Method for identifying a correct operation of an electrical switching unit, computer program product for executing such a method, and full bridge circuit with a control device for executing such a method
US10749521B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 26, 2019 |
| Grant date | Aug 18, 2020 |
| Priority date | — |
| Expiry date | Nov 26, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/30
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method for identifying correct operation of an electrical switching unit, having a full bridge circuit and inductive load operated by the full bridge circuit. The full bridge circuit includes a first semiconductor switching element supplying the inductive load with a first supply voltage potential and a second semiconductor switching element supplying the inductive load with a second supply voltage potential, having a smaller value than the first supply voltage potential. The first and second semiconductor switching element each have a diode. The method determines that the first semiconductor switching element changes from an activated state into a deactivated state, measures a voltage applied to the second semiconductor switching element, compares the measured voltage with a first threshold and detecting that, if the measured voltage on the second semiconductor switching element falls below the second supply voltage potential by the predefined first threshold, the electrical switching unit is operating correctly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.