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Sustainability The goal is not just for Schleswig-Holstein to be Germany’s first climateneutral industrial state but also to provide thought leadership for the energy transition The second PowerNet conference organized by EKSH in February this year aligned 600 people from across politics administration economy science and municipalities to advance the energy transition in the region and with its neighbours in Denmark Always central to the discussion is the crucial role of power electronics in mobility and transportation grids heating and communication and digitalization E-Mobility sustainability on a system level The increased use of battery and hydrogenpowered vehicles from cars bikes trucks coaches and trains to boats ships planes and helicopters all rely on power electronics The projects supported by the EKSH range from electrolyzers and fuel cells for hydrogen energy to wider sustainability issues like battery control and reuse and efficient charging – such as a twoyear research initiative with a local industry partner on siliconcarbidebased charging stations led by PCIM Europe advisory board member Marco Liserre Power electronics to form an even more flexible grid Power electronics are also critical in enhancing the efficiency and intelligence of the power grid thus facilitating a more sustainable and efficient energy landscape This includes applications in smart transformers highvoltage shortcoupling devices control systems and energy storage solutions as well as managing the charging and discharging of large battery plants One research focus at the University of Kiel for example is on smart transformers The right solutions here could play a significant role in addressing the many extra transformer stations energy grids will need to accommodate increasing volumes of decentralized renewable sources Comprehensive data from transformers can enhance grid control to boost systemwide robustness Smart transformers can also reduce the amount of copper required by replacing it with semiconductors which are not as scarce a resource as copper is likely to become in the future Im ag e Birt he Ritz r es ea rc h en gi ne er a t t he Tea m Eis el e of Kie l Uni ve rs ity o f App lie d Sc ie nc es The German state of Schleswig-Holstein produces around twice as much renewable energy from onand offshore wind solar and biogas as it can use itself This gives it a strong interest in driving a sustainability agenda an agenda that is at the core of the work of the Society for Energy and Climate Protection Schleswig-Holstein EKSH a funding organization with stakeholders spanning the state its universities and the regional energy distribution grid operator This helps it support education and research enable transfers to industry and other stakeholders promote the availability of renewable electric energy to attract industry and guide and back energy transition projects from policy to the community Sustainability and Power Electronics Prof Dr -Ing Frank Osterwald Managing Director of the Society for Energy and Climate Protection Schleswig-Holstein GmbH Kiel Germany and member of the PCIM Europe Board of Directors On the left is the front and rear view of an inverter power amplifier developed in intensive research at the FH-Kiel Three of these can drive an 150 kW electric motor efficiently getting more life and range from the battery The rear shows the hydraulically optimized cooling channels which together with the lowtemperature silver sintering technology provide cooling performance for efficient operation of the controlling semiconductors The motor control system on the right also developed at the FH Kiel uses a complex stacked integration using energysaving organic copperoncopper laminates also known as the Kiel-PowerPlate with the control board located in the second plane This provides lowloss control for aircooled industrial emotors up to 20kW 12 PCIM Magazine 01 2024