NDLI: Analysis and Calculation of Zero-Sequence Voltage Considering Neutral-Point Potential Balancing in Three-Level NPC Converters

Content Provider	IEEE Xplore Digital Library
Author	Chenchen Wang Yongdong Li
Copyright Year	1982
Abstract	The neutral-point (NP) potential of the three-level neutral-point-clamped converters is needed to maintain balancing. Zero-sequence voltage is the only freedom degree when carrier-based pulsewidth modulation is utilized. Appropriate zero-sequence voltage should be identified to control the NP potential. The relationship between the neutral current and injected zero-sequence voltage is studied comprehensively, and two balancing algorithms of NP potential, respectively adopting searching-optimization and interpolation methods, are presented. The theoretical optimum zero-sequence voltage for controlling NP potential can be obtained by the latter proposed algorithm. Simulation and experimental results are shown to verify the validity and practicability of the proposed algorithms.
Sponsorship	IEEE Industrial Electronics Society
Starting Page	2262
Ending Page	2271
Page Count	10
File Size	1704299
File Format	PDF
ISSN	02780046
Volume Number	57
Issue Number	7
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Space vector pulse width modulation Zero voltage switching Voltage control Pulse modulation Interpolation Medium voltage Power conversion Capacitors Switching frequency Switching loss zero-sequence voltage Balancing algorithm neutral point clamped (NPC) neutral-point (NP) potential
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Electrical and Electronic Engineering Computer Science Applications

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