Method and device for switching on and off power semiconductors, especially for the torque-variable operation of an asynchronous machine, for operating an ignition system for spark ignition engines, and switched-mode power supply
US7046051B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2003 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | Aug 19, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/168
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method and device for switching power semi-conductors on and off, especially for IGBTs and MOS-FETs with inductive loads, and how they would be employed with torque-variable asynchronous machines, in ignition systems for spark ignition engines, in switch mode power supplies and power factor controllers. During a switching operation of the power semiconductor, a voltage across the semiconductor and the current through the semiconductor are measured, a time function of the voltage as well as a time function of the current are controlled, and the control of the voltage time function and the control of the current time function are effected essentially one after the other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.