Hybrid gas turbine engine starter-generator
First Claim
Patent Images
1. A gas turbine engine starter-generator, comprising:
- a housing;
a main rotor rotationally mounted within the housing; and
a main stator mounted within the housing and at least partially surrounding at least a portion of the main rotor, the main stator selectively configurable as an M-pole AC stator or an N-pole DC stator, M and N each integers greater than one,wherein;
when the main stator is configured as the M-pole, multi-phase AC stator, each phase consists of two or more stator winding circuits electrically coupled in parallel with one another, andwhen the main stator is configured as the N-pole DC stator, the stator winding circuits associated with each phase are directly connected in series with one another.
1 Assignment
0 Petitions
Accused Products
Abstract
A rotating electrical machine, such as an aircraft starter-generator, that may be operated in either a DC motor mode or an AC generator mode. The machine includes a conventionally wound main stator that is selectively configurable as a multi-pole AC stator and a multi-pole DC stator. The machine also includes rotor windings that are configured to be selectively coupled to either an exciter or a plurality of commutator segments, and DC brushes that are selectively moveable into, and out of, electrical contact with the commutator segments, to thereby electrically couple and decouple a DC power source to and from, respectively, the rotor windings.
59 Citations
15 Claims
-
1. A gas turbine engine starter-generator, comprising:
-
a housing; a main rotor rotationally mounted within the housing; and a main stator mounted within the housing and at least partially surrounding at least a portion of the main rotor, the main stator selectively configurable as an M-pole AC stator or an N-pole DC stator, M and N each integers greater than one, wherein; when the main stator is configured as the M-pole, multi-phase AC stator, each phase consists of two or more stator winding circuits electrically coupled in parallel with one another, and when the main stator is configured as the N-pole DC stator, the stator winding circuits associated with each phase are directly connected in series with one another. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A stator, comprising:
-
a main stator body; a plurality of stator coils wound around at least a portion of the main body in a configuration that allows the stator to be selectively configured as an M-pole AC stator or an N-pole DC stator, M and N each integers greater than one, wherein; when the stator is configured as the M-pole AC stator, each phase consists of two or more stator winding circuits electrically coupled in parallel with one another, and when the stator is configured as the N-pole DC stator, the stator winding circuits associated with each phase are directly connected in series with one another. - View Dependent Claims (12, 13, 14, 15)
-
Specification