Design and control of a PV active generator with integrated energy storages : application to the aggregation of producers and consumers In an urban micro smart grid-THESE Présentée en vue d’obtenir le grade de DOCTEUR en Spécialité : Génie Electrique par Di LU DOCTORAT DELIVRE PAR L’ECOLE CENTRALE DE LILLE

General Introduction
Targets for future sustainable electrical networks The electricity is suffering from a constraint irrefutable: At any moment, electrical systems must ensure a balance between production and consumption, while maintaining a satisfactory voltage. Historically, grid reliability was mainly assured by having excess capacity in the system with unidirectional flow to dispersed consumers from centrally dispatched large power plants. To combat climate change and increase the EU’s energy security while strengthening its competitiveness, the EU Heads of State and Government have set a series of demanding climate and energy targets to be met by 2020, known as the "20-20-20" targets: • A reduction in EU greenhouse gas emissions of at least 20% below 1990 levels, • A 20% reduction in primary energy use compared with projected levels, to be achieved by improving energy efficiency, • 20% of EU energy consumption coming from renewable resources. Current limitation of the PV resource Today, renewable energies are considered as a potential solution for greenhouse gases emissions reduction and energy safety. Fueled by economic, environmental and social drivers, the penetration of photovoltaic generators rises in distribution networks. Thanks to its operation without noise and gas emission, it can be easily installed outdoor and on roofs. But the development of grid-connected PV generation is limited by the intermittent power generation and time-lag between the PV electrical production and the real consumption. A massive deployment of PV systems complicate the balancing between production and consumption, that may cause blackouts if it is disturbed A new concept: the PV based active generator Because of the intermittency of PV power generation, PV panels can not be used as a stable, reliable and controllable power source and can not provide ancillary services like conventional generators. The topic of this thesis is the transformation of a PV generator into an active generator by using an embedded energy storage system and a local energy management system for the coordination of inner sources. Long-term energy storage batteries are used to shave the midday PV power peak and provide a complementary power supply during the night. Fast dynamic ultracapacitors storage can smooth the generated PV power, compensate the power gap and absorb the instantaneous high power peaks. Local controller for a dispatched management Three sources with different characteristics must be coordinated inside the PV active
generator. So for ensuring an optimal operation, a local energy management system of the PV
based active generator has to be developed to enable:
• the management of the renewable energy intermittency and resources,
• the quality of power supply,
• the energy level management,
• the power system protection,
• the provision of grid ancillary services.
This PV based active generator is then an additional controllable dispersed generation,
which have to be dispatched. In the context of a large scale development of PV based active
generators, the operation mode of the electric network will have to be changed.

 LINK
https://tel.archives-ouvertes.fr/tel-00586393/file/Lu_Di_DLE.pdf

A Study on the Design and Operation of ESS for Home Application in Solar Power System by Park Kyung Rag -Dept. of Electrical Engineering The Graduate School Changwon National University, Chang-won, Korea

PV시스템 연계 가정용 ESS의 설계 및 운용에 관한 연구 =  A Study on the Design and Operation of ESS for Home Application in Solar Power System by Park Kyung Rag under the supervision of Prof. Ho-Gyun Ahn, Ph. D. Dept. of Electrical Engineering The Graduate School Changwon National University, Chang-won, Korea
Abstract
 In this paper, by applying the ESS in PV power generation system, it was applied to the design and operation method of the independent power generation system for home application. Recently, the application of ESS using renewable energy is in the limelight. It is possible to complement the unstable power, because it enables stable power spread with independent power generating system. In this paper, DC/DC converter is stabilized of the PV power and perform charging, discharging of the battery. DC/AC inverter is to check the status of power load and describes a supplies electric power. Moreover, by applying six operational modes, at home it is possible to use sufficient power during power failure, the remaining reserve power was studied algorithms that can be sent to the grid. In this paper, verified to 95.7% of the charge-discharge efficiency and 95.7% of the overall efficiency of the system by applying a battery of 4kwh to the system.
LINK
https://www.mediafire.com/file/2y0cjof00x5gsh7/A_Study_on_the_Design_and_Operation_of_ESS_for_Home_Application_in_Solar_Power_System.pdf/file

Compact High-Current Inductors Based on Coupled Tape-Wound Cores By Christian P. Dick and Patrick Deck, TH Köln - Cologne University of Applied Sciences

LINK ORIGINAL:
https://www.bodospower.com/default.aspx

Energy Engineering- Konkuk University -Prof.Kim Ki Sun-KOREA OPEN COURSEWARE

Energy Engineering- Konkuk University Prof. Kim Ki-Sun In this class, we are going to deal with details of various energy-related technologies including solar cells, fuel cells, secondary batteries, and other technologies. Through this class, students will be able to see how these technologies are used to generate useful energies. The ultimate goal is to let students have a growing interest in learning technologies.

High Temperature Superconducting Partial Core Transformers Andrew Lapthorn Doctor of Philosophy in Electrical and Computer Engineering at the University of Canterbury, Christchurch, New Zealand

High Temperature Superconducting (HTS)Partial Core Transformers
Andrew Lapthorn
A thesis presented for the degree of Doctor of Philosophy in Electrical and Computer Engineering at the University of Canterbury, Christchurch, New Zealand

 ABSTRACT
 The thesis begins by providing an introduction to transformer theory. An ideal transformer is examined first, followed by full core transformer theory. The partial core transformer is then introduced and compared to the full core design. An introduction to superconductors is then presented where a simplified theory of superconductivity is given. High temperature superconductors are then examined including their physical structure, superconducting properties and the design of the superconducting wire. The early development of high temperature superconducting partial core transformers at the University of Canterbury is then examined. Early partial core development is discussed followed by some material testing at cryogenic temperatures. This work lead into the development of the first high temperature superconducting partial core transformer. This transformer failed during testing and an examination of the failure mechanisms is presented. The results of the failure investigation prompted an alternative winding insulation design which was implemented in a full core superconducting transformer. The modelling used to design a high temperature superconducting partial core transformer is then presented. Based upon the reverse design method, the modelling is used to determine the components of the Steinmetz equivalent transformer circuit. The modelling includes a combination of circuit theory and finite element analysis. An ac loss model for high temperature superconductors is also presented. A new 15 kVA, 230-230 V high temperature superconducting partial core transformer was designed, built and tested. The windings are layer wound with first generation Bi2223 high temperature superconductor. The modelling was used to predict the performance of the transformer as well as the ac losses of the high temperature superconductor. A series of electrical tests were performed on the transformer including open circuit, short circuit, resistive load, overload, ac withstand voltage and fault ride through tests. The test results are compared with the model. The transformer was found to be 98.2 % efficient at rated power with 2.86 % voltage regulation.

LINK: https://core.ac.uk/download/pdf/35468185.pdf

PVsyst - Curso de Energia Solar Fotovoltaica - Aula 7 introdução ao PVsyst

PVsyst - Curso de Energia Solar Fotovoltaica - Aula 7 introdução ao PVsyst. CurSol Treinamentos em Energia Solar Continuação do Curso de Energia Solar Gratuito. Aula 7 de 10 Tema da aula de hoje: Introdução ao Software PVsyst. Falarei bastante dessa ferramenta nas próximas aulas sobre projetos de Sistemas Isolados ou de Micro geração Distribuída. Curso Oferecido pelo Prof. Flavio Barcelos Gratuitamente via WEB.

Introduction to designing a grid connected PV system in PVsyst.

PVSYST-Dimensionnement photovoltaique

Uso básico del programa PVSyst 5.

Dimensionamento Sistema Solar Fotovoltaico Passo a Passo

Como Dimensionar um Sistema de Energia Solar Fotovoltaica ? Neste vídeo você aprenderá a dimensionar os componentes fundamentais de um sistema solar fotovoltaico residencial e comercial. Será determinado a quantidade de placas fotovoltaicas necessárias para suprir a sua demanda de energia e o tamanho do Inversor necessário para o seu sistema.

 https://youtu.be/i5NG_wHAodk - Dimensionamento Sistema Solar Fotovoltaico Passo a Passo  Website: http://www.fotaic.com.br

Introduction to Aerospace SATELLITES KOREA AEROSPACE UNIVERSITY

Satellites and space It learns the principles, history, and kinds of satellites and learns about our space technology in general as well.

VISITA A FIEE 2019 – FEIRA INTERNACIONAL DA INDÚSTRIA ELÉTRICA, ELETRÔNICA, ENERGIA E AUTOMAÇÃO-SÃO PAULO-BRASIL

COM PROF. ENG. HILTON MORENO DIRETOR DA REVISTA POTENCIA UMA REFERENCIA DA ENGENHARIA ELÉTRICA NO BRASIL.

COM MEUS CAROS AMIGOS PROF. ENG. GUSTAVO BRANCO (GRID POWER SOLUTIONS)
E SR. LUIS SALAS TORRES( EZATEC DISTRIBUIDOR EMPRESA KUNG LONG BATTERY)

COM MEUS CAROS AMIGOS E COLEGAS ENG. GUSTAVO BRANCO E ENG. GEAN

SEMINARIO FIEE

A FIEE, Feira Internacional da Indústria Elétrica, Eletrônica, Energia e Automação, agora em sua 30ª edição, é um evento que ajuda a promover a indústria elétrica, eletrônica, energia e automação, e o desenvolvimento de novas tecnologias e tendências do setor.

 Realiza-se no maior centro de exposições na América Latina, em São Paulo, numa superfície assim dividida: 90.000 m2 de área de exposição + 10.000 m2 de Convention Center, de 23 a 26 julho 2019.

 Os setores envolvidos na feira são: Automação: automação, nanotecnologia, robótica Eletrônica: Electronic Equipment, segurança eletrônica, telecomunicações, manufatura eletrônica (sistemas de montagem e subsistemas) Equipamento industrial: Equipamentos, máquinas e instalações industriais GTDC – Geração, Transmissão, Distribuição e Comercialização de Energia

Electronic Circuits Doris Kim, Soongsil University

Electronic Circuits Doris Kim, Soongsil University 3. AC circuit analysis: Various bridge circuits 4. Structure of transformers: Mutual inductance, transformer ratio, and practical transformers. AC Circuit Analysis Part 2

 This is an introductory course on the basics of electronic circuits. The covered subjects are DC and AC circuits, diodes, semiconductors, and transistors. The students are required to become familiear with electronic circuits and their roles in modern experimental instruments. Since this is not an engineering course, theoretical or analytical details on electronic circuits will not be covered. Instead, basic concepts of circuit elements and practical methods on how to build electronic circuits will be emphasized.

Design for Reliability of Power Electronics for Grid-Connected Photovoltaic Systems Yongheng Yang, Ariya Sangwongwanich, Frede Blaabjerg

Design for Reliability of Power Electronics for Grid-Connected Photovoltaic Systems Yongheng Yang, Ariya Sangwongwanich, Frede Blaabjerg 

 Abstract—Power electronics is the enabling technology for optimizing energy harvesting from renewable systems like Photovoltaic (PV) and wind power systems, and also for interfacing grid-friendly energy systems. Advancements in the power semiconductor technology (e.g., wide band-gap devices) have pushed the conversion efficiency of power electronics to above 98%, where however the reliability of power electronics is becoming of high concern. Therefore, it is important to design for reliable power electronic systems to lower the risks of many failures during operation; otherwise will increase the cost for maintenance and reputation, thus affecting the cost of PV energy. Today’s PV power conversion applications require the power electronic systems with low failure rates during a service life of 20 years or even more. To achieve so, it is vital to know the main life-limiting factors of power electronic systems as well as to design for high reliability at an early stage. Knowhow of the loading in power electronics in harsh operating environments (e.g., fluctuating ambient temperature and solar irradiance) is important for life-time prediction, as the prerequisite of Design for Reliability (DfR). Hence, in this paper, the technological challenges in DfR of power electronics for grid-connected PV systems will be addressed, where how the power converters are stressed considering real-field mission profiles. Furthermore, the DfR technology will be systematically exemplified on practical power electronic systems (i.e., gridconnected PV systems). Index Terms—Reliability, design for reliability, power electronics, physics of failure, mission profiles, thermal loading, degradation, Monte Carlo method, photovoltaic systems.
LINK
https://vbn.aau.dk/ws/portalfiles/portal/250508960/Yongheng_Yang_CPSS_Transactions_on_Power_Electronics_and_Applications_CPSS_TPEA_vol.....pdf

Oscilloscope measurements in power electronics: II. Differential probe - Prof. Sam Ben-Yaakov

Prof. Sam Ben-Yaakov is the Chief Scientist Officer, Director, and co-founder of Green Power Technologies Ltd. He brings to the Company his entrepreneurial experience in theoretical and practical Power Electronics and analog electronic circuits and systems. Prof. Sam Ben-Yaakov serves as a professor and a researcher in the Department of Electrical and Computer Engineering, Ben-Gurion University, Israel. For several years Prof. Ben-Yaakov served as the Chairman and Head of Institute of Electronics of the Ben-Gurion University. In addition he is a well-known consultant to many companies worldwide.

Embedded Computing Design: Pre-Switch Demo in the Lab-Pre-Switch demonstrates their forced-switching AI power technology

This unrehearsed video shows Pre-Switch's James Hamond (CTO) and Derek Kroes (VP Engineering) demonstrating a 10KW full bridge solar inverter running Pre-Switch's AI forced-resonant soft-switching technology (Pre-Flex). Pre-Flex uses a learning AI to predict and generate a forced-resonance voltage waveform, timed accurately to enable zero voltage switching. The demonstration shows discrete IGBTs running at 50Khz at 98.5% efficiency, inverting 320Vdc to 240Vac. Able to work for both IGBT's and wide-bandgap devices, Pre-Flex enables switching losses to be reduced from 80% (IGBT), and 95% (wide-bandgap) enabling up to a 5X to 20X faster Fsw when compared to hard-switched legacy solutions.
LINK
https://www.pre-switch.com

Measuring the Plant Transfer Function of ​a Digitally Controlled Converter-Dr. Ali Shirsavar

Measuring the plant of a digitally controlled converter is not as straightforward as in the analog case. The solution however is quite simple. Set the compensator to a constant value and measure the loop. Dr. Ali Shirsavar explains the details and how to connect the Bode 100 to perform the measurement. Check out www.biricha.com to learn more about digital control of power converters.

Managing Personal Communications & Presentation : Samsung Mobile Marketing-Yonsei University Sean Watts EIC professor Marketing-South Korea

Managing Personal Communications & Presentation : Samsung Mobile Marketing-Yonsei University Sean Watts EIC professor Marketing-South Korea

Principles of International Marketing-PART2-Professor Sean Watts, Korea's Harvard- Yonsei University

This is a video related to Professor Sean Watts’ teaching. Content includes international marketing, international management, cross cultural differences, social media, social media analytics, digital marketing, Managing customers and businesses in a digital world, digital excellence, big data, data analytics, informational systems, online education, etc. Professor Watts is a North American (Cdn) with over 20 years’ experience helping American organizations and another 20 years’ experience working in Asia, now based in Vietnam at RMIT International University in Ho Chi Minh City. Previously Professor Watts was Chair of Business and Economics at EIC, Yonsei University – the “Harvard” of Korea.

Principles of International Marketing-PART1-Professor Sean Watts, Korea's Harvard- Yonsei University

This is a video related to Professor Sean Watts’ teaching. Content includes international marketing, international management, cross cultural differences, social media, social media analytics, digital marketing, Managing customers and businesses in a digital world, digital excellence, big data, data analytics, informational systems, online education, etc. Professor Watts is a North American (Cdn) with over 20 years’ experience helping American organizations and another 20 years’ experience working in Asia, now based in Vietnam at RMIT International University in Ho Chi Minh City. Previously Professor Watts was Chair of Business and Economics at EIC, Yonsei University – the “Harvard” of Korea. –Oct. 27, 2016

Sean can be contacted at : https://www.facebook.com/wattssean