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1.发明公开公开(公告)号：US20240022197A1
公开(公告)日：2024-01-18
申请号：US18200264
申请日：2023-05-22
Applicant: Tula eTechnology, Inc.
Inventor： Paul Carvell , Philippe Farah
IPC: H02P27/08
CPC classification number: H02P27/085
Abstract: A method of controlling an electric machine having a separately excitable rotor and stator includes pulsing the electric machine and controlling the electric machine to an OFF state. Pulsing the electric machine includes exiting the rotor with direction current and the stator with a stator biasing current at the same time to generate magnetic flux in the rotor via two separate paths. Pulsing the electric machine may also include terminating the stator basing current when a desired magnetic flux is generated in the rotor. Pulsing the electric machine may include proving a stator flux to the stator such that the electric machine provides a pulse torque.
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公开(公告)号：US11088644B1
公开(公告)日：2021-08-10
申请号：US17188189
申请日：2021-03-01
Applicant: Tula eTechnology, Inc.
Inventor： Paul Carvell
Abstract: A variety of methods, controllers and electric machine systems are described that facilitate pulsed control of electric machines to improve the energy efficiency of the electric machine when conditions warrant. Selected transitions between pulsing output levels are controlled to provide a cubic or higher order transition torque profile. In various implementations, cubic, quintic or higher order transition profiles are use. The use of such transition torque profiles can improve NVH characteristics of the electric machine while providing energy efficient pulse transitions.
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3.发明公开公开(公告)号：US20240195342A1
公开(公告)日：2024-06-13
申请号：US18543777
申请日：2023-12-18
Applicant: Tula eTechnology, Inc.
Inventor： Paul Carvell , Philippe Farah
IPC: H02P27/08
CPC classification number: H02P27/085
Abstract: A method of controlling an electric machine having a separately excitable rotor and stator includes pulsing the electric machine and controlling the electric machine to an OFF state. Pulsing the electric machine includes exiting the rotor with direction current and the stator with a stator biasing current at the same time to generate magnetic flux in the rotor via two separate paths. Pulsing the electric machine may also include terminating the stator basing current when a desired magnetic flux is generated in the rotor. Pulsing the electric machine may include proving a stator flux to the stator such that the electric machine provides a pulse torque.
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公开(公告)号：US20240063740A1
公开(公告)日：2024-02-22
申请号：US18219193
申请日：2023-07-07
Applicant: Tula eTechnology, Inc.
Inventor： Paul Carvell , Siyu Leng , Zakirul Islam
CPC classification number: H02P23/0022 , G06F30/20
Abstract: A method of predicting torque modulation parameters of an electric machine based on operating conditions of the electric machine includes generating a data set for torque modulation parameters of an electric machine for the different operating conditions of the electric machine. The method also includes relating the torque modulation parameters to the operating conditions of the electric machine with a model and loading the model into a controller of the electric machine. The method also includes predicting the torque modulation parameters of the electric machine for the operating conditions of the electric machine using the model in real-time. The method may include adjusting the torque modulation parameters of the electric machine based on the predicted torque modulation parameters.
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公开(公告)号：US12278581B2
公开(公告)日：2025-04-15
申请号：US18184569
申请日：2023-03-15
Applicant: Tula eTechnology, Inc.
Inventor： Philippe Farah , Paul Carvell
IPC: H02K3/28 , H02P23/30 , H02P25/022 , H02P27/08
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.
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Patent Agency Ranking
公开(公告)号：US12206346B2
公开(公告)日：2025-01-21
申请号：US18318193
申请日：2023-05-16
Applicant: Tula eTechnology, Inc.
Inventor： Paul Carvell , Amnish Singh , Tate Allen Cooper
Abstract: An electric machine is provided. A polyphase machine is provided. A power inverter is electrically connected to the polyphase machine. A controller is electrically connected to the power inverter, wherein the controller provides switching signals to the power inverter, wherein the controller comprises a trajectory calculator that provides an optimized trajectory for transitioning the polyphase machine from a first torque to a second torque.
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公开(公告)号：US11133767B2
公开(公告)日：2021-09-28
申请号：US17200048
申请日：2021-03-12
Applicant: Tula eTechnology, Inc.
Inventor： Louis J. Serrano , Paul Carvell , Adya S. Tripathi
Abstract: A variety of methods, controllers and electric machine systems are described for pulse control of electric machines (e.g., electric motors and generators). To improve the energy conversion efficiency of the machine, pulse control involves determining if the machine should operate in a continuous mode or pulse mode, and if the latter, defining a magnitude, duty cycle, and frequency for the pulses. One or more tables, indexing by a wide range of speeds and torque requests, is/are used to define the pulsing frequency or a pulsing frequency pattern.
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8.发明授权公开(公告)号：US11888424B1
公开(公告)日：2024-01-30
申请号：US18200264
申请日：2023-05-22
Applicant: Tula eTechnology, Inc.
Inventor： Paul Carvell , Philippe Farah
IPC: H02P25/064 , H02P27/08
CPC classification number: H02P27/085
Abstract: A method of controlling an electric machine having a separately excitable rotor and stator includes pulsing the electric machine and controlling the electric machine to an OFF state. Pulsing the electric machine includes exiting the rotor with direction current and the stator with a stator biasing current at the same time to generate magnetic flux in the rotor via two separate paths. Pulsing the electric machine may also include terminating the stator basing current when a desired magnetic flux is generated in the rotor. Pulsing the electric machine may include proving a stator flux to the stator such that the electric machine provides a pulse torque.
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公开(公告)号：US11623529B2
公开(公告)日：2023-04-11
申请号：US17497147
申请日：2021-10-08
Applicant: Tula eTechnology, Inc.
Inventor： Paul Carvell , Adya S. Tripathi
Abstract: Modulated pulse control of electric machines to deliver a desired output in a more energy efficient manner by either (a) operating the electric machine in a continuous mode when a requested torque demand is greater than the peak efficiency torque of the electric machine or (b) in a pulsed modulation mode when the requested torque demand is less than the peak efficiency torque of the electric machine. When operating in the pulsed modulation mode, the inverter may be deactivated to further improve the system efficiency when field weakening is not required to mitigate or eliminate generation of a retarding torque in situations when Back Electromagnetic Force (BEMF) exceeds a supply voltage for the inverter of the machine.
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公开(公告)号：US20220294368A1
公开(公告)日：2022-09-15
申请号：US17695663
申请日：2022-03-15
Applicant: Tula eTechnology, Inc.
Inventor： Andrew W. Phillips , Matthew A. Younkins , Paul Carvell , John M. Fuerst
IPC: H02P6/10
Abstract: A method of controlling an electric motor includes receiving a duty cycle for the electric motor for delivering a target torque from the electric motor, generating a pulse train, and pulsing the electric motor with the generated pulse train. Generating the pulse train being at least partially based on the received duty cycle. The generated pulse train optimized to improve at least one of noise, vibration, or harshness of the electric motor when compared to a constant pulse frequency.
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