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Comprehensive Analysis of Voltage Balancing Techniques For 5L NPC converters.pdf (468.5Kb)
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Title
Comprehensive analysis of voltage balancing techniques for 5L NPC converters
Author
Mazuela, Mikel ccMondragon Unibertsitatea
Baraia-Etxaburu, Igor ccMondragon Unibertsitatea
Author (from another institution)
Madariaga, D.
Atutxa, I.
Alvarez, S.
Research Group
Energía eléctrica
Published Date
2013
Publisher
IEEE
Keywords
Vectors
Modulation
Switches
Capacitors ... [+]
Vectors
Modulation
Switches
Capacitors
Inverters
Support vector machines
Switching loss [-]
Abstract
The reduced capability of the 5L-NPC Inverter to balance the voltages of the four DC-bus capacitors makes this converter unattractive for real power applications. This is especially true if the load d ... [+]
The reduced capability of the 5L-NPC Inverter to balance the voltages of the four DC-bus capacitors makes this converter unattractive for real power applications. This is especially true if the load demands active power. The Back-to-Back (B2B) configuration of two 5L-NPC converters and the use of a Space Vector Modulation (SVM) that exploits the voltage balancing capabilities of the redundant switching vectors, extend the operating conditions range in which a proper voltage balance can be achieved. However, if practical modulation restrictions are considered (limitation of voltage steps, dead times, switching losses, etc.) the voltage balance cannot be achieved for all operation conditions. This paper introduces the main restrictions that should be considered for the 5L-NPC modulation strategy. The voltage balancing limits of the proposed SVM scheme are shown and additional considerations to improve the voltage balancing capability are proposed and evaluated. [-]
URI
https://hdl.handle.net/20.500.11984/5794
Publisher’s version
https://doi.org/10.1109/EPE.2013.6631834
ISBN
978-1-4799-0116-6
Published at
2013 15th European Conference on Power Electronics and Applications (EPE)  2-6 Sept. Pp. 1-10. IEEE, 2013
Document type
Conference paper
Version
Postprint – Accepted Manuscript
Rights
© 2013 IEEE
Access
Open Access
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  • Conferences - Engineering [242]

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