Ford Motor Company Limited

Visteon Global Technolgoies, Inc.

Kollmorgen Corporation

Kolimorgen Corporation

Roy David Schultz

Thomas R England

A Clark Altizer

Shawn Harold Swales

Robert Joseph Mohan

Paul Michael Evans

David W Sirois

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.

Electrical machine with reduced audible noise

In several embodiments of the present invention, an alternator is disclosed. The alternator includes a rotor having both wound-field and permanent magnet poles. The wound-field and permanent magnet poles are disposed about the circumference of the rotor.

Rotating electrical machine with electromagnetic and permanent magnet

An automotive power control system which delivers a regulated voltage to a load circuit during normal operation and which delivers maximum power when the demand exceeds the alternator's ability to supply adequate current to the load. A duty-cycle- controlled DC-to-DC voltage converter reduces the alternator voltage to a level appropriate for charging the system battery and supplying low voltage loads. When the rotational speed of the alternator is adequate to generate sufficient load current, the voltage converter operates under the control of a first feedback circuit which compares the converter's output load voltage with a reference potential to generate an error signal which regulates the output voltage to a desired level. When the output voltage falls below that desired level, a speed signal indicative of the speed at which the alternator is rotating is used to generate a control signal which is applied to the switching converter to vary the alternator output voltage and maximize the power obtained from the alternator at the sensed rotational speed.

Control system for a vehicle electrical system

A dynamoelectric machine having a large magnetic gap between the rotor and the stator includes a slotless stator windings located within the large magnetic gap, and a mgnetic assembly consisting of radially aligned permanent magnets separated by non-magnetic material. The magnetic pole circumferential length and the radial gap length are proportioned such that the permanent magnets are operated at or near their maximum energy product.

Servo motor with high energy product magnets

A method of making an electric motor with the stator winding inside a slotless cylindrical stator shell.

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Dearborn, MI, United States of America

Roy David Schultz