Motor device for a switch drive of an electric switch
US11164704B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 5, 2017 |
| Grant date | Nov 2, 2021 |
| Priority date | — |
| Expiry date | May 10, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2003/266
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor assembly for a switch drive of an electric switch. The motor assembly has a brushless three-phase motor and an electronic control device for controlling the three-phase motor. The control device has a rectifier unit for rectifying a supply voltage of the motor assembly if the supply voltage is an AC voltage, and for reverse polarity protection if the supply voltage is a DC voltage. The control device also has a voltage measuring unit for detecting a rectifier output voltage of the rectifier unit, a switch unit for generating a pulse width-modulated drive AC voltage for the three-phase motor from the rectifier output voltage, and a control unit for actuating the switch unit according to the rectifier output voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.