Overcurrent detection circuit, drive control device, and power conversion device
US12191844B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 22, 2023 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Mar 31, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/5387
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An overcurrent detection circuit including a detection unit for detecting whether a current flowing between main terminals of a main switching device used by a power conversion device is an overcurrent, and a switching unit for switching among thresholds used for determining the overcurrent in the detection unit according to in which phase of the power conversion device the main switching device is used, in which the detection unit includes a plurality of comparison units for comparing a parameter according to the current flowing between main terminals, and thresholds different from each other, and the switching unit is for switching a comparison unit to use for detection of the overcurrent among the plurality of comparison units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.