Effect of Neutral Grounding Resistance on Grid-Tie Active Front End Power Converter Systems Under Normal and Abnormal Conditions

2021 ◽  
Author(s):  
Zhijun Liu ◽  
Gary L. Skibinski
Keyword(s):  
Power Converter ◽  
Grounding Resistance ◽  
Front End

Front-End Power Converter Topologies for Plug-In Electric Vehicles

2021 ◽  
pp. 157-190
Author(s):  
Chandra Sekar S. ◽  
Asheesh K. Singh ◽  
Sri Niwas Singh ◽  
Vassilios G. Agelidis
Keyword(s):  
Electric Vehicles ◽  
Power Converter ◽  
Front End ◽  
Converter Topologies

scholarly journals Design and simulation of front end power converter for a microgrid with fuel cells and solar power sources

2017 ◽  
Vol 263 ◽  
pp. 052003
Author(s):  
Chetankumar Jeevargi ◽  
Anuj Lodhi ◽  
Allu Sateeshkumar ◽  
D Elangovan ◽  
G Arunkumar
Keyword(s):  
Fuel Cells ◽  
Solar Power ◽  
Power Converter ◽  
Power Sources ◽  
Front End

scholarly journals DESIGN OF A MICROCONTROLLER BASED PFC

2013 ◽  
pp. 58-62
Author(s):  
PRADEEP KUMAR ◽  
P.R. SHARMA ◽  
ASHOK KUMAR
Keyword(s):  
Power Factor ◽  
Power Supply ◽  
Power Factor Correction ◽  
Power Converter ◽  
International Standards ◽  
Control Methods ◽  
Current Harmonics ◽  
Front End ◽  
Increasing Demand ◽  
And Control

With the increasing demand for power from the ac line and more stringent limits for power quality, power factor correction has gained great attention in recent years. A variety of circuit topologies and control methods have been developed for the PFC application. International Standards in the area of compliance of a product’s AC mains current harmonics have forced that new power supply design must include the power factor correction at the front end. The new trend in Power Supply is towards the digital control. This paper discusses the design of a controller for Power Factor Correction (PFC). A microcontroller based PFC design is proposed and design issues are discussed. PFC is simulated using MATLAB and results are reported. Interface requirement between the power converter and microcontroller are discussed.

Low-voltage BIMOS AM front-end amplifier

1990 ◽  
Vol 137 (1) ◽  
pp. 57 ◽  
Author(s):  
M. Steyaert ◽  
Z. Chang
Keyword(s):  
Low Voltage ◽  
Front End

Becoming the Nuclear-Front-End

2017 ◽  
Vol 47 (189) ◽  
Author(s):  
Patrick Schukalla
Keyword(s):  
Nuclear Reactor ◽  
Chemical Elements ◽  
High Technology ◽  
Power Production ◽  
Uranium Mining ◽  
Nuclear Industry ◽  
Current State ◽  
Front End ◽  
Production And Consumption ◽  
Uranium Exploration

Uranium mining often escapes the attention of debates around the nuclear industries. The chemical elements’ representations are focused on the nuclear reactor. The article explores what I refer to as becoming the nuclear front – the uranium mining frontier’s expansion to Tanzania, its historical entanglements and current state. The geographies of the nuclear industries parallel dominant patterns and the unevenness of the global divisions of labour, resource production and consumption. Clearly related to the developments and expectations in the field of atomic power production, uranium exploration and the gathering of geological knowledge on resource potentiality remains a peripheral realm of the technopolitical perceptions of the nuclear fuel chain. Seen as less spectacular and less associated with high-technology than the better-known elements of the nuclear industry the article thus aims to shine light on the processes that pre-figure uranium mining by looking at the example of Tanzania.

Análisis de la aplicación de pruebas funcionales y pruebas de usabilidad de software en el desarrollo de sistemas web

2019 ◽  
Vol 3 (3.4.) ◽  
pp. 180-190
Author(s):  
Natalia Patricia Layedra Larrea ◽  
Marco Vinicio Ramos Valencia ◽  
Blanca Faustina Hidalgo Ponce ◽  
Angela Elizabeth Samaniego Orozco
Keyword(s):  
Front End ◽  
El Sistema

El objetivo general del presente trabajo es analizar la aplicación de pruebas funcionales y pruebas de usabilidad en sistemas web. Para aplicar dichas pruebas se desarrolló un sistema web para la gestión de reuniones eclesiásticas para la Iglesia Bíblica Riobamba. El sistema fue desarrollado utilizando la metodología de desarrollo SCRUM, que permitió realizar un análisis de los requerimientos levantados tanto en prioridad de desarrollo como en el tiempo en que se realiza cada uno; además, se utilizó la tecnología AngularJS para el front end, mientras que para el back end se trabajó con el lenguaje de programación JAVA en el entorno de desarrollo Netbeans 8.2, y servicios RestFULL que permiten la conexión entre el front end y el back end. Finalmente, para la gestión de la base de datos se utilizó PostgreSQL. Sobre el sistema se han ejecutado pruebas de funcionamiento y usabilidad. Para obtener los resultados de la usabilidad del sistema se aplicó una encuesta de usabilidad a un grupo de 20 usuarios con distintos roles dentro del sistema, de los cuales el 90.14% manifestaron que pudieron usarlo fácilmente. Las pruebas de funcionamiento se aplicaron en el módulo de autenticación de usuarios, considerando que existen varios roles. Como resultado de las pruebas de funcionamiento se obtuvo un funcionamiento adecuado del módulo, en base a lo esperado por los usuarios.

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