Mutarraf, Muhammad Umair

Mutarraf, Muhammad Umair

PROJECT TITLE: Integration of Energy Storage Systems in Future Shipboard Microgrids

PhD period: 2018.05.01 – 2021.04.30. (has been prolonged till 2021.10.31)
Section: Power Electronic Systems 
Research Programmes: Microgrids
Supervisor: Josep Guerrero
Co-Supervisor: Juan Carlos VasquezYajuan Guan 
Contact Information

Collaborator: To be announced later.
Funding: Self-financing.


Recently, ship microgrids gained considerable attention due to large-scale integration of power electronics based sources and loads. The characteristics of islanded terrestrial microgrids are similar to ship microgrids but the existence of high dynamic loads in ship microgrids such as propulsion, AC and DC variable speed drives, thrusters, various operational schemes, power control and management makes it complex candidate as compared to terrestrial microgrids. There are severe regulations enforced by maritime authorities regarding the concerns about fuel cost and air quality due to which higher use of efficient generation methods such as renewable energy sources and energy storage system (ESS) has become mandatory in order to achieve better fuel economy, a step towards greener and safe marine vessels. Hence, the integration of renewable energy sources with the grids, modern power electronic based technologies, and non-linear unbalanced loads results into power quality issues. These issues can be categorized as frequency fluctuations, voltage fluctuations, and waveform distortions more often cited as harmonic distortion. ESS is thought-out to be the most promising solution for mitigation of frequency and/or fluctuations among other solutions whereas to diminish harmonic distortions, passive and active filters are used. Therefore, this PhD research project will be focused on investigation of the design, sizing and integration of ESS consisting on battery, flywheel, ultra-capacitor or a combination of them for future shipboard power systems.


Publications in journals and conference papers may be found at VBN.