TY - GEN
T1 - Estimation methods and sensor reduction in modular multilevel converters
T2 - 8th International Conference on Power and Energy Systems, ICPES 2018
AU - Konstantinou, Georgios
AU - Wickramasinghe, Harith R.
AU - Townsend, Christopher D.
AU - Ceballos, Salvador
AU - Pou, Josep
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/7/2
Y1 - 2018/7/2
N2 - The circuit configuration of the modular multilevel converter (MMC) requires a large number of current and voltage measurements as well as communications within the converter arms and between the arm controllers and the main control circuit. In order to reduce circuit complexity and hardware requirements with their associated cost, while adding an additional level of reliability to the operation of the MMC, a number of methods have been proposed for the estimation / observation of the various internal electrical variables or parameters of the MMC. These include estimations for sub-module capacitor voltages, dc-link voltages, arm currents or total arm energy. Such methods aim to eliminate or reduce the sensors in the circuit, reduce communication requirements or both. This paper provides an overview and classification of the different estimation/observation methods for MMCs currently proposed in the literature.
AB - The circuit configuration of the modular multilevel converter (MMC) requires a large number of current and voltage measurements as well as communications within the converter arms and between the arm controllers and the main control circuit. In order to reduce circuit complexity and hardware requirements with their associated cost, while adding an additional level of reliability to the operation of the MMC, a number of methods have been proposed for the estimation / observation of the various internal electrical variables or parameters of the MMC. These include estimations for sub-module capacitor voltages, dc-link voltages, arm currents or total arm energy. Such methods aim to eliminate or reduce the sensors in the circuit, reduce communication requirements or both. This paper provides an overview and classification of the different estimation/observation methods for MMCs currently proposed in the literature.
KW - Modular multilevel converter
KW - estimation
KW - observation
UR - http://www.scopus.com/inward/record.url?scp=85062537815&partnerID=8YFLogxK
U2 - 10.1109/ICPESYS.2018.8626987
DO - 10.1109/ICPESYS.2018.8626987
M3 - Conference contribution
AN - SCOPUS:85062537815
T3 - 2018 8th International Conference on Power and Energy Systems, ICPES 2018
SP - 23
EP - 28
BT - 2018 8th International Conference on Power and Energy Systems, ICPES 2018
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 21 December 2018 through 22 December 2018
ER -