Method of optimizing system efficiency for battery powered electric motors
US11673476B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 29, 2022 |
| Grant date | Jun 13, 2023 |
| Priority date | — |
| Expiry date | Apr 29, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60L2240/547
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method of controlling an electric motor to optimize system efficiency of an electric motor operable in a pulsed mode and a continuous mode is disclosed herein. The method includes receiving a requested torque for the electric motor, calculating a pulsed system efficiency, calculating a continuous system efficiency, and operating the electric motor in the pulsed mode when the pulsed system efficiency is greater than the continuous system efficiency. The pulsed system efficiency is calculated for delivering the requested torque from the electric motor in a plurality of torque pulses greater than the requested torque. The continuous system efficiency is calculated for delivering the requested torque from the electric motor as a continuous torque. The system efficiency may be at least partially based on a battery efficiency and a motor efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.