Institut für Elektrische Anlagen und Netze, Digitalisierung und Energiewirtschaft Lehrstuhl für Aktive Energieverteilnetze Einfluss netzbildender Umrichter auf die ungewollte Teilnetzbildung in Verteilnetzen

Erläuterung zum Dokument Die Inhalte dieses Berichts sind im Rahmen der wissenschaftlichen Studie „Technisch- wirtschaftliche Auswirkungen netzbildender Umrichter im Hinblick auf die ungewollte Teil- netzbildung in Verteilnetzen” entstanden, die das IAEW der RWTH Aachen University im Jahr 2023 im Auftrag der Westenergie AG durchgeführt hat. Das vorliegende Dokument beschreibt Teilergebnisse dieser Studie in Form von grundlegenden technischen Voruntersu- chungen zum Einfluss netzbildender Umrichter auf die Wahrscheinlichkeit der ungewollten Teilnetzbildung in elektrischen Verteilnetzen. Das Institut für Elektrische Anlagen & Netze, Digitalisierung & Energiewirtschaft (IAEW) gehört zur Fakultät für Elektrotechnik und Informationstechnik der RWTH Aachen Univer- sity. Unter der Leitung von Univ.-Prof. Dr. sc. A. Ulbig, Univ.-Prof. Dr. W. Leterme und Univ.-Prof. Dr.-Ing. A. Moser bilden mathematische Simulationen, Optimierungen und die Bewertung des technisch-wirtschaftlichen Ausbaus und Betriebs von Energieversorgungssys- temen Schwerpunkte in Forschung, Lehre und Industrieprojekten am IAEW. Das Institut hat in Deutschland und im europäischen Ausland eine Reputation in der professionellen und verständlichen Kommunikation energiewirtschaftlicher und netztechnischer Sachverhalte er- worben und ist als objektiver Gutachter in strategischen Fragen – auch gegenüber Regulie- rungsbehörden – anerkannt. Der Fokus am Lehrstuhl für Aktive Energieverteilnetze gilt insbe- sondere der Konzipierung sowie der simulativen und labortechnischen Analyse zukunftsfähiger dezentraler Energiesysteme. Durch langjährige Erfahrung in der Markt-, Netz- und System- analyse verfügt der Lehrstuhl über detaillierte Kenntnisse zur Bewertung von Potenzialen der Sektorenkopplung auf Verteilnetzebene, Netzausbaumaßnahmen und resilientem Netzbe- trieb, dezentralen Geschäftsmodellen, Chancen digitaler Technologien und Infrastrukturen, Schutzkonzepten und Stabilitätsanalysen mit einer objektiven Ergebnisinterpretation.

FULL PAPER: https://d-nb.info/1335581138/34 

Transformadores de Potencia confiables : Especificaciones Técnicas y Resistencia de Corto circuito-COLEGIO DE INGENIEROS DEL PERU-CIP-LIMA

 

Transformadores de potencia confiables : Especificaciones Tecnicas y Resistencia de Corto circuito-Charla tecnica dirigida :

 Ingeniero Richard Piscoya Rodriguez (ing. Mecanico Eléctrico UNI LIMA -PERU)-HITACHI Energy -Ingeniero Hector Gozales Yamashiro (Ingeniero Eléctrico (UNMSM-LIMA-PERU)-Hitachi energy Organizado por el COLEGIO DE INGENIEROS DEL PERU=CIP-LIMA

Podcast ABDC | Vice-presidente Luis Tossi recebe Aluizio Abdom, Diretor Comercial da Engetron

 

Quero compartilhar com todos o excelente podcast feito pelo Eng,Luis Tossi ao diretor de Engentron Sr.Aluizio Abdom esta empresa Brasileira foi fundada em 27 de dezembro de 1976 e referência na fabricação de UPS online senoidales ,acompanho desde 1990 as pesquisas e desenvolvimentos de seu produtos,totalmente nacional,hardware e software brasileiro com convenios com Universidades brasileiras.

ABDC - Brazilian Data Centers Association Durante a 22ª edição do Happy Hour da ABDC - Brazilian Data Centers Association,o vice-presidente Eng. Luis Tossi recebeu Aluizio Abdom A., Diretor Comercial e de Marketing da Engetron. No bate-papo, Aluízio compartilha a trajetória da Engetron, empresa brasileira que completa 50 anos de atuação no mercado de UPS, destacando sua especialização no desenvolvimento e fabricação de soluções de energia para ambientes críticos. A conversa também aborda inovação tecnológica, fabricação nacional, integração com universidades e os novos desafios do setor de data centers. O episódio traz ainda novidades da empresa para o mercado, reforçando a importância da confiabilidade energética para a infraestrutura digital e o papel das soluções de energia no crescimento do setor de data centers no Brasil. 

 

Fonte de alimentação de 3000 W com refrigeração líquida (usando GaN e SiC) - ElectrArc240

 

ORIGINAL SOURCE : ElectrArc240

Implementation and Analysis of Grid Support Function for a Smart Inverter-by Seon-Haeng Lee- Aju National University Graduate School Department of Electronic Engineering

Implementation and Analysis of Grid Support Function for a Smart Inverter Advisor: Kyo-Beom Lee Submitted as a Master's Thesis in Engineering February 2022 Aju National University Graduate School Department of Electronic Engineering by  Seon-Haeng Lee 

Abstract Sun-Hang Lee Electrical and Computer Engineering Graduate School Ajou University This thesis implements and analyzes a grid support function for a smart inverter. Due to environmental and air pollution issues, the installation of distributed power using renewable energy has been increased. However, various problems arise when power converters with various output characteristics are connected to the system. Therefore, it is necessary to control the output of the inverter according to the voltage and frequency of the grid. This is called a grid support function which is mandatory to install the function in some countries. The inverter equipped with a grid support function is called the smart inverter. In order to utilize various functions, the smart inverter consists of three boards. First, the main control is a DSP board which is equipped with DSP. The main control system is required a digital processor for fast and accurate control. Also, it is necessary to share information with communication equipment. The second is a breaker control board for connection between the grid and distributed power output. Finally, a sensing board that receives various analog information including voltage and current sensors is required. The grid support function for the smart inverter is implemented and analyzed through simulation and experimental results.

Original link:https://www.riss.kr/search/detail/DetailView.do?p_mat_type=be54d9b8bc7cdb09&control_no=8054e07049d75b93ffe0bdc3ef48d419&keyword=Implementation%20and%20Analysis%20of%20Grid%20Support%20Function%20for%20a%20Smart%20Inverter

Alternative link 1:https://www.mediafire.com/file/uq1cnzumozfyy5c/Implementation+and+Analysis+of+grid+support+function+foa+a+smart+inverter.pdf/file 

Alternative link 2: https://mega.nz/file/lddl1b7a#UO7ul5iuuPiByl0sQw4Ows_i0r6OGYtavoRFDvRU83c 

UNMSM -LIMA-PERU : SAN MARCOS DA LA BIENVENIDA A INGRESANTES 2026-II DE INGENIERÍA ELECTRÓNICA Y ELÉCTRICA

 ¡San Marcos recibe a la futura generación de ingenieros! ⚡🎓 La Facultad de Ingeniería Electrónica y Eléctrica de la Universidad Nacional Mayor de San Marcos dio la bienvenida a 375 ingresantes, quienes inician su camino hacia la excelencia y la innovación. 🚀💡 Durante la ceremonia, autoridades destacaron la formación de profesionales altamente capacitados, y se reconoció a los primeros puestos del examen de admisión. 🏅 Así, San Marcos reafirma su compromiso de formar líderes que transformarán el futuro del país

Projeto De Circuitos De Fonte Chaveada Teste de Circuito de Controle Bode

계통 연계 직류 지역망을 위한 양방향 인터링킹 AC/DC 컨버터의 분산형 DC 전압 기반 그리드 포밍 제어기 설계 및 분석 = Design and Analysis of Distributed DC Voltage based Grid Forming Controller for Bidirectional Interlinking AC/DC Converter in Grid-connected DC Local Grid

계통 연계 직류 지역망을 위한 양방향 인터링킹 AC/DC 컨버터의 분산형 DC 전압 기반 그리드 포밍 제어기 설계 및 분석 = Design and Analysis of Distributed DC Voltage based Grid Forming Controller for Bidirectional Interlinking AC/DC Converter in Grid-connected DC Local Grid

Advisor: Professor Raeyoung Kim This thesis is submitted for the Master's degree in Engineering. Hanyang University Graduate School Department of Electrical Engineering 

AUTHOR:Jinwoo Jeong

ABSTRACT This paper proposes and analyzes a distributed DC-voltage-based grid-forming control method for a bidirectional interlinking AC/DC converter to address operational challenges in grid-connected DC Local Grids under weak grid conditions. The proposed method adjusts the DC voltage reference based on AC active power output to perform DC Voltage Droop control while integrating a synchronization controller designed through small-signal modeling to enhance stability. To mitigate Synchronous Oscillation (SO) issues caused by the coupling of DC Voltage Droop and grid-forming control, a Notch Filter was introduced. The proposed method was validated through PLECS and PSCAD simulations, demonstrating stable voltage control and power sharing under both strong (SCR=5) and weak (SCR=2) grid conditions. Compared to conventional Grid-Following control, the proposed approach offers improved stability in weak grids while ensuring proper power sharing, enhancing the reliability and flexibility of DC Local Grids. 

ORIGINAL LINK: https://www.riss.kr/search/detail/DetailView.do?p_mat_type=be54d9b8bc7cdb09&control_no=8d3b7774163776b8ffe0bdc3ef48d419 

ALTERNATIVE LINK: https://www.mediafire.com/file/hnotk10a8h2fofy/Design+and+Analysis+of+Distributed+DC+Voltage+based+Grid+Forming+Controller+for+Bidirectional+Interlinking+ACDC+Converter+in+Grid-connected+DC+Local+Grid.pdf/file 

Research on Control Strategy of Single-phase LCL-Type Grid-Connected Inverter based on Composite Repetitive Control -복합 반복제어에 기반한 단상 LCL-계통연계 인버터의 제어 전략에 관한 연구

Research on Control Strategy of Single-phase LCL-Type Grid-Connected Inverter based on Composite Repetitive Control 

A Dissertation Submitted to the Department of Electronic Engineering and the Graduate School of Cheongju University in partial fulfillment of the requirements for the degree of Doctor of Engineering 

AUTHOR:Fen Liang (양분)

ABSTRACT With the rapid development of new energy generation technologies such as photovoltaic and wind power, the distributed power generation system (DPGS) based on renewable energy has attracted more and more attention all over the world. Grid- connected inverters, as an essential component of DPGS, play an important role in converting DC into AC between photovoltaic, wind power equipment, and the power grid. However, a lot of harmonics are generated by the dead time of the grid-connected inverter, the background harmonics from the grid voltages, nonlinear loads, etc., resulting in poor control performance, high total harmonic distortion (THD), additional power loss, and even system instability. Therefore, improving the quality of current and researching high-quality current control technologies for grid-connected inverters are of great significance. Repetitive control (RC) is widely used in grid-connected inverter control systems due to its excellent harmonic suppression performance. To improve the output current quality of the grid-connected inverter and improve the robustness and control accuracy of the system, this dissertation takes a single-phase grid-connected inverter as an application target, adopts composite repetitive control technology to reduce harmonics content in the output current of the grid-connected inverter. The main works of this dissertation are as follows. (1) A single-phase LCL-type grid-connected inverter model is created, and the parameters of the LCL filter are designed. Furthermore, to eliminate the resonant peaks generated by the LCL filter, various damping strategies are compared and analyzed. (2) By analyzing the principles, stability, harmonic suppression ability of the conventional repetitive control (CRC), and advantages of proportional-integral (PI) control, the composite repetitive controller composed of RC and PI in series or in parallel structures is introduced. Furthermore, taking the proportional integral multi- resonant repetitive control (PIMR-RC) composed of RC and PI in parallel as an example, parameters design, steady-state response, and dynamic performance analysis are conducted in detail. (3) The fundamental frequency of the power grid may fluctuate at ±0.5 Hz in DPGSs, and the ratio N is the sampling frequency to the fundamental frequency of the power grid may be a fraction. However, CRC has excellent control performance only N is an integer, or it will result in a significant decrease in signal tracking and harmonic suppression performance. To ensure that the repetitive controller can accurately track reference current even when the grid frequency fluctuates and to reduce computational load and memory consumption, based on a Farrow-structure filter, a fractional-order delay PIMR-RC (FOD-PIMR-RC) scheme is proposed, which greatly improve the quality of the grid current against frequency fluctuations. Then, the stability analysis and the harmonic suppression performance of the proposed scheme are analyzed. Finally, the simulation results demonstrate the effectiveness of the proposed scheme. (4) To reduce the computational load and memory consumption, multirate repetitive control (MRC) is adopted in the PIMR-RC system for grid-connect inverters. Although MRC provides a flexible and efficient design solution, it usually adopts a downsampling rate approach. CRC with integer-order phase lead compensation cannot exactly compensate for the system phase lag, which may result in an unstable system in the case of low sampling frequency. Therefore, a fractional-order phase lead PIMR-MRC (FOPL-PIMR-MRC) scheme, employing an infinite impulse response (IIR) filter, is presented for grid-connected inverters. The proposed scheme includes the design of a fractional-order phase lead compensation filter, along with stability analysis, parameter design, and comprehensive simulation analysis. The steady-state and dynamic simulation results confirm that the proposed control scheme effectively achieves accurate phase compensation, enhances the stability margin of the system, and reduces hardware consumption. Additionally, it ensures excellent performance in harmonic suppression.

ORIGINAL LINK: 

https://www.riss.kr/search/detail/DetailView.do?p_mat_type=be54d9b8bc7cdb09&control_no=eac0d4320214a784ffe0bdc3ef48d419&keyword=Inverter%20Control%20Strategies%20for%20a%20Grid%20Stabilizing

ALTERNATIVE LINK:

https://www.mediafire.com/file/7k5udulzfe1zti9/Research+on+Control+Strategy+of+Single-phase+LCL-Type+Grid-Connected.pdf/file

APEC 2022, Houston, TX, USA Next-Generation Datacenter MV Interfaces — Will Solid-State Transformers Meet Their Waterloo?

 APEC 2022, Houston, TX, USA

Next-Generation Datacenter MV Interfaces — Will Solid-State Transformers Meet Their Waterloo?