A rotary electric machine includes a stator with a stator winding, a rotor with a field winding supported for rotation about a rotation axis relative to the stator, and an excitation winding. The excitation winding is fixed relative to the rotor and is electrically connected to the field winding. The rotor defines a coolant channel having an inlet and an outlet. Liquid coolant enters the inlet and flows outwardly through a portion of the excitation winding to conduct heat away from the excitation winding. Generators, aircraft electrical systems, and methods of cooling rotary electric machines are also described.
Rotary electric machines and methods of cooling rotary electric machines
2021-06-15
Patent
Electronic Resource
English
ROTARY ELECTRIC MACHINES AND METHODS OF COOLING ROTARY ELECTRIC MACHINES
European Patent Office | 2020
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