Modified Common Ground Transformerless High Gain Dc-DcBuck-Boost Converter


Authors : Vishak Ravi; Smitha Paulose; Mohitha Thomas; Binoj Thomas

Volume/Issue : Volume 8 - 2023, Issue 1 - January

Google Scholar : https://bit.ly/3TmGbDi

Scribd : https://tinyurl.com/yc3wzbu8

DOI : https://doi.org/10.5281/zenodo.8347710

Enhancing the voltage ratio in a converter is a leading aim to improve its performance. Regarding this goal, a new topology of buck-boost converter is introduced. DC-DC converters are essential devices in many applications like UPS, solar energy, wind energy batteries, where their output voltage being constant. The converter offers a much higher voltage gain ratio in comparison to its relevant high gain buck-boost structures. The range of duty cycle has widened in this converter without adopting any transformers or coupled inductors in its configuration. The number of components is quite a few. There- fore, this converter is quite easy to be controlled. Furthermore, a common electrical ground is provided between the input and output ports. This has a high level of priority due to the conviction that, when a converter lacks this feature, another isolated device is required for controlling the power switches. This would considerably increase the costs of implementing such structures. As a result, their practical usage in several applications is highly limited. Hence, maintaining common electrical ground is another feature that must be considered in devising a converter. Hence, this structure is an appropriate choice to be utilized in several industrial applications. Results are obtained by simulating the system in MATLAB/SIMULINK R2020b.

Keywords : Buck-Boost Converter, Common electrical ground, Gain, Duty Cycle

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