公开(公告)号：US20220170416A1

公开(公告)日：2022-06-02

申请号：US17674719

申请日：2022-02-17

Applicant: Kohler Co.

Inventor： Isaac S. Frampton ,  Adam Larson ,  Frank C. Formas

IPC: F02B63/04 ,  H02K9/19 ,  H02P9/30 ,  H02K7/18 ,  H02K19/28 ,  H02K19/38

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.

公开(公告)号：US11264918B2

公开(公告)日：2022-03-01

申请号：US16208855

申请日：2018-12-04

Applicant: Kohler Co.

Inventor： Adam Larson ,  Isaac S. Frampton

IPC: H02M7/5395 ,  H02M1/00 ,  H02M7/5387 ,  H02M7/48 ,  H02M1/38 ,  H02M5/458 ,  H02P27/06 ,  H02P9/30

Abstract: An isolated bus inverter system including inverter circuits and a controller. The inverter circuits include a switching array to provide a polyphase alternating current (AC) signal to an output. Each of the inverter circuits includes an energy source isolated from the other inverter circuits of the inverter circuits or a reference isolated from the other inverter circuits of the inverter circuits. The controller is configured to generate timing signals for the inverter circuits to generate the AC signals for the output based on DC signals received from one or more rectifier circuits.

公开(公告)号：US20210265889A1

公开(公告)日：2021-08-26

申请号：US17166746

申请日：2021-02-03

Applicant: Kohler Co.

Inventor： Isaac S. Frampton ,  Adam Larson

IPC: H02K3/26 ,  H02K1/27 ,  H02K15/04 ,  H02K21/24

Abstract: An electric machine includes a plurality of permanent magnets and a plurality of conductors. The plurality of permanent magnets are arranged radially around a rotation axis of the electric machine and spaced apart from the rotation axis of the electric machine. At least one of the plurality of magnets has a shape in a plane of rotation intersected by the rotation axis. The plurality of conductors are arranged relative to the plurality of magnets and spaced apart from each other circumferentially around the rotation axis of the electric machine. At least one of the plurality of conductors includes a trace having a polygon shape different than the shape of the at least one of the plurality of magnets.

公开(公告)号：US20210152106A1

公开(公告)日：2021-05-20

申请号：US17127484

申请日：2020-12-18

Applicant: Kohler Co.

Inventor： Isaac S. Frampton ,  Adam Larson

IPC: H02P5/74 ,  H02M5/27 ,  H02K19/26 ,  H02P9/42 ,  B60L1/00 ,  H02P27/08 ,  H02P27/16 ,  H02P9/14 ,  H02J7/00 ,  H02J7/14 ,  B60L58/10 ,  H02J7/24 ,  H02J7/02

Abstract: An apparatus includes a first inverter circuit and a second inverter circuit. The first invertor circuit is configured to couple an alternator and a load device to deliver a driving signal from the alternator to the load device. The second invertor circuit is configured to couple the alternator to the load device to deliver a driving signal from the alternator to the load device and configured to couple a battery to the alternator to deliver a charging signal from the alternator the battery

公开(公告)号：US20190211746A1

公开(公告)日：2019-07-11

申请号：US16353679

申请日：2019-03-14

Applicant: Kohler Co.

Inventor： Isaac S. Frampton ,  Adam Larson ,  Frank C. Formas

IPC: F02B63/04 ,  H02K19/38 ,  H02K7/18 ,  H02P9/30 ,  H02K19/28 ,  H02K9/19

CPC classification number: F02B63/042 ,  H02K1/182 ,  H02K7/1815 ,  H02K9/005 ,  H02K9/19 ,  H02K9/22 ,  H02K19/28 ,  H02K19/38 ,  H02K2201/03 ,  H02P9/302

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.

公开(公告)号：US10273876B2

公开(公告)日：2019-04-30

申请号：US14732829

申请日：2015-06-08

Applicant: Kohler Co.

Inventor： Isaac S. Frampton ,  Adam Larson ,  Frank C. Formas

IPC: H02K19/38 ,  F02B63/04 ,  H02K9/19 ,  H02P9/30 ,  H02K7/18 ,  H02K19/28 ,  H02K1/18 ,  H02K9/00 ,  H02K9/22

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.

公开(公告)号：US10256758B2

公开(公告)日：2019-04-09

申请号：US15863509

申请日：2018-01-05

Applicant: Kohler Co.

Inventor： Isaac S. Frampton ,  Adam Larson

IPC: H02K3/26 ,  H02K7/18 ,  H02P9/00 ,  H02P9/04 ,  H02K11/042 ,  H02P9/14 ,  H02P9/30 ,  H02P9/48 ,  H02K19/38 ,  H02P101/45

Abstract: In one embodiment, a generator includes a rotor configured to rotate in cooperation with a stator to generate electrical power. An exciter of the generator includes at least one circuit board, a stationary exciter stator, and a control circuit. The circuit board is mechanically coupled to a rotor of the generator and includes at least one coil of an electrical conductor. The stationary exciter stator is configured to induce a current in the at least one coil of the at least one circuit board. The control circuit is configured to modify the current from the at least one coil and provide the modified current to a field of the generator.

公开(公告)号：US20180131301A1

公开(公告)日：2018-05-10

申请号：US15863503

申请日：2018-01-05

Applicant: Kohler Co.

Inventor： Isaac S. Frampton ,  Adam Larson ,  Richard Van Maaren

IPC: H02P9/00 ,  H02P9/48 ,  H02P9/30 ,  H02P9/14 ,  H02P9/04 ,  H02K7/18

CPC classification number: H02P9/00 ,  H02K7/1815 ,  H02P9/009 ,  H02P9/04 ,  H02P9/14 ,  H02P9/302 ,  H02P9/48 ,  H02P2101/45

Abstract: In one embodiment, a generator includes a rotor configured to rotate in cooperation with a stator to generate electrical power. A sensor, which is supported by the rotor, is configured to generate a trigger signal indicative of a position of the rotor. A communication interface is configured to receive the trigger signal from the sensor of the rotor and receive data indicative of an output of the generator. A controller supported by the rotor or configured to perform a phase analysis of the trigger signal and the output of the generator and calculate a power angle for the generator based on the phase analysis.

公开(公告)号：US20170110996A1

公开(公告)日：2017-04-20

申请号：US14885112

申请日：2015-10-16

Applicant: Kohler Co.

Inventor： Isaac S. Frampton ,  Adam Larson

IPC: H02P9/30 ,  H02P9/08

CPC classification number: H02P9/30 ,  H02P9/08 ,  H02P9/48 ,  H02P25/22

Abstract: A generator or another type machine includes a controlled field alternator, a segmented waveform converter, and a controller. The controlled field alternator is configured to generate a polyphase signal. The segmented waveform converter includes multiple switches connected between the polyphase signal of the controlled field alternator and an output filter. The controller is configured to provide a control signal for the switches based on measured electrical quantities associated with the output filter and provide a field current control signal to the controlled field alternator.

公开(公告)号：US20170110976A1

公开(公告)日：2017-04-20

申请号：US15175761

申请日：2016-06-07

Applicant: Kohler Co.

Inventor： Isaac S. Frampton ,  Adam Larson ,  Terrence Rotter

IPC: H02M5/458 ,  A01D69/02 ,  H02J50/10 ,  B60R16/023 ,  H02J7/14 ,  H02P9/30

CPC classification number: H02J50/10 ,  H02J7/1492 ,  H02M1/126 ,  H02M3/158 ,  H02M5/297 ,  H02M7/219 ,  H02M2001/007 ,  H02M2001/0077 ,  H02M2001/008 ,  H02P9/30 ,  H02P9/48

Abstract: An apparatus includes a controlled field alternator or utility source of electrical power, a segmented waveform converter, and a controller. The source of electrical power is configured to generate a polyphase signal. The synchronous inverter includes multiple switches connected between the polyphase signal of the source of electrical power and an output filter. The controller is configured to provide a control signal for the switches based on measured electrical quantities associated with the output filter and may provide a field control signal to the controlled field alternator. The apparatus may be applied to a vehicle, a lawnmower, a zero turn radius lawnmower, or another type of machine.