Motor control device
US9722528B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 5, 2014 |
| Grant date | Aug 1, 2017 |
| Priority date | — |
| Expiry date | Mar 5, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/34
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor control device includes a power-consumption calculator that calculates a power loss L according to a motor current I or according to the motor current I and a motor velocity v, and calculates a motor output W from a product of the motor velocity v and a torque τ or thrust force, to determine whether a regenerative resistance is in an energized state. When the regenerative resistance is in an energized state, if a total value W+L of the power loss L and the motor output W is equal to or greater than 0 (W+L≧0), the power-consumption calculator calculates a power consumption P as W+L, and if a total value W+L of the power loss L and the motor output W is less than 0 (W+L<0), the power-consumption calculator calculates the power consumption P=0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.