TY - GEN
T1 - A modified voltage balancing sorting algorithm for the modular multilevel converter
T2 - 29th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2014
AU - Darus, Rosheila
AU - Pou, Josep
AU - Konstantinou, Georgios
AU - Ceballos, Salvador
AU - Agelidis, Vassilios G.
PY - 2014
Y1 - 2014
N2 - This paper introduces a low complexity implementation of the voltage balancing sorting algorithm to reduce the switching frequency of the power devices in modular multilevel converters (MMCs). Two modulation techniques are evaluated; staircase modulation and phase-disposition pulse-width modulation (PD-PWM) under the conventional and the proposed algorithm. Using a circulating current controller in an MMC with 12 sub-modules per arm, PD-PWM yields better results compared to the staircase modulation technique. The test condition for this comparison is such that the power devices operate at a similar switching frequency and produce similar amplitudes to the capacitor voltage ripples in both modulation techniques. The results are verified through extensive simulations and experimentally using a phase-leg MMC laboratory prototype.
AB - This paper introduces a low complexity implementation of the voltage balancing sorting algorithm to reduce the switching frequency of the power devices in modular multilevel converters (MMCs). Two modulation techniques are evaluated; staircase modulation and phase-disposition pulse-width modulation (PD-PWM) under the conventional and the proposed algorithm. Using a circulating current controller in an MMC with 12 sub-modules per arm, PD-PWM yields better results compared to the staircase modulation technique. The test condition for this comparison is such that the power devices operate at a similar switching frequency and produce similar amplitudes to the capacitor voltage ripples in both modulation techniques. The results are verified through extensive simulations and experimentally using a phase-leg MMC laboratory prototype.
KW - Capacitor voltage balancing
KW - Modular multilevel converter
KW - Modulation technique
KW - Pulse-width modulation
UR - https://www.scopus.com/pages/publications/84900419732
U2 - 10.1109/APEC.2014.6803318
DO - 10.1109/APEC.2014.6803318
M3 - Conference contribution
AN - SCOPUS:84900419732
SN - 9781479923250
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 255
EP - 260
BT - APEC 2014 - 29th Annual IEEE Applied Power Electronics Conference and Exposition
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 16 March 2014 through 20 March 2014
ER -