Identification method and identification device for identifying type of brushless DC motor, and brushless DC motor
US11283377B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 6, 2018 |
| Grant date | Mar 22, 2022 |
| Priority date | — |
| Expiry date | Mar 13, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/28
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An identification method includes supplying a motor power supply voltage from an identification device to a brushless DC motor via a power line, receiving the supply of the power supply voltage to rotate the brushless DC motor in accordance with a Pulse Width Modulation (PWM) signal output from a drive circuit of the brushless DC motor, superimposing an identification signal with a same frequency as that of the PWM signal on a power supply current flowing through the power line upon rotation of the brushless DC motor, acquiring the power supply current flowing through the power line, detecting the frequency of the identification signal superimposed on the power supply current, and identifying information about the brushless DC motor based on the detected frequency of the identification signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.