Zero-voltage and zero-current hybrid soft-switching phase-shifted PWM DC-DC power converter for high power applications

2002 ◽  
Author(s):  
T. Morimoto ◽  
S. Shirakawa ◽  
O. Koudriavtsev ◽  
M. Nakaoka
Keyword(s):  
High Power ◽  
Power Converter ◽  
Soft Switching ◽  
Dc Power ◽  
Zero Current ◽  
Zero Voltage

Single-Switch Soft-Switched Boost Power Factor Corrector for Modular Applications

2016 ◽  
Vol 7 (2) ◽  
pp. 279
Author(s):  
Tomas A. Gonzalez ◽  
Daniel O. Mercuri ◽  
Hernan E. Tacca ◽  
Maximo E. Pupareli
Keyword(s):  
Power Factor ◽  
High Power ◽  
High Efficiency ◽  
Magnetic Components ◽  
Dc Power ◽  
Zero Current ◽  
Three Phase ◽  
Power Factor Corrector ◽  
Zero Voltage ◽  
Efficiency And Reliability

Modern dc power supplies provide power factor correction but the classical two-stage approach, using hard-switched preregulators, has detrimental effects on efficiency and reliability, particularly for high power applications. With some circuit modifications and the addition of a few magnetic components, diodes and capacitors, we have turned a classical boost power factor corrector into a high efficiency soft-switched version. The proposed converter turns on its single switch with zero current and turns it off with zero voltage. In this paper we explain the proposed changes, we study the waveforms and equations and we verify them with an experimental prototype. We also show how the converter can be used for modular single- and three-phase high power applications.<br /><br />

scholarly journals Bidirectional DC/DC Power Converter for Hybrid Yacht Propulsion System

2018 ◽  
Vol 2 (Special edition 2) ◽  
pp. 133-142
Author(s):  
Saša Sladić ◽  
Damir Kolić ◽  
Marko Šuljić
Keyword(s):  
Low Power ◽  
Critical Points ◽  
High Power ◽  
Thermal Imaging ◽  
Cost Effective ◽  
Power Converter ◽  
Propulsion System ◽  
Typical Application ◽  
Electric Drives ◽  
Dc Power

Typical application of bidirectional DC/DC power converter exists in hybrid cars. Recently, a similar approach has been applied in hybrid propelled ships as well. In this paper, a novel low power bidirectional DC/DC power converter of standard Buck/Boost topology has ben designed in order to explore possibilities of the high power design in maritime applications. In order to discover critical points of a design, thermal imaging has been investigated. The results clearly indicate that the proposed solution is more cost effective than a typical standard bidirectional DC/DC power converter. Likewise, the improvement in maneuvering of the propelled vessel system with two and more electric drives has been investigated and compared to a classical diesel, single engine propulsion system.

A Novel High Power Factor Soft-Switching Converter

2012 ◽  
Vol 433-440 ◽  
pp. 5549-5555
Author(s):  
Yun Tao Yue ◽  
Yan Lin
Keyword(s):  
Power Factor ◽  
High Power ◽  
Power Supply ◽  
High Efficiency ◽  
Soft Switching ◽  
Switching Converter ◽  
Turn On ◽  
High Power Factor ◽  
Power Factor Corrector ◽  
Zero Voltage

A novel scheme of low power communication power supply with high power factor and soft-switching is presented, a power factor corrector and dc/dc converter of passive lossless soft-switching is based on a ML4803 IC control. DC/DC converter introduces a novel two-transistor forward soft-switching technique, which realizes zero-voltage turn-on and turn-off, with no additional switches. a communication power supply module is developed in this paper. It has the characteristics of rapid dynamic response, high power factor, high efficiency and small bulk ect.

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.

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