Analysis, Design, and Control of a Modular Multilevel Series-Parallel Converter (MMSPC) Zur Erlangung des akademischen Grades eines DOKTOR-INGENIEURS von der KIT-Fakultät für Elektrotechnik und Informationstechnik des Karlsruher Instituts für Technologie (KIT)

Analysis, Design, and Control of a Modular Multilevel Series-Parallel Converter (MMSPC) Zur Erlangung des akademischen Grades eines DOKTOR-INGENIEURS von der KIT-Fakultät für Elektrotechnik und Informationstechnik des Karlsruher Instituts für Technologie (KIT) genehmigte

 DISSERTATION von M.Eng. Christian Korte geb. in: Gerolstein

 Vorwort 

Diese Arbeit entstand während meiner Tätigkeit als wissenschaftlicher Mitarbeiter am Elektrotechnischen Institut (ETI) des Karlsruher Instituts für Technologie (KIT). Im Rahmen einer wissenschaftlichen Kooperation hatte ich die Möglichkeit einen neuartigen Ansatz zur Realisierung des elektrischen Automobil-Antriebsstrangs zu erforschen. Dieser Ansatz, der Modular Multilevel Series-Parallel Converter (MMSPC), zieht eine umfassende Umgestaltung der elektrischen Automobil-Architektur nach sich. Aus diesem Grund habe ich mir die Aufgabe gesetzt, einen möglichst fundamentalen wissenschaftlichen Vergleich zwischen dem herkömmlichen Ansatz und dem MMSPC zu erarbeiten. Ferner habe ich mich darauf konzentriert, die Leistungsfähigkeit des MMSPC durch Regelung zu erhöhen. Ohne die durchgehende Unterstützung aus meinem privaten und beruflichen Umfeld wäre es nicht möglich gewesen, diese Arbeit erfolgreich abzuschließen. Dafür möchte ich mich bei allen Beteiligten herzlich bedanken. Insbesondere gilt dieser Dank meinem Doktorvater Prof. Dr.-Ing Marc Hiller, der es mir ermöglicht hat mit großer wissenschaftlicher Freiheit an meiner Arbeit zu forschen. Bei Prof. Dr.-Ing Dieter Gerling bedanke ich mich ebenfalls für die Begutachtung und die Übernahme des Korreferats. Zudem möchte ich mich bei Prof. Dr.-Ing Malte Jaensch und Prof. Dr.-Ing. Stefan Götz bedanken, für das entgegengebrachte Vertrauen und die große Unterstützung während meiner Tätigkeit bei Porsche Engineering. Ohne die außergewöhnliche Atmosphäre und Kollegialität am ETI wäre die Entstehung dieser Arbeit mit deutlich weniger Freude und guten Erinnerungen verbunden. Dafür bedanke ich mich bei allen Kollegen und Studenten des ETI, mit denen ich das Vergnügen hatte zu Arbeiten. Mein Dank richtet sich insbesondere an Daniel, für die viele Hilfe bei meinen Publikationen, dafür dass Du immer die Wissenschaft am ETI vorangetrieben hast und vor Allem für die ganzen unvergesslichen Erlebnisse die wir geteilt haben. Weiterhin möchte ich mich bei Firat, Patrick, Simon, Felix, Felix und Tobi für Eure andauernde Unterstützung und die großartige Zeit bedanken. Seit meiner Kindheit haben mir meine Eltern und (meistens) meine Schwester jederzeit den Rückhalt gegeben, den ich benötigte um erfolgreich meine Fortbildung und meine Promotion zu bestehen. Dafür bedanke ich mich herzlichst, denn ohne Euch hätte es nicht klappen können. Während meiner Promotion hat Ravina am meisten miterlebt, wie ich mit der Arbeit gekämpft habe. Dennoch hast Du mir immer geholfen das Beste aus mir herauszuholen und immer an meinen Erfolg geglaubt. Danke dafür und dass Du eine wundervolle Freundin bist!

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https://publikationen.bibliothek.kit.edu/1000143696/148566983

THE SMART: PROVIDING SERVICE TO THE ELECTRIC NETWORK AND ADDRESSING THE RELIABILITY CHALLENGES THROUGH POWER ROUTING by Dr Marco Liserre de la Univ de KIEL

 

Conferencia con el Dr Marco Liserre de la Univ de KIEL THE SMART: PROVIDING SERVICE TO THE ELECTRIC NETWORK AND ADDRESSING THE RELIABILITY CHALLENGES THROUGH POWER ROUTING POR EL ANIVERSARIO DEL PROGRAMA DE INGENIERIA ELECTRONICA DEL INSTITUTO CELAYA MEJICO CON LA APRESENTACION DEL PROF. VAZQUEZ NAVA.

ORIGINAL SOURCE: https://ne-np.facebook.com/ing.electro.itc/videos/conferencia-con-el-dr-marco-liserre/937797433441606/

Transferencia de energía inalámbrica para alimentación de implantes médicos: diseño y optimización del enlace inductivo y de la topología conversora de energía Author Rodriguez Tallón, Juan Carlos--Master thesis

 

Description 

Title Transferencia de energía inalámbrica para alimentación de implantes médicos: diseño y optimización del enlace inductivo y de la topología conversora de energía 

Author/s Rodríguez Tallón, Juan Carlos

 Contributor/s Alou Cervera, Pedro Jiménez Carrizosa, Miguel Item 

Type Thesis (Master thesis) Masters title Electrónica Industrial 

Date 2020

 Subjects ElectronicsIndustrial EngineeringMedicine Freetext Keywords Convertidores conmutados, WPT, IPT, Electrónica de Potencia, Electrónica Implantable Faculty E.T.S.I. Industriales (UPM)

 Department Automática, Ingeniería Eléctrica y Electrónica e Informática Industrial 

Creative Commons Licenses Recognition - No derivative works - Non commercial

VIEW FULL THESIS:https://oa.upm.es/57840/1/TFM_JUAN_CARLOS_RODRIGUEZ_TALLON.pdf

Doctoral Dissertation Multi Level Inverter System using Dual Output DC-DC Converter with High Gain Department of Electrical Engineering Graduate School, Chonnam National University BY Ibadullaev Anvar -2021

 

Doctoral Dissertation Multi Level Inverter System using Dual Output DC-DC Converter with High Gain Department of Electrical Engineering Graduate School, Chonnam National University Ibadullaev Anvar February 2021 Multi Level Inverter System using Dual Output DC-DC Converter with High Gain Ibadullaev Anvar Department of Electrical Engineering Graduate School Chonnam National University (Supervised by Professor Park SungJun) 

(Abstract)

 Electricity has a weighty and an important impact on the social, industrial and economic developments of countries around the world because it is an essential ingredient of modern civilization. XXI century civilization depends on constant accessibility of this wealth in order to continue the present form of life and developing. Recently, with the development of green energy producing technology, the use of renewable sources such that photovoltaic arrays(PV), fuel cell sources, etc. have been increasing rapidly. Depending on the new research report published by “Markets and Market“, the inverter market is projected to grow from USD 12.8 billion in 2020 to USD 26.5 billion by 2025. The inverter market is likely to exhibit lucrative growth potential during the forecast period. The growth of the inverter market is expected to be driven by continuosly rising number of industrial and household solar rooftop installations. This exponentially growth of the inverter selling segment can be understood the entering of photovoltaic energy generation plants, HEV(hybrid electric vehicles) and electric vehicles charging stations that has brought new opportunities and challenges in the power electronics industry, especially in terms of the research and development of the main traction three phase AC motor drives. The multilevel inverter structure based topologies gives the OK to these vehicles to hold out to high voltages and power levels without using bulky and hard transformers. And also, the limited installation spaces of the HEVs have also led to the requirement for small size and power efficient inversion devices. Among end users, the residential segment held the largest share of the inverter market in 2019. Continuously rising electricity bills, coupled with supportive government policies worldwide, have led to the increasing adoption of energy conservation measures such as solar rooftop installations for controlling the increased energy expenditure in residential applications. Countries such as Japan, the United States, the Netherlands and Australia which are among the prominent markets for residential rooftop solar installations, have widely adopted solar inverters over conventional non-solar inverters. In addition, countries such as Brazil, the United Kingdom, India and Mexico are currently witnessing significant growth in the residential solar energy market. In modern smart grid solutions, control technologies for the consumption can response based on information about the electricity generation and transmission system and prices in an automatic way to improve the performance and reliability of the system. Demand for better designed hardware topology and controllers is constantly rising as the renewable energy market continues to sharply grow. In a typical residential, or small factory utility photovoltaic arrays are connected in series, in parallel or mixed type to form high DC voltage bus to can connect to DC-AC inverter, which then is connected directly to single or three phase AC Grid. Using renewable power generation systems established with step up dc-dc converters is being popularized because of the rising demand of zero pollution and eco friendly renewable energy sources. In this study, a new constructed multi level inverter system using dual outptut DC–DC converter was proposed to match a low DC voltage output sources, such as photovoltaic source or fuel cell systems with single phase AC grid bus lines. When comparing to other conventional multi level inverters, the proposed multi level inverter has a decreased number of the semiconductors, can create higher quality power with lower THD values, has decreased and balanced voltage stress for dual output dc-dc converter DC capacitors. The proposed topology requires a single DC source. In final, the output viability of the proposed topology is described by simulation and experimental results with 1 kW hardware prototype. While comparing to another counterparts step-up DC–DC converters, the proposed Multi Level Inverter System using Dual output DC-DC converter with high gain performs higher gain and has lower inductor current ripple and lower drain-source voltage stress for power semiconductors. Also the proposed dual output DC-DC converter with high gain creates dual DC voltage output and voltage stresses for the active and passive components have been decreased which is the main superiority of the proposed topology. Steady state analysis in CCM(continuous conduction mode) of the proposed topology is detailly performed. And also the laboratory prototype of the proposed topology is assembled using low voltage low  power switches and low  capacitors. Output DC voltage and AC current control algorithm is performed by employing DSP TMS320F28069F controller based control board. The performance of the proposed topology is verified by a lot of simulation and experimental results.

VIEW FULL DISSERTATION:

https://www.mediafire.com/file/yecvndji384i1k5/Multi+Level+Inverter+System+using+Dual+Output+DC-DC+Converter+with+High+Gain.pdf/file

ORIGINAL SOURCE: http://www.riss.kr/search/detail/DetailView.do?p_mat_type=be54d9b8bc7cdb09&control_no=7aa262e880813a19ffe0bdc3ef48d419&keyword=INVERTER

Next-Generation Ultra-Compact/Efficient Data-Center Power Supply Modules A thesis submitted to attain the degree of DOCTOR OF SCIENCES of ETH ZURICH (Dr. sc. ETH Zurich) presented by GUSTAVO CARLOS KNABBEN

 

Next-Generation Ultra-Compact/Efficient Data-Center Power Supply Modules 

A thesis submitted to attain the degree of DOCTOR OF SCIENCES of ETH ZURICH (Dr. sc. ETH Zurich) presented by GUSTAVO CARLOS KNABBEN MSc EE, UFSC born on 23.05.1992 citizen of Joinville, Brazil accepted on the recommendation of Prof. Dr. Johann W. Kolar, examiner Prof. Dr. Marcelo Lobo Heldwein, co-examiner

Abstract

 The increasingly-electric future requires next-generation power supplies that are compact, efficient, low-cost, and ultra-reliable, even across mains failures, to power mission-critical electrified processes. Hold-up time requirements and the demand for ultra-high power density and minimum production costs, in particular, drive the need for DC/DC power converters with (i) a wide input voltage range, to reduce the size of the hold-up capacitor, (ii) soft-switching over the full input-voltage and load ranges, to achieve low losses that facilitate a compact realization, and (iii) complete PCB-integration for low-cost manufacturing. Wide-bandgap power semiconductors, with excellent on-resistance properties and low switching and reverse-recovery losses, come along these requirements toward the conceptualization of nextgeneration power-supply modules, but cannot alone catapult state-of-theart converter technology to the performance baseline of future automotive, automated manufacturing and hyperscale data-center applications. Instead, the combination of wide-bandgap devices with proper converter topology, control and magnetics design has proven to be the real enabler of power supplies for the increasingly-electric future. This thesis makes a case for the combination of these three features (widebandgap devices, proper topology/control and advanced magnetics) as the keys for paving the way toward next-generation power-supply modules. Therefore, a suitable low-complexity circuit topology with improved control scheme that operates across a wide-input-voltage range with complete softswitching is identified, which switches efficiently at higher frequencies and high output currents with PCB-integrated magnetics, improving significantly power density compared to state-of-the-art designs. This topology embeds a sophisticated PCB-integrated matrix transformer that has a single path for the magnetic flux, ensuring equal flux linkage of parallel-connected secondary windings despite possible geometric PCB-layout asymmetries or reluctance imbalances. The so-called snake-core transformer avoids the emergence of circulating currents between parallel-connected secondary windings and guarantees proper operation of parallel-connected, magnetically-coupled converter modules. The benefits of the proposed topology, control scheme and transformer design are validated by three fabricated 300 V-430 V-input, 12 V-output DC/DC hardware demonstrators. The converters utilize an LLC-based control scheme for complete soft-switching and the snake-core transformer to divide the output current with a balanced flux among multiple secondary windings. First, a 3 kW DC/DC series-resonant converter achieves 350Win3 (21”4 kWdm3) vii Abstract power density and 94 % peak efficiency, validating control and transformer operation. Then, a second hardware prototype with 1”5 kW showcases a peak efficiency close to 96 % and a power density of 337Win3 (20”6 kWdm3), with full PCB-integration and zero-voltage switching even down to zero load. Finally, the third demonstrator—a magnetically-coupled, input-parallel/outputparallel, two-1”5 kW-module DC/DC converter—achieves a peak efficiency of nearly 97 % and a power density of 345Win3 (21”1 kWdm3) with ideal current sharing among modules and stable operation, important characteristics enabled by the novel snake-core transformer. Detailed loss models are derived for every converter’s component and the measurement results are in excellent agreement with the calculated values. These loss models are used to identify improvements to further boost efficiency, the most important of which is the minimization of delay times in synchronous rectification with either synchronous rectifier ICs embedded into the power-device’s package or, at a minimum, Kelvin-source connections on high-current MOSFETs. The results accomplished in this thesis indicate the necessity of careful topology/control selection and advanced-magnetics design for enabling WBGbased industrial power supplies that will outperform state-of-the-art solutions and catapult them to the next-generation performance standards. None of these features—be it WBG devices, wide-gain-range resonant converters, or advanced PCB-integrated magnetics—will alone enable next-generation power-supply modules, but the thoughtful combination of these technologies and their careful application to the particular application, with emphasis to high-frequency PCB magnetics and soft-switching topologies, which enable compact and cost-effective converters with competitive efficiencies.

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https://www.pes-publications.ee.ethz.ch/uploads/tx_ethpublications/DissKnabbenWeb.pdf