Method and apparatus for controlling electric motor
US7859207B2 · kind B2 · utility
15Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2008 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | Jul 24, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/68
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for controlling a motor current supplied to an electric motor by using an inverter device is provided. The inverter device includes an inverter circuit and a capacitor connected to an input of the inverter circuit. The method includes controlling the inverter circuit in such a manner as to supply an alternating electric current to the electric motor after the temperature of the capacitor reaches a temperature at which a maximum acceptable motor current value becomes greater than or equal to a value at which the torque necessary for starting the electric motor is produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.