Free wheel diode arrangement for neutral point clamped electric power conversion apparatus
US5638266A · kind A · utility
39Cited by
10References
5Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 10, 1995 |
| Grant date | Jun 10, 1997 |
| Priority date | — |
| Expiry date | Mar 10, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60L2200/26
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention is directed to a neutral point clamped electric power conversion apparatus having four semiconductor switching elements connected in series. The capacity of outer free wheel diodes connected in reverse parallel with outer semiconductor switching elements are increased compared to that of inner free wheel diodes, thereby minimizing, an imbalance in losses between the inner and the outer free wheel diodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.