公开(公告)号：US20210159836A1

公开(公告)日：2021-05-27

申请号：US17166646

申请日：2021-02-03

Applicant: Tula eTechnology, Inc.

Inventor： Babak MAZDA ,  Adya S. TRIPATHI ,  Paul CARVELL

IPC: H02P27/08

Abstract: A boost circuit is arranged to reduce rise and fall times of pulsed power used for pulsed control operation of electric machines. Magnetic energy present in the electric machine at the end of a pulse is extracted by the boost circuit to reduce the pulse fall time. The energy is stored by the boost circuit and then applied at the beginning of a subsequent pulse to reduce the rise time. By reducing rise and fall times compared to not using such a boost circuit, machine efficiency is improved.

公开(公告)号：US20240063745A1

公开(公告)日：2024-02-22

申请号：US18452363

申请日：2023-08-18

Applicant: Tula eTechnology, Inc.

Inventor： John W. PARSELS ,  Babak MAZDA

IPC: H02P27/08

CPC classification number: H02P27/085 ,  H02P2201/09

Abstract: A boost circuit and method is described for supplying a boost voltage to a rotor of the electric machine, just as the electric machine is pulsed on, the boost voltage aids the rotor in quickly overcoming its start-up inductance, rapidly turn on the rotor. As a result, much faster transition times are realized each time the electric machine transitions from the off state to the on state at the start of a pulse. By reducing the transition time, the overall efficiency of the electric machine is significantly improved.

公开(公告)号：US20240136968A1

公开(公告)日：2024-04-25

申请号：US18514489

申请日：2023-11-20

Applicant: Tula eTechnology, Inc.

Inventor： Babak MAZDA ,  Adya S. TRIPATHI ,  Paul CARVELL

IPC: H02P27/08

CPC classification number: H02P27/085 ,  H02P2201/09

Abstract: A boost circuit is arranged to reduce rise and fall times of pulsed power used for pulsed control operation of electric machines. Magnetic energy present in the electric machine at the end of a pulse is extracted by the boost circuit to reduce the pulse fall time. The energy is stored by the boost circuit and then applied at the beginning of a subsequent pulse to reduce the rise time. By reducing rise and fall times compared to not using such a boost circuit, machine efficiency is improved.

公开(公告)号：US20240088806A1

公开(公告)日：2024-03-14

申请号：US18362602

申请日：2023-07-31

Applicant: Tula eTechnology, Inc.

Inventor： Paul CARVELL ,  Babak MAZDA

IPC: H02P6/08 ,  H02P21/20

CPC classification number: H02P6/08 ,  H02P21/20 ,  H02P2207/05

Abstract: A pulsed control of an Externally Excited Synchronous Machines (EESM), including a boost circuit and method for (1) harvesting the field energy stored in rotor winding when the EESM is transitioning to the off state following an on pulses, (2) storing the harvested field energy on a storage device, (3) optionally “topping” up the harvested field energy stored on the storage device, and (4) supplying the harvested and stored field energy as a “boost voltage” to the rotor, just as the EESM is transitioning on for the next pulse, the boost voltage aiding the rotor in quickly overcoming it's start-up inductance, rapidly turning on the rotor, resulting in a much faster transition time from the off state to the on state at the start of the next pulse.

公开(公告)号：US20200212834A1

公开(公告)日：2020-07-02

申请号：US16818570

申请日：2020-03-13

Applicant: Tula eTechnology, Inc.

Inventor： Babak MAZDA ,  Adya S. TRIPATHI ,  Paul CARVELL

IPC: H02P27/08

Abstract: A boost circuit is arranged to reduce rise and fall times of pulsed power used for pulsed control operation of electric machines. Magnetic energy present in the electric machine at the end of a pulse is extracted by the boost circuit to reduce the pulse fall time. The energy is stored by the boost circuit and then applied at the beginning of a subsequent pulse to reduce the rise time. By reducing rise and fall times compared to not using such a boost circuit, machine efficiency is improved.