Modeling and Control of a Solid State Transformer and verification with Controller Hardware in the Loop

Climate change is driving the evolving energy mix in the world. The amount of renewables are rising to avoid the detrimental effects of fossil fuels to the environment. Solar and wind power are the major players in the rising renewable energy mix. Most of these power generation sources are interfaced through power electronic converters. In the...

Pulsed Ageing of Oil-Paper: Test Modulators and Ageing Trends

The ambitious transition towards a renewable future is being made possible by power electronic systems that facilitate effective control and efficient conversion of energy. One such system is the solid-state transformer (SST) which aims to replace conventional transformers by offering larger energy densities and flexible...

Isolated Bidirectional DC-DC Converter for Modular Medium Voltage (10 kV) Solid-State Transformer Application: A modular approach to connect low voltage DC grid to medium voltage AC grid

Recently, there have been numerous DC microgrids coming up in every sector. Some of these microgrids operate as independent entities with their own renewable energy sources, active loads, distribution networks and energy storage units. However, they are not highly reliable as the renewable energy sources are location and climate dependent....

Inverter Stage and Controller Architecture Design for a Modular Solid-State Transformer

This master's thesis presents the design and analysis of the inverter stage and controller architecture for a modular Solid-State Transformer (SST) to interconnect DC microgrids and a 10kV AC grid for bidirectional power flow. The research focuses on inverter topologies, modulation techniques, and modular controller architecture.<br/><br/>The...

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...