A novel active auxiliary circuit for efficiency enhancement integrated with synchronous buck converter

2016 ◽  
Vol 44 (12) ◽  
pp. 2043-2057
Author(s):  
Anup Kumar Panda ◽  
Shiva Sarode ◽  
Ramesh Tejavathu
Keyword(s):  
Buck Converter ◽  
Efficiency Enhancement ◽  
Auxiliary Circuit

scholarly journals A Novel Soft-Switching Synchronous Buck Converter for Portable Applications

2008 ◽  
Vol 2008 ◽  
pp. 1-9
Author(s):  
Anup Kumar Panda ◽  
Swapnajit Pattnaik ◽  
K. K. Mohapatra
Keyword(s):  
Pulse Width ◽  
High Efficiency ◽  
Low Voltage ◽  
Buck Converter ◽  
Soft Switching ◽  
Pulse Width Modulated ◽  
Zero Voltage Switching ◽  
Overall Efficiency ◽  
Zero Voltage ◽  
Auxiliary Circuit

This paper proposes a zero-voltage-transition (ZVT) pulse-width-modulated (PWM) synchronous buck converter, which is designed to operate at low voltage and high efficiency typically required for portable systems. A new passive auxiliary circuit that allows the main switch to operate with zero-voltage switching has been incorporated in the conventional PWM synchronous buck converter. The operation principles and a detailed steady-state analysis of the ZVT-PWM synchronous converter implemented with the auxiliary circuit are presented. Besides, the main switch and all of the semiconductor devices operate under soft-switching conditions. Thus, the auxiliary circuit provides a larger overall efficiency. The feasibility of the auxiliary circuit is confirmed by simulation and experimental results.

scholarly journals A Duty Cycle Controlled ZVS Buck Converter With Voltage Doubler Type Auxiliary Circuit

2021 ◽  
Vol 9 ◽  
Author(s):  
Sana Basharat ◽  
Saeed Ehsan Awan ◽  
Rizwan Akhtar ◽  
Alamdar Hussain ◽  
Shahid Iqbal ◽  
...  
Keyword(s):  
Heat Dissipation ◽  
Research Work ◽  
Input Voltage ◽  
Buck Converter ◽  
Zero Voltage Switching ◽  
Switching Losses ◽  
Compact Size ◽  
Zero Voltage ◽  
Voltage Switching ◽  
Auxiliary Circuit

DC–DC converters have wide applications in industries, motor drive circuits, electric vehicles, and power supplies. In traditional converters hard switching occurs due to switching losses. This imposes constraints on the converter’s efficiency which results in heat dissipation and reduction in the converter’s life. The proposed converter aims to encounter the hard switching problem with the provision of soft switching features. The presented topology is efficient with respect to the features of cost, compact size and durable lifetime of converter topology with the provision of low switching stresses. This research work proposes a novel stepdown converter with zero voltage switching characteristics. With the use of half bridge inverter switches and series resonant components in the auxiliary circuit, the target of zero voltage switching and reduction in switching stresses has been achieved. The proposed 500 W converter is designed to operate at frequency of 100 KHz with 300 V source input voltage. Output voltage of the converter is 150 V.

Efficiency Improvement of Synchronous Buck Converter by Passive Auxiliary Circuit

2010 ◽  
Vol 46 (6) ◽  
pp. 2511-2517 ◽  
Author(s):  
Swapnajit Pattnaik ◽  
Anup Kumar Panda ◽  
Kamalakanta Mahapatra
Keyword(s):  
Buck Converter ◽  
Efficiency Improvement ◽  
Auxiliary Circuit

scholarly journals Efficiency Enhancement of Non-Isolated DC-DC Interleaved Buck Converter for Renewable Energy Sources

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4127
Author(s):  
Matej Bereš ◽  
Dobroslav Kováč ◽  
Tibor Vince ◽  
Irena Kováčová ◽  
Ján Molnár ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Control Strategy ◽  
Renewable Energy Sources ◽  
Input Power ◽  
Buck Converter ◽  
Experimental Results ◽  
Energy Sources ◽  
Efficiency Enhancement ◽  
The Common ◽  
The Right

The article describes the principles based on which it is possible to obtain energy from renewable sources more efficiently. The principles use the conventional DC-DC interleaved buck converter based on the common electronic component types and the control strategy. A novelty of such a proposed solution lies in the methods which are not new, but with the right combination, better results can be achieved. The resulting method can be implemented into various topologies where the highest efficiency for wide input power is required. In case of the renewable energy sources where the power can vary hugely during the day, the proposed method can be implemented. Therefore, the article provides several steps, from calculation through simulation to experimental results that brings reader close to understanding of a such proposed solution.

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