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New measuring technique for reducing the number of voltage sensors in modular multilevel converters

Author
Picas, R.; Zaragoza, J.; Pou, J.; Ceballos, S.; Balcells, J.
Type of activity
Journal article
Journal
IEEE transactions on power electronics
Date of publication
2016-01-01
Volume
31
Number
1
First page
177
Last page
187
DOI
https://doi.org/10.1109/TPEL.2015.2412658 Open in new window
Repository
http://hdl.handle.net/2117/85007 Open in new window
http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7059199&tag=1 Open in new window
Abstract
This paper presents a new technique for measuring the capacitor voltages in a modular multilevel converter using a reduced number of voltage sensors. With this technique, the minimum number of voltage sensors per arm is two. Each sensor measures the output voltage of a set of submodules (SMs) connected in series and acquires a new measurement when there is only one SM activated within the set. The acquired value corresponds to the capacitor voltage of the activated SM minus the voltage drops pro...
Citation
Picas, R., Zaragoza, J., Pou, J., Ceballos, S., Balcells, J. New measuring technique for reducing the number of voltage sensors in modular multilevel converters. "IEEE transactions on power electronics", 01 Gener 2016, vol. 31, núm. 1, p. 177-187.
Keywords
Capacitor voltage estimator, HVDC SYSTEM, OBSERVER, OPERATION, SWITCHING-FREQUENCY, modular multi-level converter (MMC), reduced number of sensors, voltage measurement
Group of research
Electromagnetic Compatibility (EMC); Widebandgap (WBG); Internal Activity; Feature Selective Validation (FSV); Spread Spectrum modulation; Reliability; Multilevel Converters; Fault detection;
PERC-UPC - Power Electronics Research Centre

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