US 11,936,252 B2
Exciter windings for wide speed operation
Andreas C. Koenig, Rockford, IL (US); and Dhaval Patel, Schaumburg, IL (US)
Assigned to Hamilton Sundstrand Corporation (HSC), Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on Jul. 8, 2021, as Appl. No. 17/370,851.
Prior Publication US 2023/0012092 A1, Jan. 12, 2023
Int. Cl. H02K 11/33 (2016.01); H02K 1/16 (2006.01); H02K 3/12 (2006.01); H02K 7/00 (2006.01)
CPC H02K 11/33 (2016.01) [H02K 1/16 (2013.01); H02K 3/12 (2013.01); H02K 7/003 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An exciter comprising:
a stator armature defining a plurality of circumferentially spaced apart winding slots separated by respective stator teeth;
a first exciter winding, wherein individual windings of the first exciter winding are seated in the winding slots;
a second exciter winding, wherein individual windings of the second exciter winding are seated in the winding slots; and
wherein for each phase of each of the first and second exciter windings there are two leads configured to connect to a generator control unit (GCU), wherein a main machine is electrically connected to a power bus through a main machine output line, wherein the generator control unit includes a power supply, a controller, and a converter, wherein the controller is configured to receive input from the main machine output line, wherein the controller is configured to switch between the first exciter winding and a second exciter winding for power conversion based on the input received from the main machine output line, wherein the first exciter winding is used at a first shaft speed and the second exciter winding is used at a second shaft speed, the first speed being different than the second speed.