Device for disconnecting a neutral point of a motor
US6577086B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 19, 2001 |
| Grant date | Jun 10, 2003 |
| Priority date | — |
| Expiry date | Mar 22, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S388/903
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit for disconnecting a neutral point of an electric machine includes an inductance connected to a lead of the electric machine; a three-terminal solid-state switch that has a first terminal connected to the inductance, a second terminal connected to the neutral point, and a third terminal for controlling a flow of current between the first and second terminals; a controlling circuit coupled to the three-terminal solid-state switch that includes a first loop that has a power source, a resistance, and a voltage regulator to maintain a first voltage upon the third terminal, and a second loop that has a power source, a resistance, and a trigger switch being controllably switched on to thereby close the first loop whereby a second voltage is applied to the three-terminal solid-state switch to thereby substantially electrically disconnect the first terminal from the second terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.