Sensorless control method for motor and system using the same
US9356546B2 · kind B2 · utility
1Cited by
29References
10Claims
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Key dates
| Filing date | Nov 23, 2014 |
| Grant date | May 31, 2016 |
| Priority date | — |
| Expiry date | Jan 6, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/64
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A sensorless control method for a motor performed by a sensorless controller including a back electromotive force (EMF) observer and a phase locked loop (PLL) controller, includes: estimating a back EMF of the motor using the back EMF observer; calculating an electrical angle error in accordance with iron loss of the motor based on the estimated back EMF; and compensating for the calculated electrical angle error, inputting the compensated electrical angle error into the PLL controller to estimate an actual angle, and controlling the motor based on the estimated actual angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.