A General Analytical Calculation of DC-Link Current and Voltage Ripple for 3L-NPC-Voltage Source Inverter
Available Online June 2015.
- https://doi.org/10.2991/icecee-15.2015.132How to use a DOI?
- dc-link current; voltage ripple; 3L-NPC-VSI; 2L-VSI
- 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.
- 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 -