公开(公告)号：US20240088782A1

公开(公告)日：2024-03-14

申请号：US18464372

申请日：2023-09-11

Applicant: ABB Schweiz AG

Inventor： Olli Alkkiomäki ,  Panagiotis Kakosimos ,  Kari Tikkanen ,  Teppo Pirttioja ,  Aleksi Vulli

IPC: H02M1/32 ,  G01R31/26

CPC classification number: H02M1/327 ,  G01R31/2642 ,  H05K7/2089

Abstract: A field of electric drive devices and arrangements including a plurality of power semiconductor components formed in or on a common substrate, and more particularly to a method and an apparatus for monitoring the condition of a power semiconductor module. The method for monitoring the condition of a power semiconductor module of an electric drive device connected to an electric machine includes the steps of engaging a locking of the rotor of the electric machine at zero speed or at near zero speed by injecting DC currents by the electric drive device, initiating test temperature recording in the power semiconductor module, disengaging the locking the rotor of the electric machine by the electric drive device, terminating the test temperature recording and storing the recorded data of the test temperature as test temperature data, and determining the condition of the power semiconductor module utilising the test temperature data.

公开(公告)号：US20230313875A1

公开(公告)日：2023-10-05

申请号：US18189666

申请日：2023-03-24

Applicant: ABB Schweiz AG

Inventor： Teemu Tanila ,  Olli Alkkiomäki ,  Joni Siimesjärvi

IPC: F16H57/01

CPC classification number: F16H57/01 ,  F16H2057/012

Abstract: An electric power train includes an electric drive, an electric motor driven by the electric drive, and a meshing pair of a drive gear and a driven gear. The drive gear is coupled to the electric motor and the driven gear is coupled to a mechanical load. The backlash of the meshing pair of the drive gear and the driven gear is measured and estimated based on a time until a contact of teeth of the rotating drive gear and the driven gear during a startup of the electric motor. Wear of the meshing pair of the drive gear and the driven gear based on a change in the measured backlash over time during the operation of the electric power train.