Abstract
High gain DC-DC converters are getting popular due to the increased use of renewable energy sources (RESs). Common ground between the input and output, low voltage stress across power switches and high voltage gain at lower duty ratios are desirable features required in any high gain DC-DC converter. DC-DC converters are widely used in DC microgrids to supply power to meet local demands. In this work, a high step-up DC-DC converter is proposed based on the voltage lift (VL) technique using a single power switch. The proposed converter has a voltage gain greater than a traditional boost converter (TBC) and Traditional quadratic boost converter (TQBC). The effect of inductor parasitic resistances on the voltage gain of the converter is discussed. The losses occurring in various components are calculated using PLECS software. To confirm the performance of the converter, a hardware prototype of 200 W is developed in the laboratory. The simulation and hardware results are presented to determine the performance of the converter in both open-loop and closed-loop conditions. In closed-loop operation, a PI controller is used to maintain a constant output voltage when the load or input voltage is changed.
Highlights
Accepted: 30 September 2021The present alarming situation of depletion of non-renewable energy sources presents an opportunity to look for alternative energy sources
To tackle the problem of environmental pollution and global warming caused by fossil fuels, sustainable energy production can be achieved by renewable [3,4] energy sources
A larger gain isswitched-capacitor obtained by a hybrid switched-capacitor low voltage stress on power semiconductor devices allows using lower-rated in [23]
Summary
The present alarming situation of depletion of non-renewable energy sources presents an opportunity to look for alternative energy sources. Several converters use isolated high-frequency transformers to obtain voltage gain by voltag by increasing thetransformer. A modified cases, non-isolated DC-DC converters are preferred to achieve high voltage gains [14–16 structure of quadratic boost converter is obtained by using a switched inductor module. A larger gain isswitched-capacitor obtained by a hybrid switched-capacitor low voltage stress on power semiconductor devices allows using lower-rated in [23]. A high-gain converter using the VL technique to achieve gain equal to twice the traditional boost converter using two inductors, but this converter has switch stress equal to the output voltage. The proposed non-isolated quadratic boost converter utilizes the dual voltage lift (VL) technique to increase the gain of the converter. A common ground connection is available between the source and load
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