Saturable inductor protection circuit for inductive load driver
US5202820A · kind A · utility
10Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1991 |
| Grant date | Apr 13, 1993 |
| Priority date | — |
| Expiry date | Dec 16, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/538
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus are disclosed for relieving stresses related to reverse recovery of free-wheeling diodes of power inverter circuits used to drive inductive loads by utilizing saturating inductors which are connected between switching transistors of the inverter circuit and the inductive load. Circuit elements are also connected to the switching devices of the inverter circuits for initially conducting free-wheeling current through an inductive load upon the turn-off of an inverter transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.