Control circuit of NPC-type three-level converter, NPC-type three-level converter and wind power generator set
US11722071B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2020 |
| Grant date | Aug 8, 2023 |
| Priority date | — |
| Expiry date | Sep 10, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/76
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control circuit for an NPC-type three-level converter is provided. Each phase bridge arm of the NPC-type three-level converter includes multiple IGBT devices. For each phase bridge arm, a control circuit corresponding to the phase bridge arm includes an off-time control circuit and a timing control circuit. The off-time control circuit is configured to reserve a preset time period for turn-off of the multiple IGBT devices in the corresponding phase bridge arm. The timing control circuit includes a first sub-circuit and a second sub-circuit, and each sub-circuit of the first sub-circuit and the second sub-circuit includes: a first fixed delay circuit, a second fixed delay circuit, a first AND gate circuit and a first OR gate circuit. For each sub-circuit, output terminals of the first AND gate circuit and the first OR gate circuit serve as output terminals of the timing control circuit, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.