Modelling, Control System Design and Comparison of Star and Delta Connected Solid-State Transformers: A study of three MVAC to LVDC Modular Multilevel Converter based Solid State Transformers for Ultra-Fast EV Charging Applications

With an increase in higher power (ultra) fast EV charging stations and a new EU law for mandatory deployments of EV charging stations, an optimal MVAC grid connection for these charging stations is desired. Considering this connection, the use of a solid-state transformer (SST) performs better in terms of weight, size and efficiency with a...

Digital Twin of an isolated DC/DC converter for electrolysis

To utilize electronic power converters for water electrolysis in industrial electrical networks, reliable testing methods are required to ensure safe control operation as malfunctions can instigate hydrogen explosion and fierce electrical hazards. In this thesis, Digital Twin modeling via OPAL-RT software and hardware is compared to Simulink and...

GaN-Based Multi-Active-Bridge Converter with Hot-Swapping Capability

This thesis addresses a novel configuration of hot-swappable Multi-Active-Bridge (MAB) DC/DC converter in renewable-energy-based systems. As an extension of the Dual-Active-Bridge (DAB) converter, the MAB converter provides a multiport DC/DC converter solution with bidirectional power flow, simple phase shift control and galvanic isolation, but...

A Dual Active Bridge DC-DC Converter for Automotive Applications: Design of a High Efficiency Bidirectional DAB Converter for the Lightyear One

In the past years electric cars have been rapidly taking market share in the automotive industry. Stimulated by their sustainable image and due to large investments in the charging infrastructure, the electric automobile has gained popularity in the field of research. Many papers are written on a variety of power converters inside the cars to...

Electric vehicle charger for future DC Grids: Design of a 10kW isolated bidirectional DC-DC converter with wide output voltage range

Over the last decade the share of electric vehicles has increased and will continue to increase in the future in order to reduce the carbon footprint by transportation. However, the battery voltage is not standardised and can differ per car model. To reduce the charging time, a high power converter is preferred. Moreover, in order to utilise the...

DC/DC Converter For Helicopter Starter/Generator

The use of power electronics DC/DC converters in aircraft has increased due to the state-of-art converters developments. However, the volume, efficiency and mass of such converters are critical issues. Each component of the DC/DC converters contributes to the total mass of the system. By designing each component, optimized to have small volume,...