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.

Analysis and Design of an LC Parallel-Resonant DC–DC Converter for a Fuel Cell Used in an Electrical Vehicle

2018 ◽  
Vol 27 (08) ◽  
pp. 1850119 ◽  
Author(s):  
Farhani Slah ◽  
Amari Mansour ◽  
Aouiti Abdelkarim ◽  
Faouzi Bacha
Keyword(s):  
Fuel Cell ◽  
High Frequency ◽  
High Efficiency ◽  
Input Voltage ◽  
Analysis And Design ◽  
High Frequency Transformer ◽  
Zero Current Switching ◽  
Zero Current ◽  
Electrical Vehicle ◽  
Secondary Side

In this paper, the design methodology of a parallel-resonant [Formula: see text] converter for fuel cell applications in the electric vehicle is proposed in order to achieve high efficiency. Although the converter is unidirectional, it is interposed between the fuel cell and the DC link. Additionally, the converter is made up of two full bridges, an [Formula: see text] resonant filter and a planar transformer. The use of a high-frequency transformer enables to minimize the converter size and the weight, to produce a higher voltage in the secondary side from an input voltage (fuel cell) and to isolate the full bridges. Furthermore, the rectifier diodes operate with a zero-current switching. Therefore, an experimental converter prototype has been designed, simulated, built and tested in the laboratory. Finally, a prototype having 30[Formula: see text]V as an input and 150[Formula: see text]V as an output with 500[Formula: see text]W is designed to demonstrate and analyze the proposed converter.

scholarly journals High Frequency Transformer for Ship Electrical Power System

2018 ◽  
Vol 9 (2) ◽  
pp. 347
Author(s):  
AnuPriya K R ◽  
Sasilatha T
Keyword(s):  
High Frequency ◽  
Output Voltage ◽  
Electrical Power ◽  
Device Performance ◽  
Electrical Power System ◽  
Matrix Converters ◽  
Electrical Device ◽  
Line Frequency ◽  
High Frequency Transformer ◽  
The Impact

The system represented during this paper uses 3 matrix converters and a high frequency electrical device to attain isolation and voltage transformation from primary to secondary aspect. Two matrix converters manufacture high frequency voltage across a transformer, with open all over primary. a 3rd matrix device converts the high frequency cut voltage to line frequency. The non-idealities like outflow inductance of the electrical device have a big impact on the device performance. This paper studies the impact of outflow inductance on the regulation of the output voltage of the device. The simulation study has been carried out in SIMULINK and also the results are presented.

scholarly journals Robot vision application on embedded vision implementation with digital signal processor

2020 ◽  
Vol 17 (1) ◽  
pp. 172988141990043
Author(s):  
Xiaochun Guan ◽  
Jianlin Huang ◽  
Tinglong Tang
Keyword(s):  
Embedded System ◽  
Digital Signal Processor ◽  
Robot Vision ◽  
Digital Signal ◽  
Handwritten Digit Recognition ◽  
Embedded Vision ◽  
Detection Algorithms ◽  
Digit Recognition ◽  
Handwritten Digit ◽  
Signal Processor

The great development of robot vision represented by deep learning places urgent demands on embedded vision implementation. This article introduces a hardware framework for implementation of embedded vision based on digital signal processor, which can be widely used in robot vision applications. Firstly, the article discusses implementation of a pretrained typical convolutional neural network on the digital signal processor embedded system for real-time handwritten digit recognition. Then, the article introduces the migration of OpenCV software packages to digital signal processor embedded system and the implementation flow of face detection algorithms with OpenCV on digital signal processor. The experimental results are remarkable with convolutional neural networks for handwritten digit recognition. This article provides a convenient and feasible design scheme of digital signal processor system for implementation of embedded vision.

High Efficiency Operation Conditions in Polymer Electrolyte Fuel Cell System with Hydrogen Circulation

2020 ◽  
Vol MA2020-02 (34) ◽  
pp. 2211-2211
Author(s):  
Yulei Ma ◽  
Kazuhiro Yamaguchi ◽  
Miho Kageyama ◽  
Motoaki Kawase
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte ◽  
High Efficiency ◽  
Cell System ◽  
Polymer Electrolyte Fuel Cell ◽  
Fuel Cell System ◽  
Operation Conditions

High-frequency drive of high-Xe-content PDPs for high efficiency and low-voltage performance

2004 ◽  
Vol 12 (2) ◽  
pp. 191 ◽  
Author(s):  
Tetsuo Minami ◽  
Tomokazu Shiga ◽  
Shigeo Mikoshiba ◽  
Gerrit Oversluizen
Keyword(s):  
High Frequency ◽  
High Efficiency ◽  
Low Voltage ◽  
Voltage Performance
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