DC metering device and method
US11143677B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 25, 2021 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Jan 25, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S30/14
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A DC metering device includes: two current transducers comprising hall sensors for measuring direct currents; two electrical switches; and a control device. Each one current transducer and one switch are connected in series by series connections. The series connections of the current transducers and switches are connected in parallel. The control device switches off in a repeating sequence alternately one of the switches and to continuously calculate a sum of continuously measured direct currents subtracted by measured zero offset currents of the two current transducers. The zero offset currents are measured when no current goes through the current transducers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.