公开(公告)号：US20200014313A1

公开(公告)日：2020-01-09

申请号：US16452805

申请日：2019-06-26

Applicant: Danfoss Power Electronics A/S

Inventor： Stefan Erb

IPC: H02P6/185 ,  H02P1/30 ,  H02P21/12

Abstract: A method for identifying the magnetic anisotropy of an electric rotary field machine comprising a rotor and a stator is described, the method comprising the steps of setting injection pulses of equal absolute values during an injection interval, detecting a respective current response in form of current difference vectors, and determining the anisotropy from the voltage vectors and current difference vectors. Such a method should allow identifying of magnetic anisotropy in a simple way. To this end, injection pulses in the three-phase domain are used.

公开(公告)号：US11342868B2

公开(公告)日：2022-05-24

申请号：US16452805

申请日：2019-06-26

Applicant: Danfoss Power Electronics A/S

Inventor： Stefan Erb

IPC: H02P6/00 ,  H02P1/04 ,  H02P6/185 ,  H02P1/30 ,  H02P21/12

Abstract: A method for identifying the magnetic anisotropy of an electric rotary field machine comprising a rotor and a stator is described, the method comprising the steps of setting injection pulses of equal absolute values during an injection interval, detecting a respective current response in form of current difference vectors, and determining the anisotropy from the voltage vectors and current difference vectors. Such a method should allow identifying of magnetic anisotropy in a simple way. To this end, injection pulses in the three-phase domain are used.