An electric power transmission system and method that provides a power electronic interface system for connecting a plurality of alternating current transmission lines by one or more direct current transmission lines. The system includes dc-link converters, frequency transformers connected to the converters, and multilevel converters are connected to a direct current transmission line.
US 20150155716 A1
Board of Trustees of the University of Arkansas (Little Rock, AR)
Balda, J. C., & Escobar-Mejía, A. (2017). AC line connector with intermediate DC link. Patents Granted. Retrieved from https://scholarworks.uark.edu/pat/319