Opening Oktober 14, 2013, 09:00-09:05

Prof. Norbert Grass

Nuremberg Institute of Technology Georg-Simon-Ohm


Degree of Diplom Ingenieur (Diploma Engineer) in 1988 at the Friedrich Alexander University in Erlangen, Germany.

With the development of a Fuzzy logic controlled high frequency power supply for Electrostatic precipitators received the degree of Dr.-Engineer (Ph.D) in 1997 from the Friedrich Alexander University in Erlangen.

From 1988 until 2004 he was working at the Siemens power electronic laboratories and in the department of electrostatic precipitator business as a Chief Engineer. Main area of work was the research and development of switched mode power supplies and control for industrial electrostatic precipitators.

Since October 2004 he is a professor at the Ohm University () in Nuernberg, Germany in the field of power electronics and control.

In 2006 he started the institute for power electronic systems ELSYS which is funded by industrial orders and research projects. Currently 20 researchers / engineers employed.

In 2010 he started his company Grass Power Electronics GmbH, producing industrial qualified power electronics systems and smart grid power systems.

Opening and Keynote Oktober 14, 2013, 09:05-09:45

Correlations between telecommunications and energy 

Dr. Bruno Jacobfeuerborn
Director of Technology Telekom Deutschland GmbH and Chief Technology Officer (CTO) of Deutsche Telekom AG.

Bruno Jacobfeuerborn has been Director of Technology at Telekom Deutschland GmbH since April 2010. In addition, he is Chief Technology Officer (CTO) of Deutsche Telekom AG within the Europe Board area, a position he has been holding since February 2012.
Since July 1, 2009 Bruno Jacobfeuerborn has been responsible for Technology (both mobile and fixed network) in Germany. He joined what is today Deutsche Telekom AG in 1989. Two years later he became head of department for radio network planning in Hanover and, at the same time, regional head of T-Mobile in Leipzig. In this role, he also managed the planning and development of the mobile communications network in the German regional states of Saxony, Saxony-Anhalt and Thuringia. From 1995 to 1999, he was responsible for the Technology division of the T-Mobile Northern District in Hanover and took on additional responsibility for Sales and Marketing as head of the T-Mobile Northern District in Hanover from 1999 to 2002.
From 2002 to 2007, Bruno Jacobfeuerborn was a member of the management team in his capacity as Managing Director of Technology, IT, Procurement and, until 2004, Customer Service at T-Mobile Netherlands in The Hague. At the same time, he headed the International Service Management unit at T-Mobile International. Subsequently, he was a member of the management team and Managing Director of Technology, IT and Procurement at Polska Telefonia Cyfrowa in Warsaw until June 30, 2009.
Bruno Jacobfeuerborn is Deputy President at VDE, the Association for Electrical, Electronic & Information Technologies, as well as Board Member at ITG, the Information Technology Society.

Keynote Oktober 14, 2013, 09:45-10:15

Future of Business Solutions: Cloud Computing

Dietmar Meding

Vice President, SAP Cloud Solutions EMEA & MEE SAP Deutschland AG & Co. KG


What is “Cloud Computing” or “Software-as-a-Service”? A new trend or just industry hype? Is it sustainable, and what is so new and appealing about it? These questions and others will be answered by Dietmar Meding, Vice President for Cloud Solutions at SAP. He will explain why cloud technology is the next step for businesses, what it means in terms of data security concerns and will demonstrate how cloud solutions are already being used today.

Biography Dietmar Meding joined SAP in 2008 and starting in 2012 lead the SAP Cloud Solutions business as Vice President for EMEA & MEE (Europe, Middle East, Africa & Middle- Eastern Europe). He recently joined the Reply living network as Managing Partner and is in charge of all SAP Cloud activities and businesses there.
Before joining SAP, Meding worked at Parametric Technology Corporation in Germany. He began his career at CONNEXT Communication GmbH, developing and marketing health services software. He has also worked as managing director of CONSUL Risk Management GmbH and as Vice President of Sales & Marketing at Parsytec AG. Over the years, Meding has achieved more than fifteen years of sales and sales management experience. Meding has a degree in Physics from the University of Paderborn.


Keynote Oktober 14, 2013, 10:15-10:45


The German Energiewende needs energy storages for supply security

Univ.-Prof. Dr.-Ing. Hans-Peter Beck
Institute of Electrical Power Engineering, Clausthal-Zellerfeld (Executive Director)

Energy Research Center Lower Saxony, Goslar (Chairman)
Technical University of Clausthal


The aim of the German Energiewende until 2032 is the replacement of 50 % fossil and nuclear power plants by wind, biomass and photovoltaic plants with a double amount of rated power. Due to the weather and light cycles the generated power will be sometimes much more higher as the consumption and often also below it. For balancing the electricity flow storages for power and energy as well as back up powerplant-capacity is without doubt necessary. In the presentation calculations will be shown how the problem can be solved in particular the question will be answerd in which way with which solutions the needed supply security for the industry and society in whole Germany can be guaranted.


Hans-Peter Beck (Ph. D.) was born in Wolfsburg (Lower Saxony), Germany on November 27, 1947. He graduated from the German Polytechnic, Braunschweig/Wolfenbüttel and studied at the Technical University of Berlin. His employment experience included the research centre for converter and drive technology of the German General Electric Company in Berlin and Westinghouse Cop., Pittsburgh for seven years. During this time he also created his doctor thesis concerning high-power inverter-drives. For the next seven years he was as a research and development director responsible for the construction of the system technology for rail vehicles especially for the "ICE High Speed Train". In 1989 he received the degree of an University-Professor for electrical energy and became director of the Institute of Electrical Power Engineering of the Technical University of Clausthal/Germany. His research work until now concerns inverter-drives for wind energy converter with intelligent controllers, regenerative sources of energy and their connection to the grid, energy storages like batteries and energy management-systems for this.

Since April 1995 until 1998 he was dean of the faculty of mechanical- and process-engineering and from 1999 until 2009 vice-president for research of his university. He is member of the Board of the country energy storages and -systems initiative, a member of the Scientific Academy of Germany (acatech) and the International Scientific Committee for Electrical Power Quality and Utilisation. Since 2007 he worked also for the Energy Research Center Lower Saxony in Goslar/Germany as its Managing Director and scientific Stakeholder for electric-energysystem-technology. 


Invited Oktober 14, 2013, 11:15-11:45

Lithium-ion vs. lead-acid batteries and double use of UPS batteries

Prof. Dr. rer.nat. Dirk Uwe Sauer
Institute for Power Electronics and Electrical Drives (ISEA) and Institute for Power Generation and Storage Systems (PGS) at E.ON Energy Research Center at RWTH Aachen University

Biography Prof. Dr. Dirk Uwe Sauer studied physics at University of Darmstadt and startet his scientific career with the diploma thesis at the Fraunhofer Institute for Solar Energy Systems ISE in Freiburg in the year 1992. As scientist and from 2000 onwards as head of two groups he worked on energy storage systems, decentralised power generators and storage systems in grids, and on off-grid power supply systems ranging from few W to MW systems. He published a PhD thesis on lead-acid batteries and on the optimum design and management of off-grid power supply systems at University of Ulm under the guidance of Prof. Garche
In 2003 Dr. Sauer joint RWTH Aachen University as a Juniorprofessor for "Electrochemical Energy Conversion and Storage Systems“ and in 2009 res. 2012 he became a full professor and a chair on the same topic still at RWTH Aachen University in the faculty for Electrical Engineering and Information Technology. His team has currently about 60 full time scientists, engineers and technicians and additionally about 80 students working on their bachelor and master thesis or as student assistance. The main topics are all aspects on battery storage systems for mobile and stationary applications.
Prof. Sauer provides advice to the national government e.g. as a member of the national platform electro mobility and as a member of the scientific academy project “Energy systems for the future” as part of the dialog platform “Forschungsforum Energiewende“. In addition, Prof. Sauer is a member of the scientific board of VGB Powertec (association of power plant operators), deputy speaker of the Jülich-Aachen Research Alliance (JARA) for the section energy, and he is the scientific chair of the International Renewable Energy Storage Conference (IRES) since 2006 and (together with Prof. Winter) of the conference “Advanced Battery Technologies for Automobiles and Their Electric Power Grid Integration” since 2009.


Invited Oktober 14, 2013, 11:45-12:05

Grid Integration of Renewable Energies in Germany -
with a Special Focus on the Hot-Spot in North Eastern Gemany

Prof. Dr.-Ing Harald Schwarz
Managing Director CEBra-Center for Energy Technology Brandenburg
BTU Cottbus-Senftenberg


Since German "Energiewende" startet approx. 15 years ago more than
30.000 MW of wind power and another 30.000 MW photovoltaic installitions were connected to the grid. This renewable, but highly fluctuating generation has to be combined with the still existing gas or caol fired or nuclear generation of another 100.000 MW to supply the german load in the range between 35.000 - 75.000 MW. Because most of the renewable generation was built in areas with low load density, high overproduction may occur in some areas of Germany, especially in the north-eastern part. There the share of renewable generation in comparison with the regional demand is meanwhile up to 70-80% (German average is 25%) and will reach 100 % within the next 3-5 years. This situation will lead to partly overloading of the available grid structure and force the grid control center to stabilize the system at more than 200 days per year by redispatching of conventional power plants or tripping of renewable infeed from the grid. The gradients of the highly fluctuating renewable infeed reached meanwhile 1000 MW/15 min. In strong wind situations the north-east of Germany is fully supplied by renewables. All conventional generation will be reduced to technical minimum output. Nevertheless the unneed surplus of energy will values up to 200 - 300 GWh, 10-15 times more than the available storage capacity.

Biography Prof. Dr.-Ing Harald SCHWARZ (55) graduated as Master of Science in Electrical Engineering from Berlin University of Technology in 1982 and got his PhD degree in Electrical Engineering from University of Dortmund in 1986. In the following years from 1987 till 1995 he worked with ASEA BROWN BOVERI (ABB) in large power transformers and high voltage switchgears before he joined Brandenburg University of Technology (BTU) in Cottbus as full professor in Energy Distribution and High Voltage Engineering. In 1999 he commissioned one of the largest high voltage test fields at German universities. From 2002 – 2004 he was Vice Dean of Faculty for Mechanical, Electrical und Industrial Engineering and since 2004 up to now he is Managing Director of CEBra – Center for Energytechnology Brandenburg at BTU Cottbus, a central scientific research center under direct responsibility of the university president. More details can be taken from He is also director of the international, English taught MSc programme Power Engineering, which is linked to more than 15 excellent universities throughout the world and offers dual degrees e.g. with universities in Shanghai, Taiwan, St. Petersburg and Poland.




Invited Oktober 14, 2013, 12:05-12:35

Power Electronics – the key enabling technology for future electrical grids


Prof. Rik W. De Doncker
RWTH Aachen University


Awareness of global climate change due to the high consumption of fossil fuels and the expectation of cost increases of primary energy sources in the coming decades has stimulated worldwide research and innovation towards a CO2-free energy environment. To realize this “Energiewende”, i.e. energy transformation, research, development and innovation is required both on the energy supply and the consumption side, as well as on flexible grids and storage systems.

The speaker focuses on key enabling technologies that are pursued in research programs to prepare the electrical supply system and the grid for an increased use of more decentralized and more volatile power sources at all voltage levels, i.e. high voltage transmission, medium- and low-voltage distribution level. As research is not only focused on electrical grids and electrochemical storage systems, but also on low- and high-temperature heat and gas storage systems for medium- and long-term storage capacities, efficient energy conversion systems are required. Such storage systems can already be found as “dual use” storages in buildings, heating, ventilation and air-conditioning systems, in demand side energy management systems for buildings and homes, in the electrification of transportation, most notably in electric vehicles. In all these areas, power electronic energy conversion systems will be used. For such scenario, the speaker will high-light the advantages of DC technology to help future grids to become more efficient, flexible and cost effective.

Biography Rik W. De Doncker (M'87 SM'99 F'01) received his Ph.D. degree (summa cum laude) in electrical engineering from the Katholieke Universiteit Leuven, Leuven, Belgium in 1986.
In 1987, he was appointed a Visiting Associate Professor at the University of Wisconsin, Madison, where he lectured and conducted research on high-performance induction motor drives and soft-switching converters. During his stay at UW, he invented the dual active bridge DC-to-DC converter for the NASA space station, which resulted in a WARF patent.
In 1988, he was a General Electric Company Fellow in the microelectronic center, IMEC, Leuven, Belgium. He joined the General Electric Company Corporate Research and Development Center, Schenectady, NY, in the same year. He led research on drives and high-power soft-switching converters, ranging from 100 kW to 4 MW, for aerospace, industrial, and traction applications.
In November 1994, he joined Silicon Power Corporation (formerly GE-SPCO) as Vice President, Technology. He worked on high-power converter systems and MTO devices and was responsible for the development of world’s first 15-kV medium-voltage thyristor based transfer switch.
Since October 1996, he has been a professor at Aachen University of Technology, Aachen, Germany, where he leads the Institute for Power Electronics and Electrical Drives. In Oct. 2006 he was appointed director of the E.ON Energy Research Center at RWTH Aachen University, where he also leads the Institute for Power Generation and Storage Systems.
He has published over 250 technical papers and is holder of more than 40 patents, with several pending. Currently, Dr. De Doncker is member of the Board of the German engineering Society VDE-ETG. He is an IEEE Fellow and is currently past president of the IEEE Power Electronics Society (PELS). He is member of the EPE Executive Council. He was founding Chairman of the German IEEE IAS-PELS Joint Chapter. Dr. De Doncker is recipient of the IAS Outstanding Achievements Award and the IEEE Power Engineering Nari Hingorani Custom Power Award (2008). In 2009, he led a VDE/ETG Task Force on Electric Vehicles. In 2010, he became member of the German National Platform for Electromobility. He is the recipient of the 2013 Newell Power Electronics IEEE Technical Field Award, the highest distinction in this field within IEEE.



Keynote Oktober 15, 2013, 08:30-09:00


The Evolution of Telecom Power Systems

Dipl. Ing. Gunter Schmitt
ELTEK Deutschland GmbH, Frankfurt, Germany                                                    


Modern Telecom power supply systems are very advanced high tech products. They combine high efficient power electronics packed into clever mechanical designs. High performance monitoring and control technologies allow the application of remote monitoring and the integration into smart grid solutions.

The development of Telecom Power Systems in the last decades from very simple and inefficient technologies to very well developed high tech products reminds us today to the principle of Charles Darwin. The evolution of Telecom Power Supplies is very similar to a natural scenario with the survival of the fittest. Telecom Power always had to follow the principles of latest technology, competitive performance and a good price-performance-ratio. Products and manufacturers that were not able to compete on the market disappeared and were replaced by more modern, higher perform-ance and lower cost products.

Main drivers for all developments were always the request to optimize invest cost (CAPEX) and operational cost (OPEX) on Power Systems that were more and more optimized to the application. Drastic changes and developments in the transmission technologies caused different structures and power demand.  Fixed net solutions differ from BTS power and broadband DSLAM power.

The paper shows the background and main developments of characteristics, technologies and pa-rameters of Telecom Power Supply Systems during the last decades and shows perspectives for the future.

Biography Gunter Schmitt is member of the senior management of this year’s Platin sponsor Eltek Germany. The company is located in Frankfurt and is a subsidiary of the international ELTEK group.
Mr. Schmitt was born in 1965, he is married and has two children. After school and military service he studied in Offenburg and finished his education as Graduate Engineer for Communications Elec-tronics in 1990.
He started his career as R&D engineer in Continental Teves, where he developed ABS and traction control systems for cars.
Mr. Schmitt is in the Telecom Power business since 1991, when  he started to work as an R&D engineer in Voigt and Haeffner, which nowadays is better known as Eltek Germany. In 1997 he became department head for R&D for switched mode power supplies and their remote monitoring systems. From 2002 until today he worked as CTO and later as COO of Eltek Germany with responsibilities for R&D, system design, production, procurement, planning and logistics.
Mr. Schmitt presented papers on Intelec 2005 in Berlin, 2007 in Rome and in 2009 on Telescon in Vienna and some more other conferences.


Invited Oktober 15, 2013, 09:00-09:30

Lithium-Ion as a Basis for Energy Storage at Home or at a Central

Sven Bauer, BMZ GmbH, Karlstein am Main • Germany

Biography Sven Bauer, managing director of the BMZ GmbH is a passionate battery expert who is concentrating on battery and charger technologies for over 19 years.
With the establishment of the BMZ Batterien-Montage-Zentrum GmbH in Karlstein he has made his hobby to his profession. The company has progressed with very big success quickly into one of the leading system suppliers of the battery branch in Europe. BMZ develops battery systems with housing, charging technology, communication and supplies this world-wide "just-in-time" with guarantee and desired registration.
Since a few years, Sven Bauer gives interesting lectures on the subject battery technologies at BMZ battery forums and developer forums of the power supply branch in Germany and Europe. In 2006 he successfully started to train BMZ customers in accumulator and charging techniques. He also gave lessons at the University of Applied Sciences in Aschaffenburg to the topic “Modern Accumulators”
In the beginning of 2008 he has realized a new idea with the establishment of the GmbH. has set itself the task of supporting designers and users of batteries and accumulators with broad professional information and individual services for their daily business. The main focus is on UN test procedures for lithium batteries in an own laboratory and the organization of forums and training events. Further key points of are scientific analyses, consulting, product design, expert advice, as well as the provision of different test equipment and processes for battery manufacturers and users.
Abstract There are the most various lithium ion systems. The question is: which cathode and anode are the right ones for the respective area. With the individual advantages and disadvantages, Bauer explains how the storage battery withstands a high rate of micro cycles and reaches a lifespan of twelve years and more with a certain remaining capacity. Examples and calculations show how the lifespan can be influenced actively and that a lifespan of 20 years and more is possible.
Even more exciting is the topic “second life”: together with the BMWI (Federal Ministry of Economics and Technology), BMZ develops an ASIC which ensures that batteries which have been withdrawn from automotive applications can be implemented in an energy storage system.
The final topic is on costs - concerning the trend of the individual lithium-ion systems and the accumulation of costs for the entire package. What are the prices today and what will they be tomorrow?



Invited Oktober 16, 2013, 08:30-09:00


SMARTer 2020 -  ICT Driving a Sustainable Future


Luis Neves
Group Climate Change and Sustainability, Deutsche Telekom AG
CEO of the Global e-Sustainability Initiative

Biography Luis Neves was born in Covilhã, Portugal in 1953. He finished his University degree in History. Luis worked for more than 25 years for Marconi (today Portugal Telecom) as Head of Department and lately at the Corporate Office. After leaving Marconi he started an international career and developed an intensive activity at European and International levels which lasted 14 years. During this period he participated in different international bodies. He was a permanent member of the Joint Committee on Telecommunications in the European Union and "Chair" of diverse Work groups, member of the High Level Group on the Information Society. Luis joined Deutsche Telekom in May 2004 as a Senior Manager in the Corporate Sustainability and Citizenship Department. In May 2008 he was appointed Head of Sustainable Development and Environment at Deutsche Telekom Corporate Responsibility and as from December 1st 2008 he was leading the CR Department as Vice President Corporate Responsibility. He has been appointed effective February 2012 Group Climate Change and Sustainability Officer. Luis has been playing a fundamental role in promoting the role of ICT in relation to Climate Change. Luis was the driving force and the chairman of the steering committee of the recent Study “SMART 2020 - Enabling the Low Carbon Economy in the Information Age” and more recently of the “SMARTer2020- The Role of ICT in Driving a Sustainable Future”. Luis represents Deutsche Telekom in Organisations such as The UN Global Compact, caring for Climate Initiative, Econsense, 2 Grad Stiftung or BDI. He has been the Chairman of GeSI since 2006.
Abstract Since the beginning of the Industrial Revolution, human activity has driven annual greenhouse gas emissions higher by nearly 30,000 percent.  The main force behind this increase is the burning of fossil fuels, such as coal and oil, to produce electricity, fuel our vehicles, and heat our homes.  In 1750, CO2 emissions were 11 megatons and had reached 4,200 megatons by the end of World War II.  Unprecedented economic prosperity in the wake of the World Wars had pushed CO2 emissions to 22,500 megatons by 1990.  Over the past two decades, accelerated economic growth in developing countries and limited emissions abatement in developed economies pushed CO2 emissions to nearly 32,000 megatons by 2009.  Though it's widely known that greenhouse gas emissions lead to dramatic and widespread temperature changes around the globe, there are other destabilizing effects that could prove devastating for Earth's climate.  Weather patterns are changing, leading to extreme weather events such as tornadoes and droughts.  Higher temperatures in polar regions are causing the melting of ice sheets while causing the death of rainforests in the tropics.  CO2 absorbed by the oceans is leading to their acidification, threatening marine life and destroying coral reefs.  All these changes are threatening animal species around the globe with extinction and the extinction rate is two to three orders of magnitude higher than typical rate.  There is arguably no greater threat posed to the globe in this century than that of climate change.  While rising to the challenge seems daunting, addressing climate change while maintaining sustainable economic growth is possible; information and communications technology, or ICT, provides such an opportunity.  In the Global e-Sustainability Initiative's (or GeSI's) SMARTer 2020 report, six economic end-use sectors have been identified where ICT can be used to abate GHGs. 



Invited Oktober 16, 2013, 09:00-09:30

“Energy, IT and Telecommunications: interface, overlap, convergence, merger?”

Friedrich Wolf
Head of Business Development
E.ON Connecting Energies GmbH


Friedrich Wolf, born 1952, studied in Bochum, Constance and Munich.
He holds university degrees in Mathematics, Economics and Electrical Engineering.
He worked in the IT industry and joined E.ON Ruhrgas AG in Essen in 1982.
After various responsibilities in operations and controlling he acted from 1996 to 2007 as founder and managing director of GasLINE GmbH & Co. KG, a market-leading telecommunications infrastructure company, co-owned by major gas companies in Germany.
Since 2007, he has been managing director of the newly founded E.ON Bioerdgas GmbH, Essen, the bio-methane arm of the E.ON group.
In 2012 Friedrich Wolf joined the newly started E.ON Connecting Energies GmbH as Head of Business Development & Strategy.

Abstract Much has been speculated about parallels and similarities between the world of energy industry and consumption and the world of IT and telecommunication. While parallels must not be overstated, IT and telecommunication will play a dominant role in the paradigmatic change of the energy world that is globally under way. The growing role of the use of renewable energy and the trend towards power generation on the site of consumption lead to an entirely new view on the role of energy grids. But the major impact will come from tapping the enormous potential of energy efficiency. Studies estimate the potential of energy currently wasted and therefore potentially saved at $700bn per year. Accessing these savings without significantly reducing comfort and security of energy supply will rely on IT systems and modern instruments of transmitting onsite data and commands. Case studies show that successful energy savings are reached by such instruments which often exceed the savings harvested from hardware replacements and refurbishments. Reducing building energy consumption by modern IT systems and remote monitoring and control system exceeds in many cases the potential of insulation and building fabric improvements not only relatively in terms of cost efficiency, but also in absolute terms.
Energy, IT and telecommunications will, of course, neither converge nor merge. But the potential of a closer interlink of these three fields is still not fully present in the common perception. This cooperation will create a highly effective market which will drive behavioural change with energy consumers without loss in comfort.



Invited Oktober 17, 2013, 08:30-09:00

Network Energy Transformation: Efficient, Synergic and Intelligent

Dr. Fang Liangzhou
Vice President of Network Energy Business Unit, Head of Solution & Marketing, Huawei Technologies Co., Ltd 

Biography Dr. Fang joined Huawei in 1999, in the past 14 years, he has undertaken several leadership roles, including Director of South Africa PL-Marketing Department, Vice Director of South Africa Marketing Department, Director of South Africa MTN Marketing Department, as well as Vice President of Huawei Network Energy Business Unit.
Dr. Fang holds a doctorate of Mechanical and Electronic Engineering in Northeastern University, China in 1999.

Challenges of network carriers:
Driven by increasing digitization level of people’s lives, the network data traffics are increasing dramatically, and the exponential rise in network energy consumption has become one of the most important and significant challenges for the carriers. Network energy is beyond power, and faces a comprehensive and changing environment. Network energy needs a transform to match up the network evolution.

Trend of network energy:
A sustainable, flexible and efficient power network is the key to underpin the availability of the future network and the services to customers. How to effectively manage the network availability and the operation cost by leveraging new technologies? If we understand the evolution of the network and the impact on network energy, we’ll clearly find out the direction of network energy transformation. High integration, miniaturization, modernization and networking to simplify management are the trends of network energy.

Network energy strategy and solution:
Under the umbrella of Huawei network pipeline strategy, Huawei network energy strategy aims to build high efficient, reliable, green energy solutions for carriers and enterprises, these solutions build the foundation of high availability, cost effective and the continuous evolution network. By leveraging new technologies and solution innovations, some new transformations on network power solution have been introduced. Such as transforming telecom power into compact site solution; changing the power into network element make the power and energy manageable; methodologies to balance between reliability and cost for optimizing the cost and reliability model of network power; etc.


Invited Oktober 17, 2013, 09:00-09:30

Low Voltage DC Grids

Prof. Dr. Eberhard Waffenschmidt

Cologne University of Applied Science
Institute for Electrical Energy Technology

Biography Eberhard Waffenschmidt studied electronic engineering at the Technical University (RWTH) in Aachen, where he received his PhD degree. Between 1995 and 2011 he was employed at Philips Research, finally as senior scientist. Since Sept. 2011 he is Professor for electrical power grids at the Cologne University of Applied Science. He is still connected to Philips Research as a consultant. He is Senior member of the IEEE and active member of the Society to Promote Solar Energy of Germany (SFV). His actual interest are the demand  on a power grid with high content of decentralized renewable generation of energy and the use of DC for the supply in homes and offices.

Most electrical devices operate on direct current (DC) internally, but are supplied by alternating current (AC). A power supply with DC makes the rectifier electronics unnecessary, which makes the devices simpler and more reliable and generates less power losses.
This publication aims to show solutions of DC operated professional buildings like offices or supermarkets and homes. A realized office test bed including DC light emitting diode (LED) illumination and photovoltaic (PV) support is presented as well as a detailed concept for a DC operated home. Based on these reference cases, the specifications of the components for those applications are derived and the saving potentials in material and power losses for different use cases are illustrated.


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In cooperation with
Platinum Sponsor
ELTEK Deutschland GmbH
Gold Sponsor
Silver Sponsor
NorthStar Site Tel
Enersys EH Europe GmbH
Würth Elektronik eiSos GmbH & Co. KG
Power Innovation
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