Abstract
Overmoduation techniques are used to improve dc bus voltage utilization for three-phase voltage-source converters (VSCs), resulting in significant reduction in fundamental voltage gain. Conventional pulsewidth modulation (PWM) techniques for three-phase VSCs cannot enhance the linear range of dc bus utilization by more than 15.5%. In this letter, a conditional sixth-harmonic injection technique is introduced, which can theoretically improve the linear modulation range by up to 19.2% for three-phase ac systems without additional hardware components. Experimental validation of the proposed scheme is presented, with its performance compared against the conventional third-harmonic PWM technique.
| Original language | English |
|---|---|
| Pages (from-to) | 15441-15445 |
| Number of pages | 5 |
| Journal | IEEE Transactions on Power Electronics |
| Volume | 39 |
| Issue number | 12 |
| DOIs | |
| State | Published - 2024 |
Funding
This material is based upon work supported by the US Department of Energy, Office of Electricity, Advanced Grid Modeling Program, under Contract DE-AC05-00OR22725.
| Funders | Funder number |
|---|---|
| U.S. Department of Energy | DE-AC05-00OR22725 |
Keywords
- Conditional harmonic injection
- electromagnetic interference (EMI)
- linear modulation range
- overmodulation (OVM)
- pulsewidth modulation (PWM)
- three-phase drive
- total harmonic distortion (THD)