Method and device for setting the short circuit moment in electric motors, particularly in servomotors
US5347214A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 8, 1992 |
| Grant date | Sep 13, 1994 |
| Priority date | — |
| Expiry date | Sep 8, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and a device are proposed for setting the short circuit moment in electric motors, particularly in servomotors. for this purpose, the actual short circuit moment of the electric motor is measured and compared with a predetermined short circuit moment. Then the set short circuit current required to attain the desired moment is calculated. A predetermined value for the set short circuit current, which is a function of the calculated value, is then stored in an electronic control device for the electric motor. For this purpose, the device includes a memory in the control device for storing the predetermined set value. In this way it is possible in a simple and economical manner to equip even motors that are produced in manufacturing series and in which greater component tolerances exist, with a short circuit moment that lies within a narrow tolerance range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.