Motor drive device for washing machine and motor control method thereof
US9392925B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 26, 2012 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | Feb 27, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B40/00
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Provided is a motor drive device for a motor for a washing machine of a double-rotor/double-stator structure that can selectively rotate a pulsator and a dehydrator without having a separate clutch, and a motor control method thereof. The motor drive device includes: a motor controller that generates a drive signal according to a laundry control signal to thus control a motor for the washing machine to be driven: an inverter that generates three-phase alternating-current (AC) power under the control of the motor controller, and outputs the three-phase AC power to a first three-phase stator coil for rotating an outer rotor in the motor for the washing machine, and a second three-phase stator coil for rotating an inner rotor therein; and a rotor drive controller that is provided between the inverter and the second three-phase stator coil, to thus block or pass the three-phase AC power under the control of the motor controller and simultaneously change the direction of rotation of the inner rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.