Motor drive device, electric blower, electric vacuum cleaner, and hand dryer
US11863104B2 · kind B2 · utility
0Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2018 |
| Grant date | Jan 2, 2024 |
| Priority date | — |
| Expiry date | May 26, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P27/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor drive device includes a single-phase inverter converting a direct-current voltage output from a power supply that is a direct-current power supply into an alternating-current voltage having a high level, low level, or zero level potential. The inverter outputs the alternating-current voltage as a motor applied voltage to be applied to a motor. The alternating-current voltage is a voltage that has a high level, low level, or zero level potential. When a rotation speed of the motor is to be reduced, a section in which a potential of the motor applied voltage is zero level is widened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.