Systems and methods for operating a linear motor to prevent impacts with hard stops
US10487632B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2018 |
| Grant date | Nov 26, 2019 |
| Priority date | — |
| Expiry date | May 10, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P3/20
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Systems and methods for operating a linear motor (e.g., for an ESP), where the motor's mover moves in a reciprocating motion within a bore of the stator. Hard stops are located at the ends of the bore. The motor has a first set of sensors in the stator positioned proximate to the bore. When the mover moves in the bore, the sensors produce corresponding output signals, except when the mover is in a position near, but not in contact with a hard stop. While the sensors produce output signals, the motor is driven in a first direction toward the hard stop. When the sensors stop producing the output signals, the mover has reached the first position, and the motor is controlled to reverse the direction of the mover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.