scholarly journals Design and Implementation of a Modular Bidirectional Switch Using SiC-MOSFET for Power Converter Applications

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Edgar Maqueda ◽  
Jorge Rodas ◽  
Sergio Toledo ◽  
Raúl Gregor ◽  
David Caballero ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Modular Form ◽  
Modular Design ◽  
Power Conversion ◽  
Power Converter ◽  
Power Device ◽  
Power Losses ◽  
Design And Implementation ◽  
Key Issues

The bidirectional switch (Bi-Sw) is a power device widely used by power conversion systems. This paper presents a novel modular design of a Bi-Sw with the purpose of providing to beginner researchers the key issues to design a power converter. The Bi-Sw has been designed in modular form using the SiC-MOSFET device. The Bi-Sw uses the advantages of SiC-MOSFET to operate at high switching frequencies. The verification of the module is carried out experimentally by means of the implementation in a voltage regulating converter, where performance analysis, power losses, and temperature dissipation are performed.

scholarly journals REAL TIME PERFORMANCE ANALYSIS OF BUCK DC-DC CONVERTER

2013 ◽  
pp. 91-95
Author(s):  
INDERPREET KOUR ◽  
NAVDEEP KAUR
Keyword(s):  
Performance Analysis ◽  
Direct Current ◽  
High Performance ◽  
Substantial Reduction ◽  
Power Converter ◽  
Buck Converter ◽  
Power Losses ◽  
Time Performance ◽  
High Side ◽  
Higher Power

Buck converter high side switching configuration can affect substantial reduction in power converter performances, allowing considerable higher power losses. This paper investigates a buck topology that achieves improved perfomance of direct current dc-dc buck converter by increasing duty cycle and by selecting low side switching configuration to reduce the power losses . The performance of buck converter for both high side switching configuration and low side switching configuration is analyzed. The design of buck converter circuit are investigated. The experimental results demonstrate the feasibility and high performance of the dc- dc buck converter. The analysis is verified experimentally using LVDAC - EMS.

scholarly journals A GaN-HEMT Compact Model Including Dynamic RDSon Effect for Power Electronics Converters

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2092
Author(s):  
Ke Li ◽  
Paul Leonard Evans ◽  
Christopher Mark Johnson ◽  
Arnaud Videt ◽  
Nadir Idir
Keyword(s):  
Power Electronics ◽  
Physical Model ◽  
Order Reduction ◽  
Power Converter ◽  
Compact Model ◽  
Voltage Source ◽  
Power Losses ◽  
Gan Hemt ◽  
Operation Conditions ◽  
Power Electronics Converters

In order to model GaN-HEMT switching transients and determine power losses, a compact model including dynamic RDSon effect is proposed herein. The model includes mathematical equations to represent device static and capacitance-voltage characteristics, and a behavioural voltage source, which includes multiple RC units to represent different time constants for trapping and detrapping effect from 100 ns to 100 s range. All the required parameters in the model can be obtained by fitting method using a datasheet or experimental characterisation results. The model is then implemented into our developed virtual prototyping software, where the device compact model is co-simulated with a parasitic inductance physical model to obtain the switching waveform. As model order reduction is applied in our software to resolve physical model, the device switching current and voltage waveform can be obtained in the range of minutes. By comparison with experimental measurements, the model is validated to accurately represent device switching transients as well as their spectrum in frequency domain until 100 MHz. In terms of dynamic RDSon value, the mismatch between the model and experimental results is within 10% under different power converter operation conditions in terms of switching frequencies and duty cycles, so designers can use this model to accurately obtain GaN-HEMT power losses due to trapping and detrapping effects for power electronics converters.

Modular event-based systems

2002 ◽  
Vol 17 (4) ◽  
pp. 359-388 ◽  
Author(s):  
LUDGER FIEGE ◽  
GERO MÜHL ◽  
FELIX C. GÄRTNER
Keyword(s):  
Product Development ◽  
Formal Specification ◽  
Modular Design ◽  
Coupled Systems ◽  
Loosely Coupled Systems ◽  
Loosely Coupled ◽  
Design And Implementation ◽  
Systems Research ◽  
Event System ◽  
Event Based

Event-based systems are developed and used to integrate components in loosely coupled systems. Research and product development have focused so far on efficiency issues but neglected methodological support to build such systems. In this article, the modular design and implementation of an event system is presented which supports scopes and event mappings, two new and powerful structuring methods that facilitate engineering and coordination of components in event-based systems. We give a formal specification of scopes and event mappings within a trace-based formalism adapted from temporal logic. This is complemented by a comprehensive introduction to the event-based style, its benefits and requirements.

scholarly journals Using an Adversary Hearing to Evaluate the Effectiveness of a Military Program

2015 ◽  
Author(s):  
Richard Miller ◽  
Jeanne Butler
Keyword(s):  
Professional Development ◽  
Program Effectiveness ◽  
Development Program ◽  
Professional Development Program ◽  
Design And Implementation ◽  
Key Issues ◽  
Development Initiatives ◽  
Survey Evaluation

This study describes the design and implementation of an adversary hearing used to evaluate professional development initiatives in a military environment. The adversary hearing model used in the evaluation was developed to meet the requirements of an environment that differs from other environments in which adversary hearings have been used. The evaluation was conducted to determine whether a professional development program of the U. S. Army, Europe, actually enhanced soldier development and demonstrated consideration by leaders for their followers. Several key issues relate d to program effectiveness were discovered in the process of the adversary hearing that were not evident in a survey evaluation of the program.

The Design and Implementation of Rural Communication Technology Initiatives

2004 ◽  
pp. 83-99
Author(s):  
Lyn Simpson ◽  
Leonie Daws ◽  
Leanne Wood
Keyword(s):  
Social Capital ◽  
Social Networks ◽  
Rural Communities ◽  
Community Development ◽  
Communication Technology ◽  
Design And Implementation ◽  
Community Technology ◽  
Key Issues ◽  
Technology Initiatives ◽  
Potential Interactions

Communication technology initiatives have proved to be an important influence in rural communities in recent years. Our research has demonstrated that such initiatives have far-reaching effects on a community’s formal and informal social networks and, as a result, on its social capital. Given this fact, it is critical that leaders and management committees of community technology projects are aware of the broader social context in which project activities take place, and the potential interactions that can both benefit and damage community social capital. This chapter addresses key issues that have arisen out of a number of major communication technology projects in Queensland, Australia, and draws upon our findings to propose guidelines that will assist project planners with the design and implementation of future communication technology initiatives in the context of regional and rural community development.

Students' Acceptance of Mobile Learning

2020 ◽  
pp. 354-373
Author(s):  
Xiaoqing Li
Keyword(s):  
Mobile Learning ◽  
Rapid Development ◽  
Learning Systems ◽  
Mobile Users ◽  
Learning Approach ◽  
Key Factors ◽  
Mobile Learn ◽  
Design And Implementation ◽  
Research Findings ◽  
Key Issues

With the rapid development of telecommunications, mobile learning is appearing as a promising learning approach for students to learn anytime anywhere. However, many key issues regarding the design and implementation of mobile learning are still unclear. This research investigates key factors leading to the acceptance of mobile learning based on students' use of Blackboard Mobile Learn. The research findings will help instructors to design courses for mobile users and system developers to design better mobile learning systems.

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