Partial regeneration in a multi-level power inverter
US7940537B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2008 |
| Grant date | May 10, 2011 |
| Priority date | — |
| Expiry date | Apr 25, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M5/4585
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In one embodiment, the present invention includes a medium voltage drive system having multiple power cells each to couple between a transformer and a load. A first subset of the power cells are configured to provide power to the load and to perform partial regeneration from the load, and a second subset of the power cells are configured to provide power to the load but not perform partial regeneration. A controller may be included in the system to simultaneously control a DC bus voltage of at least one of the first subset of the power cells, correct a power factor of the system, and provide harmonic current compensation for the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.