A New Single-switch, Electrolytic Capacitor-less Step-up DC/DC Converter Topology with Complete Soft-switching Operation for Photovoltaic Application

2019 ◽  
Author(s):  
Kajanan Kanathipan ◽  
John Lam
Keyword(s):  
Soft Switching ◽  
Electrolytic Capacitor ◽  
Switching Operation ◽  
Photovoltaic Application ◽  
Converter Topology

Study and Implementation of Partial Resonant High-Frequency AC-Link Inverter Operating in Soft-Switching Condition

2021 ◽  
pp. 2150238
Author(s):  
Abdelkarim Aouiti ◽  
Hajer Marzougui ◽  
Faouzi Bacha
Keyword(s):  
High Frequency ◽  
Power Flow ◽  
Power Converter ◽  
Soft Switching ◽  
Correct Operation ◽  
Fundamental Properties ◽  
Dc Power ◽  
Dspace 1104 ◽  
Converter Topology ◽  
High Frequency Ac

In this paper, a high-frequency AC-link DC–AC converter is presented with detailed analysis. This converter is used as an interface between a dc power source and a grid. The studied converter is a universal power converter which consists of two bridges separated by an AC-link; each bridge is connected to a source or it feeds a load. The link of this converter contains a parallel pair inductance-capacitor. The inductance is used to stock/supply energy and for the link capacitor, it allows to perform soft switching during turning on/turning off of the switches. The studied converter has considerable advantages compared to the other topologies. Its fundamental properties are, especially, the compactness, reliability and efficiency which it ensures. Also, it guarantees longer lifetime and the possibility to transfer power in the two power flow directions. In this talk, the principles of the ac-link inverter operation are clearly explained in this paper. Simulation results, under MATLAB/SIMULINK, are shown to validate the correct operation and the efficiency of the proposed converter topology. The control algorithm is, also, experimentally implemented using a dSPACE 1104 control board.

Simulation of efficient non-isolated DC-DC boost converter topology for photovoltaic application

2019 ◽  
Author(s):  
Abdul Malik Mahar ◽  
Pervez Hameed Shaikh ◽  
Adil Rehman Mahar ◽  
Zubair Ahmed Memon ◽  
Shoaib Ahmed Khatri ◽  
...  
Keyword(s):  
Boost Converter ◽  
Photovoltaic Application ◽  
Converter Topology

A Soft Switching Full-Bridge DC-DC Converter with Active Auxiliary Circuit

2015 ◽  
Vol 793 ◽  
pp. 232-236
Author(s):  
Chanuri Charin ◽  
Nur Fairuz Mohamed Yusof ◽  
Mazwin Mazlan ◽  
Noor Haqkimi Adb Rahman
Keyword(s):  
Industrial Applications ◽  
Soft Switching ◽  
Experimental Results ◽  
Switching Loss ◽  
Pv System ◽  
Power Switches ◽  
Bridge Rectifier ◽  
Scale Down ◽  
Converter Topology ◽  
Auxiliary Circuit

DC-DC converters are widely used in many applications such as power supplies, PV system, renewable energy systems and industrial applications. One of the main problems in dc-dc converters is the switching loss which affects efficiency and also the power density of the converter. To alleviate the switching loss problem this paper proposes novel soft switching PWM isolated dc-dc converters topology. The proposed full bridge dc-dc converter with active auxiliary circuit is designed and tested with full-bridge rectifier diode. The proposed converter is designed and evaluated in term of soft switching. In the proposed topology, the soft switching operations are achieved by charging and discharging process of the capacitor and additional switches. In the proposed topology, all the power switches operate under soft-switching conditions. Therefore, the overall switching loss of the power switches is greatly reduced. The output voltage of the converter is varied by PWM control. The effectiveness of the new converter topology is evaluated by experimental results of a laboratory scale down prototype. The obtained experimental results are found agreed with theoretical and soft switching is achieved.

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