High-Frequency Transformer Isolated AC-DC Converter for Resilient Low Voltage DC Residential Grids

2018 ◽  
pp. 147-155
Author(s):  
Nelson Santos ◽  
J. Fernando Silva ◽  
Vasco Soares
Keyword(s):  
High Frequency ◽  
Low Voltage ◽  
High Frequency Transformer

Design of a High Efficiency Fuel Cell dc/dc Converter Dedicated to Transportation Applications

2008 ◽  
Vol 5 (4) ◽  
Author(s):  
Abdellah Narjiss ◽  
Daniel Depernet ◽  
Frédéric Gustin ◽  
Daniel Hissel ◽  
Alain Berthon
Keyword(s):  
Fuel Cell ◽  
Embedded System ◽  
Digital Signal Processor ◽  
High Frequency ◽  
High Efficiency ◽  
Low Voltage ◽  
Electrical Power ◽  
Digital Signal ◽  
Polymer Electrolyte Fuel Cell ◽  
High Frequency Transformer

This work consists in a theoretical and practical study of a dc/dc converter designed to be coupled to a fuel cell stack in transport applications. It also proposes analysis and control of the whole system using digital signal processor (DSP) controller. The research is focused on the integration of a polymer electrolyte fuel cell (PEFC) stack in an embedded system. The fuel cell is characterized by a low-voltage high-current electrical power deliverty. Therefore, it is obvious that a dedicated power interface is necessary to adapt and fix voltage and current levels accordingly to the application requirements. In our case, the power conversion will be done by a high-frequency-transformer-based DC/DC converter. The use of a high frequency transformer allows obtaining significant output voltage ratio (approximately 12 in our case), high efficiency, reduce compactness of used elements and limited semi-conductors losses.

scholarly journals Development of Low-Voltage and Large-Current DC Power Supply with High-Frequency Transformer Coupling

2006 ◽  
Vol 126 (1) ◽  
pp. 48-55 ◽  
Author(s):  
Toshihiko Noguchi ◽  
Kosuke Nishiyama ◽  
Keiichi Ishida ◽  
Yoshihisa Asai ◽  
Toru Matsubara
Keyword(s):  
Power Supply ◽  
High Frequency ◽  
Low Voltage ◽  
Dc Power ◽  
High Frequency Transformer ◽  
Large Current ◽  
Transformer Coupling ◽  
Dc Power Supply

Design of High Current Two-Way DC/DC Converter in Lithium-Ion Battery Formation Equipment

2012 ◽  
Vol 241-244 ◽  
pp. 671-675
Author(s):  
Dong He ◽  
Gen Wang Liu ◽  
Ke Song ◽  
Dan Wu
Keyword(s):  
High Frequency ◽  
Low Voltage ◽  
High Reliability ◽  
Lithium Ion ◽  
High Current ◽  
High Frequency Transformer ◽  
Feedback Module ◽  
Driving Circuit ◽  
Critical Process

As the critical process in battery production, formation is related to the quality of battery and directly affects production cost. A low voltage, high current DC/DC converter is designed for large capacity lithium battery formation equipment. Design of basic topological structure, feedback module and peripheral steering circuit are introduced. Besides, design of PWM driving circuit and parameters of high- frequency transformer are presented in detail. This two-way DC/DC converter has features of high stability, high reliability, small size, light weight and its efficiency of buck-boost can be up to 84% and 83% respectively.

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