Device for driving a plurality of motors and electric apparatus including the same
US11705832B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2022 |
| Grant date | Jul 18, 2023 |
| Priority date | — |
| Expiry date | May 13, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2209/01
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device for driving a plurality of motors, including an inverter connected to a DC terminal; a multi-phase motor connected to the inverter; and a single-phase motor serially connected to the multi-phase motor, wherein a number of frequency of current input to the multi-phase motor when driving the single-phase motor and the multi-phase motor at the same speed is smaller than the number of frequency of current input to the multi-phase motor when driving the single-phase motor and the multi-phase motor at different speeds. Accordingly, a plurality of motors can be simultaneously driven at different speeds, by using a single inverter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.