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：US20220416707A1

公开(公告)日：2022-12-29

申请号：US17840116

申请日：2022-06-14

Applicant: Tula eTechnology, Inc.

Inventor： Zhiqian CHEN

IPC: H02P25/08 ,  H02K1/278 ,  H02K3/12 ,  H02K3/28

Abstract: Methods, controllers and electric machine systems are described for selective phase control of electric machines (e.g. electric motors and generators).