Brushless motor control apparatus having overheat protecting function
US7102314B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 8, 2005 |
| Grant date | Sep 5, 2006 |
| Priority date | — |
| Expiry date | Feb 8, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A brushless motor control apparatus detects a phase current flowing in a brushless motor, converts the phase current to a vector current including a d-axis current of a magnetic flux direction component and a q-axis current of a torque direction component orthogonal to the d-axis current, calculates a vector voltage instruction value based on differences between a vector current and a vector current instruction value, calculates a phase voltage instruction value and controls rotation of the brushless motor based on the phase voltage instruction value. The apparatus further calculates electric power produced in the brushless motor and protects the brushless motor based on the magnitude of electric power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.