公开(公告)号：US20240243678A1

公开(公告)日：2024-07-18

申请号：US18574370

申请日：2022-06-01

Applicant: Mitsubishi Electric Corporation

Inventor： Guilherme BUENO MARIANI ,  Nicolas VOYER ,  Gianmario PELLEGRINO ,  Anantaram VARATHARAJAN

IPC: H02P21/13 ,  H02P21/14 ,  H02P21/18 ,  H02P21/26

CPC classification number: H02P21/13 ,  H02P21/141 ,  H02P21/18 ,  H02P21/26

Abstract: The present invention concerns a device and a method for controlling a motor using a maximum torque per ampere field module and a direct flux vector control module. The invention: —determines by the direct flux vector control module reference voltages in a ft framework, —drives the motor with the summed voltages, —measures a motor current vector, —determines a high frequency injection voltage so that the high frequency current response of the motor to the high frequency injection voltages is perpendicular to the measured motor current vector, —determines an estimated flux from the measured motor currents and the voltage references, —determines, from the estimated flux and the high frequency sinewave signal, the reference flux so that the high frequency flux response to the injected voltage is aligned with the measured current vector.

公开(公告)号：US20240014757A1

公开(公告)日：2024-01-11

申请号：US18022703

申请日：2021-10-01

Applicant: Mitsubishi Electric Corporation

Inventor： Guilherme BUENO MARIANI ,  Nicolas VOYER ,  Anantaram VARATHARAJAN ,  Gianmario PELLEGRINO

IPC: H02P21/24 ,  H02P21/18 ,  H02P21/22

CPC classification number: H02P21/24 ,  H02P21/18 ,  H02P21/22

Abstract: The present invention concerns a method and a device for controlling a three-phase motor using a field oriented control system. The invention: —estimates, in a dq plane incremental inductances (I) and (II) of the motor, —determines an incremental saliency (III) of the motor as a ratio between the incremental inductance (I) and the incremental inductance (II), —estimates a first current id* from the estimated incremental saliency (III) and a reference incremental saliency ISR*, —estimates the rotor speed value (IV) of the motor, —estimates a second current iq* from a reference rotor speed value ω*, and the estimated rotor speed value (IV), —controls the voltage applied to the motor according to the first and second estimated currents.

公开(公告)号：US20240313680A1

公开(公告)日：2024-09-19

申请号：US18574360

申请日：2022-06-01

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Guilherme BUENO MARIANI ,  Nicolas VOYER ,  Gianmario PELLEGRINO ,  Anantaram VARATHARAJAN

IPC: H02P21/14 ,  H02P6/18 ,  H02P21/18

CPC classification number: H02P21/141 ,  H02P6/183 ,  H02P21/18 ,  H02P2203/11

Abstract: A method and a device inject a high frequency current vector which has a fixed angle with the measured current vector flowing in the machine. The method: measures the motor current vector, determines a projection value of the motor current on an axis that is orthogonal to a direction having the fixed angle with the measured current vector, demodulates the high frequency variations of the projection value using a first high frequency demodulation signal, determines at least a first angle from the demodulated high frequency variation, determines the injection voltage vector at least from the first angle, a predetermined voltage and a second high frequency modulating signal, the second high frequency modulating signal having the same frequency as the first high frequency demodulating signal and a phase difference with the first high frequency demodulating signal that is equal to π/2.