Motor controller having low standby power consumption
US11239776B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2019 |
| Grant date | Feb 1, 2022 |
| Priority date | — |
| Expiry date | Mar 21, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S20/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor controller having low standby power consumption is provided. The motor controller includes a direct current (DC) bus. The motor controller also includes a low-power supply. The motor controller also includes an inverter configured to control a supply of current to stator windings of a motor. The motor controller also includes a switch circuit coupled between the DC bus and the low-power supply. The motor controller also includes a switch controller coupled to the switch circuit and configured to be coupled to a system controller. The switch controller is configured to control the switch circuit to electrically decouple, in response to detecting an absence of a control signal from the system controller, the DC bus from the low-power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.