Chair of Power Electronics

Fault Tolerant Modular Power converter topologies for Smart Transformer

This project aims at the realization of a solid state smart transformer with very high reliability requirements. In particular, the main aspect of this project will be to investigate the architectures of modular power converters, with particular care to the reliability of the system. In the first stage, a comprehensive review of the state of the art regarding solid state transformers will be realized. [read more] The applications of novel concepts regarding the reliability study will be a core of the project at issue and special attention will be given to the physical mechanisms that cause the failure. As a modular design will be considered, special care will be taken for the choice of the converter’s basic cell. The reliability of the system will be addressed from multiple directions. The first will be to ensure that each cell features fault detection system. It will be considered during the project if the basic cell will be equipped with additional hardware to guarantee fault-tolerant operation or if the cell will be disconnected from the system and additional stand-by/online cells will share the power. At system level the health parameters of the converter will be monitored constantly, and particular strategies will be studied and implemented. 

Title Fault Tolerant Modular Power converter topologies for Smart Transformer
Coordinator Prof. Marco Liserre
Contact Person Dr.-Ing. Giampaolo Buticchi (
Type Humboldt Research Fellowship for Postdoctoral Researchers, Alexander von Humboldt Foundation
Duration 01.10.2014-30.09.2015
Keywords Smart Transformer, Efficiency, Reliability, Modular architectures, Multilevel Converters

  • Our research is focused on the design of high efficient and reliable PWM-based power converter architectures (single-cell, multi-cell, multilevel), their modelling and control to exploit commercial as well as new power semiconductor devices with minimum over design.
    We develop controllers for electric drives and we are particularly skilled in the integration of renewable energy systems into the electric grid.
    Please discover our expertise looking to our recent projects.

    HEART - The Highly Efficient And Reliable smart Transformer
    Further Research Projects