Power Electronics for Electric Flying on the path to All Electric Aircraft

Date: 15/05/2025
Time: 10:00 am
Presenter: Regine Malwitz
Abstract: Electrifying aircraft can help to reduce environmentally harmful emissions and thus contribute to more sustainable mobility. Electric propulsion has already been demonstrated in smaller aircraft such as the battery-driven Heart Aerospace ES-19 for 19 passengers, equipped with 400kW electrical machines. The electrification of auxiliary equipment such as the Wing Ice Protection System or the Environmental Control System was initially introduced for larger aircraft in the short- to long-haul sector. These cannot do without power electronics either. In total, up to 1MW of power is installed in a so-called More Electric Aircraft working on a +/- 270V DC power supply system. Examples are the Boeing 787-8 and the Airbus A380 with 550 seats. Work is currently underway on solutions for the electrification of propulsors. Electric drives are required for larger aircraft with a total propulsion power of approx. 8 to 44 MW. For this, one approach is to increase the on-board power supply voltage up to the kV range.

Another approach is based on the use of superconductors and thus cryogenically operated components in the drivetrain. However, in addition to the question of energy supply, the aviation-specific requirements also represent a major challenge for power electronics. The flight altitudes and the associated changes in cosmic radiation or air pressure, in temperature or humidity changes and the need for extremely high gravimetric power density differ from terrestrial requirements in a new way.

The webinar provides insights into supply concepts and solutions for power electronics on the way to the All Electric Aircraft.
Regine Malwitz
Prof. Dr.-Ing. Regine Mallwitz studied electrical engineering and received the diploma degree at the Otto-von-Guericke-University Magdeburg, Germany, in 1994. After working on pulse power supplies for gas and solid-state lasers at LAMBDA PHYSIK (today: Coherent) Goettingen and LISA Laser Products Lindau in Germany she received the PhD degree in 1999 at the University of Kassel, Germany. 1999 she entered the company eupec in Warstein (today: Infineon Technologies) as R&D engineer and was responsible for the development of 1700V IGBT module family and strategic R&D until 2004. From 2005 to 2013 she held leading positions in the PV inverter R&D department at SMA Solar Technology, Germany.

In 2013, Regine was appointed full professor for Renewable Energies and Electromobility at University of Applied Sciences Fulda, Germany, and returned to academic research and teaching. Since 2014 she is full professor of Power Electronics at Technische Universität Carolo-Wilhemina Braunschweig, Germany, with a strong research focus on mobility (vehicle, aviation). She has been elected as the chairwoman of the power electronics departments in the German Association of Electrical, Electronics & Information Technologies (VDE). Inside the VDE she is scientific board member of the Power Engineering Society (VDE-ETG). Her special scientific interests are the application of extreme fast switching power semiconductors and the system reliability under harsh conditions like in aircraft. She has been researching the electrification of aircraft for several years. Regine is principle investigator and board member of the Cluster of Excellence SE2A–Sustainable and Energy Efficient Aviation in Braunschweig-Hannover.