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| Content Provider | IET Digital Library |
|---|---|
| Author | Luo, Fei Loo, Ka Hong Lai, Yuk Ming |
| Abstract | Neutral-point-clamped (NPC) three-level inverters can drive a combination of single- and three-phase loads or non-linear in a three-phase four-wire distribution system. However, an intrinsic problem with NPC three-level inverters is the fluctuation in the neutral-point (NP) voltage. In this study, a dynamic model of the NP voltage in a three-phase four-wire system will be analysed and developed. On the basis of this model, a simple carrier-based pulse-width modulation scheme for NP balancing is proposed. The proposed scheme decouples the NP voltage balancing from the necessity to control phase voltages, and controls the NP voltage without introducing zero-sequence voltage, thus the scheme can be applied to a general NPC voltage source inverter. The effectiveness of the proposed modulation scheme is verified by both simulation and experimental results. Finally, these results are compared with those reported in the literature. |
| Starting Page | 365 |
| Ending Page | 376 |
| Page Count | 12 |
| ISSN | 17554535 |
| Volume Number | 9 |
| e-ISSN | 17554543 |
| Issue Number | Issue 2, Feb (2016) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-pel/9/2 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2014.0906 |
| Journal | IET Power Electronics |
| Publisher Date | 2016-02-10 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Control of Electric Power System General NPC Voltage Source Inverter Invertors Neutral-point Voltage Neutral-point Voltage Balancing Neutral-point-clamped Three-level Inverter NP Voltage Balancing NP Voltage Control Phase Voltage Control PWM Invertors Simple Carrier-based Pulse-width Modulation Scheme Single-phase Load Three-phase Four-wire Distribution System Three-phase Four-wire Neutral-point-clamped Inverter Three-phase Load Voltage Control Zero-sequence Voltage |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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