Reduction of harmonics in AC machines
US6577487B2 · kind B2 · utility
5Cited by
265References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 27, 1998 |
| Grant date | Jun 10, 2003 |
| Priority date | — |
| Expiry date | May 5, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E40/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Connection arrangements are employed for reducing the effect of third-hannonic voltages in case of direct connection of AC machines to a three-phase distribution or transmission network, wherein the stator winding of the AC machine is Y-connected and wherein the neutral point of the winding is available. An exemplary embodiment employs a suppression filter turned to the third-harmonic, with an overvoltage protection device arranged between the neutral point and ground of the power network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.