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"An Improved Buck Converter with Zero Output Current Ripple and Soft-Sw" by Shamim Mohammadsalehian, Parham Mohseni et al.

This study presents a simple auxiliary circuit to provide a soft-switching condition in the conventional buck converter without an additional active component. Advantages of the proposed structure can be summarized as decreased switching losses by structure operation under zero voltage switching (ZVS) conditions, declined reverse recovery losses of diodes by providing zero current switching (ZCS) turn off condition, and reduced the output current ripple to near zero. The proposed auxiliary circuit and its performance with the conventional buck converter have been analyzed in details. Also, the calculation of the proposed converter's voltage gain and the design procedure of the components are presented. Eventually, simulation results are given to confirm the validity of the suggested converter and its theoretical analysis. ....

Buck Converter , Soft Switching , Ero Output Current Ripple , Zero Voltage Switching ,

"Soft-Switched Three-Port DC-DC Converter with Simple Auxiliary Circuit" by Rasoul Faraji, Lei DIng et al.


Abstract
In this paper, a new high efficiency soft-switching non-isolated three-port converter (TPC) is proposed. In the conventional TPC, three switches are required to process power in different directions between inputs and output. Providing soft-switching condition for all switches using a low number of auxiliary components is a challenging task. In this paper, the conventional TPC topology is modified by changing its structure and adding a simple auxiliary circuit such that all switches operate under soft-switching condition in all operating modes. To reduce the volume of the converter, the magnetic components are integrated using a coupled inductor in the auxiliary soft-switching cell. In this paper, various converter operating modes are presented, and design considerations are discussed. Finally, a prototype 200 W, 100 V converter is implemented in the laboratory, and the theoretical analysis is validated by the experimental results. ....

Dc Converters , Distributed Energy Systems , Hybrid Power Systems , Ulti Input Converter , Soft Switching , டச் மாற்றிகள் ,