Active damping circuit for electric chopper circuit
US8604860B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 30, 2009 |
| Grant date | Dec 10, 2013 |
| Priority date | — |
| Expiry date | Apr 7, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A snubber circuit for a chopper circuit has at least one chopper transistor with terminals connected to a first line and to a second line, the first line being at a power supply potential and the second line being at ground potential. The snubber circuit has a capacitive element and a charging diode for charging the capacitive element. The charging diode and the capacitive element are connected in series to each other and together they are connected in parallel with the chopper transistor. The snubber circuit has an inductive element having a first end connected to a connection point situated between the charging diode and the capacitive element, and a second end connected to one of the lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.