Chair of Power Electronics

Unbreakable HEART: a reconfigurable and self-healing isolated dc/dc converter

The chair of power electronics of Prof. Marco Liserre was awarded with the prestigious “ERC Proof of Concept Grant” (150.000 €) for the U-Heart (Unbreakable-Highly Efficient and Reliable Transformer) project. Aim of the project is to investigate and equip the already robust dc/dc converter of the HEART project with additional fault tolerant as well as self-healing features. In contrast to competing approaches, U-HEART will utilize the flux coupling of a multi-winding transformer to avoid the expensive use of redundancies, which makes our approach more appealing for industry partners. [read more]


An integral part of U-HEART is to explore market opportunities and license out the intellectual property patented. During this process the PE team around Prof. Liserre will be supported by the WTSH Kiel, in particular Joachim Bergmann, with patent studies and markets surveys.

The Project money will be used to employ a full-time doctoral researcher to construct a fault tolerant U-HEART prototype. Other costs include patenting fees and travel expenses for product presentations at Hannover Messe etc.



Title Unbreakable - Highly Efficient and Reliable Transformer (U-HEAR)
Coordinator Prof. Marco Liserre
Contact Person M. Sc. Jan-Ludwig Lafrenz (
Type ERC Proof of Concept Grant
Funding 150.000 Euro
Partners WTSH Kiel
Duration 01.01-2019 - 31.07.2020
Keywords Fault Tolerant, Self-Healing, Reliable Smart Transformer , Reliability, DC/DC Converter

  • 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