A Back-to-Back 2L-3L Grid Integration of a Marine Current Energy Converter
2015 (English)In: Energies, ISSN 1996-1073, Vol. 8, no 2, 808-820 p.Article in journal (Refereed) Published
The paper proposes a back-to-back 2L-3L grid connection topology for a marine current energy converter. A prototype marine current energy converter has been deployed by a research group at Uppsala University. The concept behind the prototype revolves around a fixed pitch vertical axis turbine directly connected to a permanent magnet synchronous generator (PMSG). The proposed grid connection system utilizes a well known and proven two level voltage source converter generator-side combined with a three-level cascaded H-bridge (CHB) multilevel converter grid-side. The multilevel converter brings benefits in terms of efficiency, power quality and DC-link utilization. The system is here presented for a single marine current energy converter but can easily be scaled up for clusters of marine current energy converters. Control schemes for both grid-side and generator-side voltage source converters are presented. The start-up, steady state and dynamic performance of the marine current energy converter are investigated and simulation results are presented in this paper.
Place, publisher, year, edition, pages
2015. Vol. 8, no 2, 808-820 p.
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:uu:diva-253090DOI: 10.3390/en8020808ISI: 000353555400001OAI: oai:DiVA.org:uu-253090DiVA: diva2:814294