Neutral point clamped (NPC) power converter fault protection system
US8625316B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2011 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Apr 3, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A neutral point clamped (NPC) power converter fault protection system is provided, and include a DC bus, a switching network, and a control module. The switching network is connected to the DC bus. The switching network includes at least two leg circuits. Each of the at least two leg circuits includes at least two switches connected in series and two NPC diodes. Each of the two NPC diodes corresponds to one of the at least two switches. Each of the at least two switches has an open position. The two NPC diodes are connected between a corresponding one of the at least two leg circuits and the DC bus. The control module is in communication with the switching network. The control module includes control logic for monitoring the switching network to detect a fault condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.