modular converter architecture for medium voltage ultra fast ev charging stations: dual half-bridge-based isolation stage - battery energy storage system

Concept of super fast charging for electric vehicles (EVs)
It is expected to greatly contribute to their extensive use over the long term
Travel distance.
In this direction, the emerging power electronics topology will become a key component of the developed charging infrastructure.
Recently, a new converter architecture has been proposed for this purpose.
The latter is based on Cascade H-Bridge (CHB)
The converter with integrated battery energy storage system plays a buffer role in such applications with high power requirements.
This paper focuses on the isolated DC/DC conversion phase required to achieve high charging current. The dual half-bridge (DHB)
A converter that meets several requirements of the applied research is selected.
Soft switch operation of the converter under wide input-
Changes in the output voltage are discussed.
In addition, a current controller capable of handling topology is designed.
Specific challenges.
Finally,
A laboratory prototype for scaling is described and experimental results are provided.