Abstract
The neutral-point-clamped (NPC) converter employed in applications like bipolar dc-bus, back-to-back converters, power compensator, etc., requires a nonzero average neutral-point (NP) current injection under certain operating conditions. In order to better implement the average NP current injection, this paper studies the maximum and minimum average NP current that can be injected with an NPC converter. For this study, a three-level modulation technique is employed in which one of the three phases is selected to switch between the positive dc-rail and the negative dc-rail while the other two phases switch in two consecutive voltage levels. The maximum and minimum average NP current injection limits are analyzed under different loading conditions. The presented study also evaluates the effects of modulation index and operating power factor on the limits.
| Original language | English |
|---|---|
| Title of host publication | Proceedings - IECON 2020 |
| Subtitle of host publication | 46th Annual Conference of the IEEE Industrial Electronics Society |
| Publisher | IEEE Computer Society |
| Pages | 4079-4084 |
| Number of pages | 6 |
| ISBN (Electronic) | 9781728154145 |
| DOIs | |
| Publication status | Published - Oct 18 2020 |
| Externally published | Yes |
| Event | 46th Annual Conference of the IEEE Industrial Electronics Society, IECON 2020 - Virtual, Singapore, Singapore Duration: Oct 19 2020 → Oct 21 2020 |
Publication series
| Name | IECON Proceedings (Industrial Electronics Conference) |
|---|---|
| Volume | 2020-October |
Conference
| Conference | 46th Annual Conference of the IEEE Industrial Electronics Society, IECON 2020 |
|---|---|
| Country/Territory | Singapore |
| City | Virtual, Singapore |
| Period | 10/19/20 → 10/21/20 |
Bibliographical note
Publisher Copyright:© 2020 IEEE.
ASJC Scopus Subject Areas
- Control and Systems Engineering
- Electrical and Electronic Engineering
Keywords
- Neutral-point current
- neutral-point-clamped (NPC) converter
- three-level modulation