Power converter control system using fixed pulse pattern, and control method
US11601039B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2020 |
| Grant date | Mar 7, 2023 |
| Priority date | — |
| Expiry date | Mar 30, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A minimum number of levels required to output a target modulation ratio is determined. Additionally, determining a total number of voltage orders to be controlled among a voltage fundamental wave and harmonics of power converter, comparing the minimum number of levels and the total number of voltage orders to be controlled, and fixing a larger one as a number of switching times in a quarter cycle for the target modulation ratio are performed. Further, when the total number is fixed, a shape of an output voltage is determined, and based on the target modulation ratio and the number of switching times in the quarter cycle, a determination of switching phases is made, in addition to a derivation of the pulse pattern for one cycle by which each output voltage level is used according to the target modulation ratio and the output voltage shape, and the phase is determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.