Title :
Three-phase unidirectional modular multilevel converter
Author :
de Sousa, Gean J. M. ; Heldwein, Marcelo L.
Author_Institution :
Electr. Eng. Dept., Fed. Univ. of SANTA CATARINA (UFSC), Florianopolis, Brazil
Abstract :
Unidirectional power flow voltage source converter high voltage direct current (VSC-HVDC) systems can be advantageously used in future dc subsea electric transmission and distribution systems (DC-SETDS) in order to reduce cost, increase efficiency and reliability. This work proposes a unidirectional modular multilevel converter (uMMC) suitable for VSC-HVDC systems used in DC-SETDS. The main advantage of the proposal is the reduced number of active switches, lowering costs and increasing reliability. Suitable currents and voltages control strategies are presented, as well as simulation results.
Keywords :
HVDC power transmission; cost reduction; electric current control; power convertors; power distribution control; power distribution economics; power distribution reliability; power transmission control; power transmission economics; power transmission reliability; voltage control; DC subsea electric transmission systems; DC subsea electric transmission-and-distribution systems; DC-SETDS; VSC-HVDC systems; active switches; cost reduction; current control strategy; high voltage direct current systems; three-phase unidirectional modular multilevel converter; uMMC; unidirectional power flow voltage source converter; voltage control strategy; Capacitors; HVDC transmission; Power conversion; Production; Topology; Voltage control; Converter control; Emerging topology; HVDC; Multilevel converters; Voltage Source Converter (VSC);
Conference_Titel :
Power Electronics and Applications (EPE), 2013 15th European Conference on
Conference_Location :
Lille
DOI :
10.1109/EPE.2013.6634676
