Three level power converting apparatus having means for balancing DC component thereof
US5627742A · kind A · utility
40Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1994 |
| Grant date | May 6, 1997 |
| Priority date | — |
| Expiry date | Sep 1, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60L2200/26
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In order to equalize voltage shares of DC-side voltage dividing capacitors of a three-level power converting apparatus for converting a DC voltage to a three-level AC phase voltage, there is provided an arrangement for compensating for rising and falling instances of a three-level AC voltage pulse depending on a difference voltage between the two voltage dividing capacitors and the polarity of the AC current, thereby adjusting a zero-voltage period of the AC voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.