Producing a motor voltage for a switch drive
US12301146B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2020 |
| Grant date | May 13, 2025 |
| Priority date | — |
| Expiry date | Sep 3, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0022
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for producing a voltage for an electric motor of a drive of an electrical switch includes producing a DC link direct voltage from a supply voltage and producing the motor voltage by pulse-width modulation of the direct voltage. A tolerance range for changing the direct voltage is specified, and an actual value of the direct voltage is continually measured. After first measuring the actual value, it is stored in a voltage variable. After each additional measurement, it is checked whether the deviation of the actual from the stored value lies within the tolerance range. The actual value is stored if the deviation from the stored value lies outside of the tolerance range. After each storage, a duty cycle of the pulse-width modulation dependent on the actual value is calculated, and the pulse-width modulation occurs with the duty cycle. A power converter is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.