European Commission logo
English English
CORDIS - EU research results

Reliable Aircraft electrical Insulation System sElection

Project description

For flights with zero compromises

The concept of ‘more electric aircraft design’ is a challenging innovation in aerospace today. It aims to replace hydraulic/mechanical actuators with electric drives, offering improved efficiency and power density and reduced weight, fuel consumption, and emissions. However, higher voltage gradients in certain components can adversely impact performance, while the reliability of the high voltage insulation system may also pose issues. The EU-funded RAISE project will investigate and assess the partial discharge and breakdown behaviour of electric insulation in electrical machine windings. This research will focus on windings driven by wide bandgap-based converters (gallium nitride and silicon carbide) with extremely short switching times. The project’s goal is to enhance the reliability of electrical machines and drives without compromising overall performance and efficiency.


In the last years, the need for high power density and efficiency has become a central concern in all industrial sectors. For this reason, the arrival on the market of new power devices based on wide bandgap (SiC and GaN) semiconductors, with extremely short switching times, has raised a relevant interest.
Aerospace industry is one of the main areas which can take advantage from these devices. According to the MEA concept, replacing the aircraft’s hydraulic/mechanical actuators with electrical drives yields an improvement in efficiency and power density, which means a reduction in weight, fuel consumption and noise/pollutants emission. However, some reliability issues may arise in this type of electric drives, as devices with higher voltage gradients have a negative impact on the performace of high voltage insulation systems.
As such, there is a need to assess if state-of-the-art insulation materials of machines and power electronic components are suitable for future applications using higher supply voltages and higher switching gradients. The proposed project comprehends the analysis and the experimental assessment of state-of-the-art insulation materials and systems used in aircraft applications.


Net EU contribution
€ 196 572,59
41121 Modena

See on map

Nord-Est Emilia-Romagna Modena
Activity type
Higher or Secondary Education Establishments
Total cost
€ 196 572,59

Participants (2)