Current ripple reduction for a direct current source powering an alternating current load
US11128212B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2020 |
| Grant date | Sep 21, 2021 |
| Priority date | — |
| Expiry date | Apr 14, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/493
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Systems and methods for current ripple reduction for a direct current (DC) source powering an alternating current (AC) load. In accordance with one embodiment, the system and method involve interleaved operation of a 3×3-phase AC motor having multiple groups of windings. In accordance with another embodiment, the system and method involve interleaved operation of multiple co-shafted 3-phase AC motors. In accordance with a further embodiment, the system and method involve interleaved operation multiple 3-phase AC motors (not co-shafted) of the same level of power. The interleaved operation entails interleaved switching inside a set of inverters which are connected in parallel between a DC bus and the windings of the AC motor (motors).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.