Patent · US Expired

Electrical machine with reduced audible noise

US6208057A · kind A · utility

3Cited by
8References
10Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 28, 1998
Grant dateMar 27, 2001
Priority date
Expiry dateDec 28, 2018

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH02K3/28
  • WIPO fieldElectrical machinery, apparatus, energy
  • WIPO sectorElectrical engineering

Abstract

An electrical machine includes one or more multiple-phase electrical power windings and an auxiliary winding. The auxiliary winding when closed generates electromagnetic fields which partially cancel fields generated during the operation of the electrical machine. The result is reduced audible noise from the electrical machine.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.