Control apparatus and motor
US11139761B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2019 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Dec 31, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/0016
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control apparatus includes a controller that controls a motor, a first transmission channel connected to a first power-supply terminal of an alternating-current source that supplies an alternating-current voltage, a second transmission channel connected to a second power-supply terminal of the alternating-current source, and a third transmission channel connected to each of the first transmission channel and the second transmission channel. The controller switches the rotational speed of the motor based on the voltage value of a signal input to the controller in accordance with a first connection status of the first transmission channel and the third transmission channel and a second connection status of the second transmission channel and the third transmission channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.