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
segunda-feira, 10 de outubro de 2022
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!
VIEW FULL THESIS:
quarta-feira, 5 de outubro de 2022
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
sábado, 17 de setembro de 2022
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
quarta-feira, 7 de setembro de 2022
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:
quarta-feira, 24 de agosto de 2022
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
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 350Win3 (214 kWdm3)
vii
Abstract
power density and 94 % peak efficiency, validating control and transformer
operation. Then, a second hardware prototype with 15 kW showcases a peak
efficiency close to 96 % and a power density of 337Win3 (206 kWdm3), with
full PCB-integration and zero-voltage switching even down to zero load. Finally,
the third demonstrator—a magnetically-coupled, input-parallel/outputparallel,
two-15 kW-module DC/DC converter—achieves a peak efficiency
of nearly 97 % and a power density of 345Win3 (211 kWdm3) 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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