Parallel use of soft starters
US10804836B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 16, 2016 |
| Grant date | Oct 13, 2020 |
| Priority date | — |
| Expiry date | Oct 22, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/60
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system for controlling an AC motor is provided. The system comprises an electrical connection path for connecting an electrical input of the AC motor to a first phase of alternating current from an electric power supply. The system also comprises two or more motor controllers, each motor controller is located on the electrical connection path between the electric power supply and the AC motor and is operable to regulate current of the first phase passing through it. Each motor controller is connected in parallel, relative to the other motor controllers, to the electrical connection path. At least one processor is configured to control the motor controllers to repeatedly change which of the motor controllers current of the first phase passes through, such that at any given time current of the first phase only passes through one of the motor controllers. A corresponding method is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.