RT Journal Article
T1 A Modified Voltage Balancing Algorithm for the Modular Multilevel Converter: 												Evaluation for Staircase and Phase-Disposition PWM
A1 Darus, Rosheila
A1 Pou, Josep
A1 Konstantinou, Georgios
A1 Ceballos, Salvador
A1 Picas, Ricard
A1 Agelidis, Vassilios G.
AB This paper introduces a low complexity implementation of the voltage balancing algorithm aiming to reduce the switching frequency of the power devices in modular multilevel converters (MMCs). The proposed algorithm features a relatively simple implementation without any conditional execution requirements and is easily expandable regardless of the number of submodules (SMs). Two modulation techniques are evaluated, namely the staircase modulation and the phase-disposition pulse width modulation (PD-PWM) under the conventional and the proposed algorithm. Using a circulating current controller in an MMC with 12 SMs 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 experiments on a low power phase-leg MMC laboratory prototype.
SN 0885-8993
YR 2015
FD 2015-08
LK https://hdl.handle.net/11556/4319
UL https://hdl.handle.net/11556/4319
LA eng
NO Darus , R , Pou , J , Konstantinou , G , Ceballos , S , Picas , R & Agelidis , V G 2015 , ' A Modified Voltage Balancing Algorithm for the Modular Multilevel Converter : Evaluation for Staircase and Phase-Disposition PWM ' , IEEE Transactions on Power Electronics , vol. 30 , no. 8 , 6902804 , pp. 4119-4127 . https://doi.org/10.1109/TPEL.2014.2359005
NO Publisher Copyright: © 1986-2012 IEEE.
DS TECNALIA Publications
RD 28 jul 2024