Control method for breaking an electric motor
US10199961B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2017 |
| Grant date | Feb 5, 2019 |
| Priority date | — |
| Expiry date | Aug 4, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P3/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control method brakes an electric motor connected to a voltage source. The method involves, in each cycle, the supply of current to the motor, with a delay tret, at an angle α. The method includes a sequence such that, for every n cycle, the following steps are executed: a) determining the value of a variation in the resistance of the motor during the preceding n cycles of the voltage, b) comparing the value of the variation in resistance with a threshold resistance value Rt, c) increasing in the delay tret if the value of the variation in resistance is lower than the threshold resistance value. The increase in the delay tret is executed in accordance with a gamma command, where the angle α lies between 50° and 80°.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.