公开(公告)号：US11637517B2

公开(公告)日：2023-04-25

申请号：US17367814

申请日：2021-07-06

Applicant: Danfoss Power Electronics A/S

Inventor： Jens Godbersen ,  Lucian Asiminoaei

IPC: H02P21/16 ,  G01R31/34

Abstract: The present invention relates to a method for estimating individual phase resistance of a motor by means of an adjustable speed drive (ASD) while the motor controlled by the ASD is running and/or is at standstill. The motor is an asynchronous motor or a synchronous motor. The invention also relates to an adjustable speed drive for executing a corresponding method.

公开(公告)号：US20220014135A1

公开(公告)日：2022-01-13

申请号：US17367814

申请日：2021-07-06

Applicant: Danfoss Power Electronics A/S

Inventor： Jens Godbersen ,  Lucian Asiminoaei

IPC: H02P21/16 ,  G01R31/34

Abstract: The present invention relates to a method for estimating individual phase resistance of a motor by means of an adjustable speed drive (ASD) while the motor controlled by the ASD is running and/or is at standstill. The motor is an asynchronous motor or a synchronous motor. The invention also relates to an adjustable speed drive for executing a corresponding method.

公开(公告)号：US20230194630A1

公开(公告)日：2023-06-22

申请号：US18067862

申请日：2022-12-19

Applicant: Danfoss Power Electronics A/S

Inventor： Lucian Asiminoaei ,  Luzia Almeida ,  Jörg Dannehl ,  Sanjeet Kumar Dwivedi ,  Norbert Hanigovszki

IPC: G01R31/64 ,  G01R23/15

CPC classification number: G01R31/64 ,  G01R23/15 ,  H03H7/0115

Abstract: The present invention is directed at a method for evaluating the degradation level of capacitors of a power filter connected to an adjustable speed drive (ASD) or a power converter. The invention is also directed at an adjustable speed drive and a power converter provided for performing the method.

公开(公告)号：US20250030366A1

公开(公告)日：2025-01-23

申请号：US18774409

申请日：2024-07-16

Applicant: Danfoss Power Electronics A/S

Inventor： Ana-Mari Tataru Kjær ,  Lucian Asiminoaei

IPC: H02P23/14 ,  G01R31/34

Abstract: A method for estimating electrical parameters of an electric motor (205) and a power filter (203) connected to a power converter (201) including injecting an AC signal of different frequencies for a given time window in the power filter (203) and the motor (205), measuring a response signal of the power filter (203) and the motor (205) to the injected AC signal, determining a resonance frequency of the power filter (203) based on the measured response signal, calculating a ratio of leakage inductances of the power filter (203) and the motor (205).