Patent ID: 11905878
Assignee: KOHLER CO.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F  H | IPC F  H

Claim 12:
13. An engine-generator apparatus comprising:
an exciter field device generating a rotating exciter magnetic field in a first air gap;
an exciter armature device configured to rotate with respect to the rotating exciter magnetic field and impart a first voltage in a first set of coils at the first air gap;
a main stator device including a second set of coils;
a rotor field device configured to be energized by a field current in the first set of coils and generate a main magnetic field that imparts a second voltage on the main stator device at a second air gap; and
a controller configured to output a generator voltage of the generator in response to the main magnetic field as a function of at least a rotating speed of the rotating exciter magnetic field,
wherein the generator voltage of the generator is independent of a speed of the engine,
wherein the main stator device and the exciter field device lie in on a common plane normal to an axis of rotation and the exciter armature device is inwardly spaced from the exciter field device, main stator device, and the rotor field device; and
wherein the rotor field device is radially outward of the exciter armature device, the exciter field device, and the main stator device.