scholarly journals RANCANG BANGUN TRAINER ELEKTRONIKA DAYA: CONTROLLED AND UNCONTROLLED RECTIFIERS

2019 ◽  
Author(s):  
Doni Tri Putra Yanto ◽  
Rahmat HIdayat ◽  
Hamdani
Keyword(s):  
Power Electronics ◽  
Design Process ◽  
Learning Process ◽  
Design Stage ◽  
Power Electronic ◽  
Test Stage ◽  
Passive Filters ◽  
Practical Tool ◽  
Feasibility Test ◽  
Research Stage

This study discusses about the design process of Power Electronics Trainer as Learning Media or practicum equipment in the Power Electronics Practicum learning process, the unavailability of Practical Tool Practicum and Media that can help the implementation of the Power Electronics Learning Process into the background of this research. The research Stage of the Trainer Designation begins with the Design Stage, Product Production Stage, and Laboratory Feasibility Test Stage. This research produces a product in the form of a Power Electronic Trainer specifically for controlled and uncontrolled rectifiers that can be applied in the Power Electronics Practicum learning process. This trainer is made to be able to accommodate all learning materials about 1 phase and 3 phase rectifiers and the use of passive filters such as capacitors and inductors. The Power Electronics Trainer is expected to optimize the implementation of the Power Electronics Practicum Learning Process. Especially can help students in understanding theories about Power Electronics.

Product Modeling, Evaluation and Validation at the Detailed Design Stage

2011 ◽  
Author(s):  
Cristian Iorga ◽  
Alain Desrochers
Keyword(s):  
Product Development ◽  
Design Process ◽  
Design Stage ◽  
Product Modeling ◽  
Specific Product ◽  
Development Processes ◽  
Product Variation ◽  
Process Methodology ◽  
Capstone Projects ◽  
Short Time

The expansion of the markets corroborated with product customization and short time to launch the product have led to new levels of competition among product development companies. To be successful in the globalization of the markets and to enable the evaluation and validation of products, companies have to develop methodologies focused on lifecycle analysis and reduction of product variation to obtain both quality and robustness of products. Keywords: Modeling, Evaluation, Validation, Design ProcessThis paper proposes a new design process methodology that unifies theoretical results of modeling stage and empirical findings obtained from the validation stage. The evaluations and validations of engineering design are very important and they have a high influence on product performances and their functionality, as well on the customer perceptions.Given that most companies maintain the confidentiality of their product development processes and that the existing literature does not provide more detailed aspects of this field, the proposed methodology will represent a technical and logistical support intended for students or engineers involved in academic as well as industrial projects.A generic methodology will be refined based on a new approach that will take into consideration the specification types (quantitative or qualitative), the design objectives and the product types: new/improved, structural/esthetic. Hence the new generic methodology will be composed of specific product validation algorithms taking into account the above considerations. At the end of this paper, the improvements provided by the proposed methodology into the design process will be shown in the context of the engineering student capstone projects at the Université de Sherbrooke.

scholarly journals Research on Small Square PCB Rogowski Coil Measuring Transient Current in the Power Electronics Devices

Sensors ◽  
2019 ◽  
Vol 19 (19) ◽  
pp. 4176 ◽  
Author(s):  
Chaoqun Jiao ◽  
Juan Zhang ◽  
Zhibin Zhao ◽  
Zuoming Zhang ◽  
Yuanliang Fan
Keyword(s):  
Power Electronics ◽  
Printed Circuit Board ◽  
Electronic Devices ◽  
Rogowski Coil ◽  
Bipolar Transistors ◽  
Circuit Board ◽  
Power Electronic ◽  
Insulated Gate Bipolar Transistors ◽  
Printed Circuit ◽  
Internal Structures

With the development of China’s electric power, power electronics devices such as insulated-gate bipolar transistors (IGBTs) have been widely used in the field of high voltages and large currents. However, the currents in these power electronic devices are transient. For example, the uneven currents and internal chip currents overshoot, which may occur when turning on and off, and could have a great impact on the device. In order to study the reliability of these power electronics devices, this paper proposes a miniature printed circuit board (PCB) Rogowski coil that measures the current of these power electronics devices without changing their internal structures, which provides a reference for the subsequent reliability of their designs.

scholarly journals Energy Rating of Buildings to Promote Energy-Conscious Design in Israel

Buildings ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 59
Author(s):  
Abraham Yezioro ◽  
Isaac Guedi Capeluto
Keyword(s):  
Design Process ◽  
Architectural Design ◽  
Residential Building ◽  
Green Building ◽  
Energy Performance ◽  
Basic Unit ◽  
Design Stage ◽  
Design Decision ◽  
Rating Systems ◽  
New Buildings

Improving the energy efficiency of existing and new buildings is an important step towards achieving more sustainable environments. There are various methods for grading buildings that are required according to regulations in different places for green building certification. However, in new buildings, these rating systems are usually implemented at late design stages due to their complexity and lack of integration in the architectural design process, thus limiting the available options for improving their performance. In this paper, the model ENERGYui used for design and rating buildings in Israel is presented. One of its main advantages is that it can be used at any design stage, including the early ones. It requires information that is available at each stage only, as the additional necessary information is supplemented by the model. In this way, architects can design buildings in a way where they are aware of each design decision and its impact on their energy performance, while testing different design directions. ENERGYui rates the energy performance of each basic unit, as well as the entire building. The use of the model is demonstrated in two different scenarios: an office building in which basic architectural features such as form and orientation are tested from the very beginning, and a residential building in which the intervention focuses on its envelope, highlighting the possibilities of improving their design during the whole design process.

scholarly journals Development of Design Process Simulator for the Ship Initial Design Stage

2009 ◽  
Vol 9 (0) ◽  
pp. 211-222
Author(s):  
Kunihiro Hamada ◽  
Mitsuru Kitamura ◽  
Souichi Yasui ◽  
Hiroshi Kawasaki
Keyword(s):  
Design Process ◽  
Design Stage ◽  
Initial Design ◽  
Process Simulator

Pilotáž českého překladu dotazníku stylů učení se cizímu jazyku

2020 ◽  
Author(s):  
Petra Langerová
Keyword(s):  
Qualitative Research ◽  
Factor Analysis ◽  
Pilot Study ◽  
Learning Styles ◽  
Language Learning ◽  
Exploratory Factor Analysis ◽  
Learning Process ◽  
Personality Typology ◽  
Research Stage ◽  
Cognitive Dimensions

The paper deals with the process and results of a pilot study of a language learning styles questionnaire (Ehrman & Leaver, 2003) translated into Czech. The questionnaire is based on psychological personality typology and it focuses on cognitive dimensions of the language learning process. In order to test the reliability of the translation an exploratory factor analysis (EFA) was performed, as the data on the original questionnaire reliability are not available. Factor analysis did not confirm the reliability of the Czech version scale. However, the original questionnaire setting suggests that it is not constructed of independent factors, thus a factor analysis cannot identify independent dimensions. Considering the piloting results analysis is the EFA does not appear as a relevant method for measuring the reliability of the questionnaire scales. The research will thus use the piloted Czech version of the questionnaire followed by a qualitative research stage.

An investigation of the mass-market fashion design process

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Prabod Dharshana Munasinghe ◽  
D.G.K. Dissanayake ◽  
Angela Druckman
Keyword(s):  
Design Process ◽  
Market Design ◽  
High Volume ◽  
Design Stage ◽  
Fashion Design ◽  
Structured Interviews ◽  
Mass Market ◽  
Content Type ◽  
Responsible Consumption ◽  
The Impact

Purpose The process of fashion design varies between market segments, yet these variations have not yet been properly explored. This study aims to examine the fashion design process as practised at the mass-market level, as this is the most vibrant and the largest market segment in terms of production volumes and sales. Design/methodology/approach It is observed that 15 semi-structured interviews were conducted with mass-market fashion designers. Key activities of the mass-market design process were identified and a comparative analysis was conducted with the general design process. Findings The mass-market design process is found to prioritise profits rather than aesthetic aspects, with the buyer exercising more power than the designer. This hinders creativity, which, in turn, may impede a move towards more environmentally benign designs. Originality/value The clothing industry is responsible for high environmental impacts and many of these impacts arise through decisions made in the design stage. In particular, the mass-market for clothing because of its high volume of sales and fast throughput, accounts for a great deal of the impact. However, little is understood about the design process that is practised in the mass-fashion market. This paper fills the gap by developing a framework that describes the mass-market design process. Understanding the design process will enable progress to be made towards achieving the United Nations Sustainable Development Goal 12: Responsible Consumption and Production.

scholarly journals Development of Teaching Materials for Volleyball Games through an PJOK AKTIF Approach (Fun, Character, Measurable, Innovation, and Fit)

2021 ◽  
Vol 5 (1) ◽  
pp. 198-209
Author(s):  
Moh Rufron ◽  
Muhammad Muhyi ◽  
Harwanto Harwanto
Keyword(s):  
Product Development ◽  
Field Test ◽  
Product Development Process ◽  
Design Stage ◽  
Teaching Materials ◽  
Initial Product ◽  
Planning Stage ◽  
Test Stage ◽  
Product Trial ◽  
Class 1

This study aims to determine the level of validity, practicality, and effectiveness of teaching materials for learning PJOK ACTIVE (Fun, Character, Measurable, Innovation, and Fit) at SMP Negeri III Kamal Bangkalan. The benefits of this research are expected to increase students' understanding and students' abilities in PJOK learning practices. This research is a type of development research. There are 10 stages in the product development process starting from the preliminary study stage, planning stage, initial product design stage, field test stage, revision stage, main field test stage, product revision stage, group test stage, final product revision stage, and dissemination stage. The research was conducted at SMPN 3 Kamal Bangkalan from January to May 2021 with a total of 137 students. The data were analyzed using the percentage of the product trial results. The results of the study showed that the results of the product development of teaching materials for ACTIVE PJOK learning for students of SMPN 3 Class 1 in Kamal Bangkalan were declared feasible, very helpful, and could support the implementation of PJOK learning in schools. The results of product development that have been produced can be used as a reference in PJOK learning and besides that it can be developed according to needs.

scholarly journals Videoaulas em primeira pessoa: suas características e sua contribuição para a EaD

EAD em FOCO ◽  
2017 ◽  
Vol 7 (2) ◽  
Author(s):  
Guilherme de Carvalho Pereira ◽  
Lidiane Maria Magalini
Keyword(s):  
Distance Education ◽  
Video Games ◽  
Learning Process ◽  
First Person ◽  
Camera View ◽  
Practical Tool

Desde o início da utilização das ferramentas de vídeo para a educação a distância, vários modelos surgiram de maneira a contribuir com a interação entre aluno e professor. Dentre eles se encontra um modelo de videoaula por meio da captura da tela do computador para ensino de funcionalidades computacionais, entre outros conteúdos. Por utilizar o recurso de câmera subjetiva, tem focalização em primeira pessoa e, assim como no cinema e videogames, proporciona ao aluno-espectador o efeito de imersão e agenciamento, aproximando-o do professor, de quem observa e reproduz as ações. Como ferramenta prática para a EaD mediada por tecnologia, a videoaula em primeira pessoa pode auxiliar no aprendizado dos alunos, no trabalho dos professores e na gestão das instituições.Palavras-chave: Videoaula, Primeira pessoa, Screencast.2 Video Lessons in First Person: their Characteristics and their Contribution to Distance Education AbstractSince the beginning of the use of video tools for distance education, many models for the interaction between student and teacher have emerged. Among those, it is found the screencast model for teaching computer features and other content. By using the subjective camera view and first-person focus, like in the movies and video games, the student is provided with the immersion and agency effects, and is brought closer to the teacher whose actions can be observed and reproduced. As a practical tool for distance education mediated by technology first-person video lessons can help students in the learning process, the teachers work and the management of institutions.Keywords: Video Lessons, First person, Screencast.

scholarly journals FEM Based Preliminary Design Optimization in Case of Large Power Transformers

2019 ◽  
Author(s):  
Tamás Orosz ◽  
David Pánek ◽  
Pavel Karban
Keyword(s):  
Design Optimization ◽  
Design Process ◽  
Optimization Problems ◽  
Optimization Method ◽  
Power Transformers ◽  
Design Stage ◽  
Preliminary Design ◽  
Large Power ◽  
Custom Made ◽  
Transformer Design

Since large power transformers are custom-made, and their design process is a labor-intensive task, their design process is split into different parts. In tendering, the price calculation is based on the preliminary design of the transformer. Due to the complexity of this task, it belongs to the most general branch of discrete, non-linear mathematical optimization problems. Most of the published algorithms are using a copper filling factor based winding model to calculate the main dimensions of the transformer during this first, preliminary design step. Therefore, these cost optimization methods are not considering the detailed winding layout and the conductor dimensions. However, the knowledge of the exact conductor dimensions is essential to calculate the thermal behaviour of the windings and make a more accurate stray loss calculation. The paper presents a novel, evolutionary algorithm-based transformer optimization method which can determine the optimal conductor shape for the windings during this examined preliminary design stage. The accuracy of the presented FEM method was tested on an existing transformer design. Then the results of the proposed optimization method have been compared with a validated transformer design optimization algorithm.

Design and Applications of Controllable Magnetic Devices in Power Electronic Circuits and Power Systems

2021 ◽  
Vol 1 (2) ◽  
pp. 6-14
Author(s):  
Peter Zacharias ◽  
Keyword(s):  
Power Systems ◽  
Power Electronics ◽  
Power Electronic ◽  
Electronic Circuits ◽  
Power Electronic Converters ◽  
Passive Components ◽  
Magnetic Devices ◽  
Magnetic Components ◽  
Power Electronic Circuits ◽  
Overload Capacity

Magnetic components are characterized by high robustness and reliability. Controllable magnetic components, which used to dominate, have been out of fashion for about 50 years. However, they have great advantages in terms of longevity, radiation resistance and overload capacity and become smaller and smaller with increasing operating frequency. This makes them interesting in modern power electronics applications with the increasing use of WGB semiconductors. The article shows how the performance of power electronic converters can be improved with modern power electronics and with field-controlled magnetic components using modern magnetic materials. Keywords: Magnetic components; Passive components; Modelling; Magnetic amplifiers; Controllable filters;

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