Title :
A modular solid state transformer with a single-phase medium-frequency transformer
Author :
Shojaei, Ali ; Joos, Geza
Author_Institution :
Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC, Canada
Abstract :
A number of topologies have been introduced for Solid State Transformer (SST); each has its own pros and cons. The three-stage topology, employing a multilevel converter as the first stage, is the most commonly adopted topology in the recent literature. In this paper, a three-stage SST topology is proposed which employs modular multilevel converters in both the first and second stages. The proposed topology: is easily scalable to higher voltage levels; requires only one medium-frequency transformer, simplifying the implementation and control; and provides high-voltage DC as well as high-voltage AC, low-voltage AC and low-voltage DC terminals.
Keywords :
AC-AC power convertors; AC-DC power convertors; HVDC power convertors; power transformers; medium-frequency transformer; modular multilevel converters; solid state transformer; three-stage SST topology; Capacitors; HVDC transmission; Load flow; Power electronics; Solids; Topology; Voltage control; DC Grid; Modular Multilevel Converter; Solid State Transformer;
Conference_Titel :
Electrical Power & Energy Conference (EPEC), 2013 IEEE
Conference_Location :
Halifax, NS
Print_ISBN :
978-1-4799-0105-0
DOI :
10.1109/EPEC.2013.6802940