Adaptive system for optimizing excitation current waveform profiles for electric motors
US7312592B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Apr 26, 2004 |
| Grant date | Dec 25, 2007 |
| Priority date | — |
| Expiry date | Dec 21, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P27/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An adaptive control system for an electric motor has energization circuitry connected to phase windings of the motor for energization thereof and a controller for generating a control signal corresponding to a profile of an excitation current. The control signal is applied to the energization circuitry to control energization of the phase windings. The energization circuitry provides the excitation current to the phase windings from a power supply. For a present combination of torque and speed, the controller adaptively determine the profile of the excitation current optimal for achieving a particular motor control objective. Excitation current profiles may be optimized to achieve maximum efficiency, maximum torque, minimum torque ripple, minimum core loss, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.