Four pole neutral-point clamped three phase converter with low common mode voltage output
US7920393B2 · kind B2 · utility
44Cited by
10References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2008 |
| Grant date | Apr 5, 2011 |
| Priority date | — |
| Expiry date | Sep 29, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/385
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A four pole, three-phase, NPC converter that produces virtually no common mode voltage. The low common mode voltage output is achieved by constraining the switch states of the NPC converter. A fourth pole and associated control balance the upper and lower DC link voltages. The converter may be an inverter or a rectifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.