Method of detecting forward and reverse connection of three-phase motor and solid-state motor starter
US12407278B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2023 |
| Grant date | Sep 2, 2025 |
| Priority date | — |
| Expiry date | May 15, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P1/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of detecting forward and reverse connection of a three-phase motor is disclosed, including: turning on a first solid-state switch pair and a second solid-state switch pair into conduction for a predetermined period of time so that current can flow between a power supply and the three-phase motor; detecting output current of a solid-state motor starter; and determining the forward and reverse connection state of the three-phase motor based on the output current of the solid-state motor starter, in a case that currents exist at a first output terminal and a second output terminal, it is determined that the three-phase motor is in the forward connection state, and in a case that currents exist at the first output terminal and a third output terminal, it is determined that the three-phase motor is in the reverse connection state. Furthermore, a solid-state motor starter is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.