TY - GEN
T1 - Analysis and experimental validation of a modular multilevel converter with 3-level T-type submodules
AU - Sahoo, Ashish Kumar
AU - Mohan, Ned
PY - 2017/5/17
Y1 - 2017/5/17
N2 - Modular multilevel converters (MMC) have become an attractive solution for high voltage direct current (HVDC) transmission applications due to its scalability, reliability and easy maintenance. Considerable work has been around the conventional 2-level half-bridge submodule. Use of multilevel submodules can result in smaller overall footprint, reduced components and lower losses. This paper presents the analysis and experimental validation of a MMC based HVDC system using 3-level T-type submodule. A hybrid modulation scheme, modified voltage balancing algorithm and circulating current control is presented. For practical implementation, an intelligent commutation technique is proposed that results in 66% of the switching transitions to be soft switched. The working principle is validated by simulations in MATLAB/Simulink and experimental results on a scaled down laboratory prototype.
AB - Modular multilevel converters (MMC) have become an attractive solution for high voltage direct current (HVDC) transmission applications due to its scalability, reliability and easy maintenance. Considerable work has been around the conventional 2-level half-bridge submodule. Use of multilevel submodules can result in smaller overall footprint, reduced components and lower losses. This paper presents the analysis and experimental validation of a MMC based HVDC system using 3-level T-type submodule. A hybrid modulation scheme, modified voltage balancing algorithm and circulating current control is presented. For practical implementation, an intelligent commutation technique is proposed that results in 66% of the switching transitions to be soft switched. The working principle is validated by simulations in MATLAB/Simulink and experimental results on a scaled down laboratory prototype.
KW - Circulating current control
KW - Commutation
KW - Highvoltage direct current (HVDC) transmission
KW - Modular multilevel converter (MMC)
KW - Pulse-width modulation (PWM)
UR - http://www.scopus.com/inward/record.url?scp=85020070440&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85020070440&partnerID=8YFLogxK
U2 - 10.1109/APEC.2017.7930952
DO - 10.1109/APEC.2017.7930952
M3 - Conference contribution
AN - SCOPUS:85020070440
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 1865
EP - 1872
BT - 2017 IEEE Applied Power Electronics Conference and Exposition, APEC 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017
Y2 - 26 March 2017 through 30 March 2017
ER -
