Precharge apparatus for power conversion system
US9837924B1 · kind B1 · utility
7Cited by
16References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2016 |
| Grant date | Dec 5, 2017 |
| Priority date | — |
| Expiry date | Jun 2, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/219
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Power conversion systems, methods and precharge systems are disclosed to charge a DC bus capacitor, including thyristors and reverse diodes coupled in AC circuit paths between AC input lines and a rectifier, a precharge resistor coupled in one or more of the AC circuit paths, and a controller to turn all the thyristors off to allow the DC bus capacitor to charge through the precharge resistor, and to turn all the thyristors on when the DC bus voltage reaches a non-zero threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.