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公开(公告)号：US20240380205A1
公开(公告)日：2024-11-14
申请号：US18654047
申请日：2024-05-03
Applicant: Schneider Toshiba Inverter Europe SAS
Inventor： Alexandre Credoz , Pascal Combes , Al Kassem Jebai
Abstract: A control process for a control system of a load system connected to an electric grid through the control system wherein the control process is configured to provide one or more adapted drive commands to the control system dependent on the grid frequency. The control system may include an inverter, a converter, a thyristor bridge or contactors and the load may be a motor. A control device for implementing the control process also is disclosed.
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公开(公告)号：US11264935B2
公开(公告)日：2022-03-01
申请号：US17031223
申请日：2020-09-24
Applicant: Schneider Toshiba Inverter Europe SAS
Inventor： Pascal Combes , Dilshad Surroop , Philippe Martin , Pierre Rouchon
Abstract: A variable speed drive comprises an output for delivering a drive voltage to an electric motor, power inverter, a drive controller, and a current sensor. The drive controller includes a PWM generator, a control law module, and a state variable estimator for estimating a state variable of the electric motor. The module computes a target voltage signal based on state variable estimates provided by the estimator and outputs the target voltage signal to the PWM generator. The generator approximates the target voltage signal with a PWM control signal, controls the inverter using the control signal, computes, based on the deviation between the control signal and the target voltage signal, an estimation support signal, and outputs the estimation support signal to the estimator. The estimator estimates a state variable of the motor based on the estimation support signal and the drive current, and outputs the estimate to the module.
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Patent Agency Ranking
公开(公告)号：US11626821B2
公开(公告)日：2023-04-11
申请号：US17543835
申请日：2021-12-07
Applicant: Schneider Toshiba Inverter Europe SAS
Inventor： Pascal Combes
IPC: H02P6/18 , H02P21/18 , H02P21/24 , H02P25/026
Abstract: A method for sensorless control of an electric motor implemented in a variable speed drive including: determining a control voltage to be applied to the motor; injecting a high frequency signal to the control voltage to obtain an excitation voltage, wherein one or more frequencies of the high frequency signal varies with time; applying the excitation voltage to the motor; measuring a current signal induced in the motor by the excitation voltage, wherein the current signal comprises a fundamental current, induced by the control voltage, and a disturbance current, induced by the high frequency signal; and demodulating the current signal.
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公开(公告)号：US20220200493A1
公开(公告)日：2022-06-23
申请号：US17543835
申请日：2021-12-07
Applicant: Schneider Toshiba Inverter Europe SAS
Inventor： Pascal Combes
IPC: H02P6/18 , H02P21/18 , H02P21/24 , H02P25/026
Abstract: A method for sensorless control of an electric motor implemented in a variable speed drive including: determining a control voltage to be applied to the motor; injecting a high frequency signal to the control voltage to obtain an excitation voltage, wherein one or more frequencies of the high frequency signal varies with time; applying the excitation voltage to the motor; measuring a current signal induced in the motor by the excitation voltage, wherein the current signal comprises a fundamental current, induced by the control voltage, and a disturbance current, induced by the high frequency signal; and demodulating the current signal.
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公开(公告)号：US20240120866A1
公开(公告)日：2024-04-11
申请号：US18242200
申请日：2023-09-05
Applicant: Schneider Toshiba Inverter Europe SAS
Inventor： Mohamad Koteich , Pascal Combes
CPC classification number: H02P21/20 , H02P21/141 , H02P2207/05
Abstract: Examples include a method for determining a static load torque at standstill applied to a salient pole synchronous motor. The method comprises fixing a first non-zero torque-producing current component and controlling motor speed using a speed loop regulation of a first regulated component to reach a first zero motor speed steady state corresponding to the fixed first non-zero current component, the motor being subjected to the specific static load torque. The method further comprises controlling motor speed using a speed loop regulation of a second regulated component to reach a second zero motor speed steady state corresponding to a fixed second non-zero torque-producing current component, the motor being subjected to the specific static load torque, the first non-zero current component and the second non-zero current component corresponding to different values. The load torque is estimated as a function of components of the first and second zero motor speed steady states.
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公开(公告)号：US11791759B2
公开(公告)日：2023-10-17
申请号：US17558228
申请日：2021-12-21
Applicant: Schneider Toshiba Inverter Europe SAS
Inventor： Pascal Combes , Dilshad Surroop , Philippe Martin , Pierre Rouchon
IPC: H02P27/08 , H02P21/22 , H02M7/5395
CPC classification number: H02P27/085 , H02M7/5395 , H02P21/22
Abstract: A variable speed drive includes an output terminal for delivering a drive voltage; a power inverter for generating the drive voltage; a drive controller for controlling the generation of the drive voltage; and a current sensor for providing a drive current intensity signal to the drive controller. The drive controller includes a PWM generator; a control law module; and a state variable estimator estimating a state variable of the controlled AC electric motor.
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公开(公告)号：US11349425B2
公开(公告)日：2022-05-31
申请号：US16793689
申请日：2020-02-18
Applicant: Schneider Toshiba Inverter Europe SAS
Inventor： Pascal Combes , Dilshad Surroop , Philippe Martin , Pierre Rouchon
Abstract: A method and device estimate an amplitude of a periodic component in a measured analog signal, e.g. from an electric motor, and adapt a control law for an external entity, e.g., a variable speed drive (VSD) controlling the motor, based on the estimated amplitude. The measured analog signal is converted by delta-sigma modulation to a digital signal that is applied to at least one filter. Periodic signals of independent known periodic functions are also applied to the at least one filter. In response, the at least one filter provides the estimated amplitude of the periodic component in the measured analog signal that may be used to adapt the control law. A monitoring value for the electric motor may also be based on the estimated amplitude of the periodic component.
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