Static converter switch with fast recovery freewheel diode
US4570213A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 3, 1984 |
| Grant date | Feb 11, 1986 |
| Priority date | — |
| Expiry date | Jul 3, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/5387
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A static converter, including at least one pair of mutually co-acting switching transistors (TR1, TR2), of which the first switching transistor (TR1) is controlled with a frequency exceeding the control frequency of the second switching transistor (TR2). A diode (D1, D2) is connected between the emitter and collector of respective switching transistors. The noval feature of the invention resides in that a voltage source (N1, P) is activated when the first switching transistor (TR1) is energized to its conducting mode (I.sub.R) and to supply a reverse recovery current (I.sub.rr) through the diode (D2) of the second switching transistor in the reverse direction of the diode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.