Periodic Reporting for period 1 - ASSTRA (Advanced Solid State Transformers)
Reporting period: 2018-01-01 to 2019-12-31
The research on the medium frequency transformers (MFT) for SSTs (grid applications) is going on. The application of the MFTs would reduce dramatically the sizes of the transformers due to the rise of the operating frequency, and respectively the use of active materials like copper, ferrites and insulation materials. The technical challenge is to focus on the new design principles of the insulation materials, that would be able to deal with the DC excitation and confront the high level of stress generated by both electrical and thermal domain. The choice of the design method is a fundamental objective to define and predict the MFT performance. Specifically, facing the fast switching frequency of the emerging wideband gap switches. The consequences of newly developed switches play the crucial role of the life-time and fault-tolerance of the MFT."