Methods and systems for envelope and efficiency control in an electric motor
US9641115B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 23, 2013 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | Jan 24, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P21/24
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An air moving system including an electric motor, a load coupled to the electric motor, and a motor drive controller coupled to the electric motor is provided. A DC voltage generated from an AC input voltage provided to the electric motor tends towards zero at about twice a frequency of the AC input voltage. The motor drive controller includes an adjustment control module configured to receive a measurement of an instantaneous motor current value for the electric motor, determine a flux component value based on the instantaneous motor current value, and determine, based at least in part on the flux component value and a flux component demand value, an adjusted flux component demand value that causes the motor drive controller to adjust an operation such that an average flux component value based on the flux component value is substantially similar to the flux component demand value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.