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公开(公告)号：US20230318496A1
公开(公告)日：2023-10-05
申请号：US18330561
申请日：2023-06-07
Applicant: Kohler Co.
Inventor： Isaac S. FRAMPTON , Adam LARSON , Jonathan BYKOWSKI
IPC: H02P7/00
CPC classification number: H02P7/0094
Abstract: An electric machine includes a rotor, a stator, at least one measurement circuit, and a controller. The rotor includes a plurality of salient poles arranged radially around a rotation axis of the electric machine and spaced apart from the rotation axis of the electric machine. The stator includes a plurality of coils configured to selectively align with the plurality of salient poles of the rotor. The at least one measurement circuit is configured to measure at least one current through at least one of the plurality of coils. The measured current includes a current ripple. The controller is configured to compute a position of the rotor based on a characteristic of the current ripple.
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公开(公告)号：US20240141827A1
公开(公告)日：2024-05-02
申请号：US18408354
申请日：2024-01-09
Applicant: Kohler Co.
Inventor： Isaac S. FRAMPTON , Adam Larson , Frank C. Formas
CPC classification number: F02B63/042 , H02K7/1815 , H02K9/19 , H02K19/28 , H02K19/38 , H02P9/302 , H02K1/182
Abstract: An alternator includes an exciter field device generating an exciter magnetic field in a first air gap, an exciter armature device configured to rotate with respect to the 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, and a rotor field device configured to be energized by the first 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. 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.
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