Internal paralleled active neutral point clamped converter with logic-based flying capacitor voltage balancing
US10924031B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2019 |
| Grant date | Feb 16, 2021 |
| Priority date | — |
| Expiry date | May 3, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An internal parallelization based active neutral point clamped (IP-ANPC) converter is provided having a low switching frequency (LSF) part and a plurality of high switching frequency (HSF) modules. The HSF modules are connected in parallel and the converter is modular. The converter provides the benefits of modularity, improved reliability and efficiency, interleaving operation, and reasonable utilization of wide band gap (WBG) devices. A logic based flying capacitor voltage balancing scheme is also provided. The balancing scheme includes naturally balancing the voltage of the converter with phase shift pulse width modulation and redundantly balancing the voltage of the converter with redundant switching states.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.