation through renewable sources, like photovoltaic and fuel-cell sources [1,2]
The conventional boost converter has been proposed for renewable applications [9,10]; larger duty cycles are required to achieve high voltage gains
A step-up configuration with a quadratic conversion ratio and a non-series power transfer is proposed in this work
Summary
Energy Transfer Structure for Nowadays, the even increase in energy consumption and the worldwide concern about environmental issues have led to increase the power generation through renewable sources, like photovoltaic and fuel-cell sources [1,2]. The energy stored in both inductors is transferred in series to the output capacitor and the load The structure of this configuration allows an enlargement of the conversion ratio respect to the gain of the quadratic boost converter. Quadratic conversion ratios can achieve higher voltage gains with duty cycles less than 0.7 This configuration generates a non-pulsating input current, which is critical for renewable sources as fuel and photovoltaic cells. A boost converter with a quadratic voltage gain, common ground, and non-series power transfer for better efficiency is proposed in this work. This configuration consists of two conventional boost converters with a transfer capacitor between both converters.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
