Proceedings of the 2015 International Conference on Electrical, Computer Engineering and Electronics

A General Analytical Calculation of DC-Link Current and Voltage Ripple for 3L-NPC-Voltage Source Inverter

Authors
Xuebing Pei
Corresponding Author
Xuebing Pei
Available Online June 2015.
DOI
https://doi.org/10.2991/icecee-15.2015.132How to use a DOI?
Keywords
dc-link current; voltage ripple; 3L-NPC-VSI; 2L-VSI
Abstract
In this paper, a general analytical calculation of dc-link current and voltage ripple is presented for three-level three-phase neutral-point-clamped voltage source inverter (3L-NPC-VSI). Based on the analysis of average dc-link current of the upper and lower switches, the low-frequency oscillation of the neutral point (NP) voltage can be eliminated by injecting a zero sequence component. Moreover, the general expression of the root-mean-square (RMS) dc-link current is derived. In addition, the dc-link average current, rms current, and voltage ripple of the 3L-NPC-VSI are compared with those of the 2L-VSI, and it shows similar dc-link characteristics. Simulation results are shown to verify the theoretical analysis. The results can be extended to any PDPWM with NP voltage control strategy.
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Proceedings
2015 2nd International Conference on Electrical, Computer Engineering and Electronics
Part of series
Advances in Computer Science Research
Publication Date
June 2015
ISBN
978-94-62520-81-3
ISSN
2352-538X
DOI
https://doi.org/10.2991/icecee-15.2015.132How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - Xuebing Pei
PY  - 2015/06
DA  - 2015/06
TI  - A General Analytical Calculation of DC-Link Current and Voltage Ripple for 3L-NPC-Voltage Source Inverter
BT  - 2015 2nd International Conference on Electrical, Computer Engineering and Electronics
PB  - Atlantis Press
SP  - 659
EP  - 665
SN  - 2352-538X
UR  - https://doi.org/10.2991/icecee-15.2015.132
DO  - https://doi.org/10.2991/icecee-15.2015.132
ID  - Pei2015/06
ER  -