Protective circuit and method for multi-level converter
US7573732B2 · kind B2 · utility
62Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 2007 |
| Grant date | Aug 11, 2009 |
| Priority date | — |
| Expiry date | Oct 31, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E40/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A protective circuit for a multi-level converter including a DC link capacitor bank includes: an energy absorbing element; switches, wherein at least two of the switches each couple the energy absorbing element to the capacitor bank; and a controller configured to provide control signals to the switches to selectively actuate the switches to enable control of energy dissipation and to enable control of voltage balance on the capacitor bank of the multi-level converter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.