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US 6,208,057 B1Granted
Electrical machine with reduced audible noise
AssigneeVisteon Global Technologies, Inc.
InventorsRoy David Schultz, Shawn Swales
Life of this patent
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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.
Claims10
An electrical machine comprising:
- a rotor;
- a stator disposed in opposition to said rotor, said stator further comprising one or more multiple-phase electrical power windings coupled to receive or provide electrical power, and an auxiliary electrical winding having a plurality of turns and further having a first end and a second end;
- switching means coupled to said first end and said second end to switchably connect said first end and said second end;
- wherein said rotor has “n” magnetic poles;
- and
- said auxiliary electrical winding is an “m•n”-pole winding, where “m” and “n” are integers.
3 more elements
Dependencies are inferred from the claim text.