RT Conference Proceedings
T1 Submodule Voltage Balancing and Loss Equalisation in Alternate Arm Converters Based on Virtual Voltages
A1 Konstantinou, Georgios
A1 Wickramasinghe, Harith R.
A1 Ceballos, Salvador
A1 Pou, Josep
AB Balancing of the submodule (SM) capacitor voltages in the alternate arm converter (AAC) exhibits a great amount of similarities with other modular topologies, especially the modular multilevel converter (MMC). However, the requirements of operation at overmodulation range and the alternate conduction of the phase current further complicate the voltage balancing task. In this paper, a voltage balancing and loss equalisation approach based on virtual SM voltages in combination with sorting algorithms is introduced. The developed approach uses the switching states of the SMs as feedback and provides reduction of the switching frequency of the SMs, further addressing excessive switching due to component parameter variation, tolerances and faults. The effectiveness of the algorithm is demonstrated with simulation results from an equivalent full switching model of an AAC for HVDC applications.
PB Institute of Electrical and Electronics Engineers Inc.
SN 9784886864055
YR 2018
FD 2018-10-22
LA eng
NO Konstantinou , G , Wickramasinghe , H R , Ceballos , S & Pou , J 2018 , Submodule Voltage Balancing and Loss Equalisation in Alternate Arm Converters Based on Virtual Voltages . in 2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018 . , 8507725 , 2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018 , Institute of Electrical and Electronics Engineers Inc. , pp. 3117-3122 , 8th International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018 , Niigata , Japan , 20/05/18 . https://doi.org/10.23919/IPEC.2018.8507725
NO conference
NO Publisher Copyright: © 2018 IEEJ Industry Application Society.
NO ACKNOWLEDGMENT This research was supported under Australian Research Council’s Discovery Early Career Research Award (DECRA - DE170100370).
DS TECNALIA Publications
RD 28 jul 2024