公开(公告)号：US20230308040A1

公开(公告)日：2023-09-28

申请号：US18184569

申请日：2023-03-15

Applicant: Tula eTechnology, Inc.

Inventor： Philippe FARAH ,  Paul CARVELL

IPC: H02P27/08 ,  H02P23/30 ,  H02P25/022

CPC classification number: H02P27/08 ,  H02P23/30 ,  H02P25/022

Abstract: An electric machine is provided. A power converter is coupled between a power supply and a wound field synchronous machine. The power converter is arranged to provide a pulsed operation by providing a pulsed DC current to field windings of the wound field synchronous machine.

公开(公告)号：US20240063735A1

公开(公告)日：2024-02-22

申请号：US18452260

申请日：2023-08-18

Applicant: Tula eTechnology, Inc.

Inventor： Zakirul ISLAM ,  Paul CARVELL ,  Philippe FARAH

IPC: H02P7/298

CPC classification number: H02P7/298

Abstract: An electric machine, comprising a power supply and an electrically excited synchronous machine is provided. The electrically excited synchronous machine comprises a stator with stator windings, a rotor, comprising rotor poles with field windings and a plurality of permanent magnets magnetically connected to the rotor pole. A power converter is coupled between the power supply and the electrically excited synchronous machine, the power converter is arranged to provide a pulsed operation by providing a pulsed AC current to the stator windings and a pulsed DC current to the rotor field windings, wherein the pulsed DC current to the rotor field windings causes the rotor poles to have a magnetic orientation that has a same magnetic orientation as the permanent magnets magnetically connected to the rotor poles.

公开(公告)号：US20250055397A1

公开(公告)日：2025-02-13

申请号：US18756619

申请日：2024-06-27

Applicant: Tula eTechnology, Inc.

Inventor： Zhiqian CHEN ,  Philippe FARAH ,  John W. PARSELS

IPC: H02P25/022 ,  H02K11/04 ,  H02K11/33

Abstract: An electric machine is provided. A transformer comprises a magnetic coupling. A wound field synchronous machine comprises a rotor winding, a secondary circuit of the transformer electrically connected to the rotor winding, and a stator winding. The secondary circuit comprises a secondary winding, a rectifier electrically, a switch for switching voltage between the rotor winding and the rectifier in a first direction, and an energy storage arranged to store energy provided by the rectifier and the rotor winding and provide a voltage to the rotor winding in a second direction. A power converter is coupled between the power supply and the wound field synchronous machine. The power converter comprises a stator winding power supply arranged to provide multiple phase AC excitation to the stator winding and a primary circuit of the transformer comprising a primary winding arranged to provide AC power to the primary winding.

公开(公告)号：US20240063744A1

公开(公告)日：2024-02-22

申请号：US18452050

申请日：2023-08-18

Applicant: Tula eTechnology, Inc.

Inventor： Zakirul ISLAM ,  Paul CARVELL ,  Philippe FARAH

IPC: H02P27/08

CPC classification number: H02P27/085

Abstract: An electric machine comprising a power supply and an electrically excited synchronous machine is provided. The electrically excited synchronous machine comprises a stator with stator windings and a rotor with a plurality of rotor poles, wherein the rotor has a magnetic field knee region and rotor field windings around the plurality of rotor poles. A power converter is coupled between the power supply and the electrically excited synchronous machine. The power converter is arranged to provide a pulsed operation by providing a pulsed current to the stator windings and a pulsed DC current to the rotor field windings, wherein the pulsed DC current continuously provides a magnetic field in the rotor.