Bortecene Yildirim
DC-DC power onverter topologies for modular battery systems.
- Email: y.bortecene2@ncl.ac.uk
Project title
Energy sharing control methods for distributed energy storage systems
Supervisors
Project description
Battery energy storage systems work with renewable resources to cope with peak shaving, load levelling, voltage regulation, power quality assurance and stabilising demand variations.
Battery packs are low voltage, so they need central bidirectional DC-DC converters. The converter matches the battery voltage to the bus line and controls the battery charging and discharging current. But when the central battery system relies on a central converter, it needs a high voltage gain converter. It also has low reliability.
Compared to central systems, modular battery systems can achieve high voltage gain without significant effort. These systems are also more reliable. Continuous battery balancing and improved reliability make modular systems suitable for pre-used batteries. We expect high imbalance in such cases. The main disadvantages of the modular battery systems are its high cost and complex control method.
We are investigating bidirectional DC-DC power converter topologies for modular battery systems. We are considering the number of components, size, efficiency, fault tolerance and cost.
We will also propose a new power-sharing method for modular battery systems. We will examine both the status of battery modules and the efficiency of the system. The new power-sharing algorithm shares power among modules. It does this in the most efficient way at all charging and discharging load conditions.
We will develop a simulation model of the system using Simulink/MATLAB. We will construct an experimental prototype in the lab to confirm the results from the simulated model.
Interests
Battery energy storage systems, distributed generation, power electronic converters, modular converters.
Qualifications
- BSc in Electrical and Electronics Engineering
- MSc in Electrical Power Engineering