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Description
Electrification of the transportation sector will play a key role in the decarbonisation of the environment, and the envisaged expansion of the EVs fleet in several European countries necessitate the
installation of advanced charging infrastructure. In particular, the high number of fast charging stations is expected to provide flexibility to EVs, but this will be challenging to the existing power system. Therefore, the MoReSiC project aims at developing modularized and reconfigurable Silicon Carbide (SiC) power electronics systems exhibiting high-efficiency and integrated via a three-wire
DC link. The chargers will be able to adapt the conditions of current and voltage to meet the requirements for various types of EVs by reconfiguring the interconnections of the existing power converter modules. Additionally, the available grid power may be temporarily exceeded during fast charging due to the battery-storage connected to the three-wire DC link and, moreover, the system will be still in-service during grid faults. Finally, the storage and all connected EVs may also provide grid support as all power converters will be fully bidirectional. To reduce system cost and
complexity all necessary power converters (AC-DC, isolated DC-DCs and non-isolated DC-DC for the battery storage) will be developed based on the same submodule designed to take full advantage
of SiC technology. The MoReSiC project will be implemented by close co-operation of two research groups from leading technical universities and professionals from Markel – one of power electronics enterprises in Poland. Thirteen researchers will contribute to the project, with their majority to be young researchers with great opportunities to gain new competences and to further develop careers. Exchange of experiences, competence complementarities and significant support during all six planned work-packages will enhance the existing co-operation and make solid fundaments for securing
future projects grants.
Summary of project results
The MoReSiC project aimed at developing modularized and reconfigurable Silicon Carbide (SiC) power electronics systems exhibiting high-efficiency and integrated via a three-wire DC link.
The MoReSiC project researched a new concept of ACS composed of four types of power converters linked with medium voltage, bipolar DC link (+/- 750 V) and based on the same unified submodule using the latest achievements SiC technology. All the converters are controlled by the original power flow control algorithm, which is based on an analysis of possible operation modes. The scaled experimental system can provide slow and, after reconfiguration, fast charging of EVs from the supply grid. The charging may also be supported by the battery energy storage to limit the influence on the power system, but the storage alone may also provide grid support services.
The project performed considerable research on the field of power electronics concerning EV charging systems. The project developed a modular, reconfigurable, and bidirectional charging infrastructure for electric vehicles (EVs) using Silicon Carbide (SiC) power electronics. The use of SiC technology ensures high efficiency and reduced energy losses, which are critical for the economic viability and environmental sustainability of EV charging systems. Moreover, the proposed system is modular and flexible to accommodate a wide range of functionalities in power delivery.
Summary of bilateral results
The project enabled the partnership between a Polish and a Norwegian academic institute and a Polish SME. This partnership added significant value to the project and its participants by combining scientific expertise, technical capacities and creating opportunities for future collaboration in a very demanding sector of global interest. The collaboration strengthened networking, promoting the adoption of a more efficient and cost-effective system for EV charging. A considerable number of peer reviewed publications and public presentations were performed involving all members of the consortium under this partnership.