Motor controller and construction machine provided therewith
US9276512B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 29, 2014 |
| Grant date | Mar 1, 2016 |
| Priority date | — |
| Expiry date | May 29, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P21/22
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is provided a motor controller capable of suppressing the rotation of a motor at the time of discharging an electric accumulator, and a construction machine provided with the motor controller. A motor controller 10 is provided with a current controller 1 for controlling an electric current supplied from an electric accumulator E to a motor M, and a rotation detector 2 for detecting the rotation of the motor M. The current controller 1 supplies only a d-axis current to the motor M according to a discharge command. If the rotation of the motor M is detected by the rotation detector 2 at the time of discharging the electric accumulator E, the current controller 1 controls the d-axis current so as to suppress the rotation of the motor M.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.