公开(公告)号：US20230318499A1

公开(公告)日：2023-10-05

申请号：US18192366

申请日：2023-03-29

Applicant: Danfoss Power Electronics A/S

Inventor： Ana-Mari Tataru Kjær ,  Sanjeet Kumar Dwivedi ,  Thiruvenkadam Madhulingam ,  Katuri Gudaru Venkaiah

IPC: H02P21/14 ,  G01R19/04

CPC classification number: H02P21/14 ,  G01R19/04

Abstract: A method for determining a motor type of an electric motor includes several phases, wherein two or more pulses are applied to the motor, respective currents are measured and the motor type is determined based on the pulses. Further, a motor control apparatus is configured to perform such a 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).