公开(公告)号：US20210224440A1

公开(公告)日：2021-07-22

申请号：US17131396

申请日：2020-12-22

Applicant: Faraday&Future Inc.

Inventor： Mengwei Li Campbell ,  Jie Dang

IPC: G06F30/23 ,  G01R31/34 ,  G01R33/02

Abstract: Methods and apparatus for estimating and minimizing core losses in interior magnet machines are disclosed. Methods can include creating, modifying, or receiving a finite element analysis (FEA) model to represent at least one portion of an motor in a computer system, placing at least one coil at a first location within the rotor iron or stator iron of the motor in the FEA model, calculating a time-domain flux density B of the at least one coil, converting the calculated flux density function to a frequency-domain spectrum, receiving material core loss parameters for at least some frequencies indicated by the frequency-domain spectrum, and determining a core loss of the at least one portion of an electric motor by a weighted combination of the material core loss parameters. Coils may be placed manually by a user through a user interface, or may be placed automatically.

公开(公告)号：US20170151875A1

公开(公告)日：2017-06-01

申请号：US14954963

申请日：2015-11-30

Applicant: Faraday&Future Inc.

Inventor： Mengwei Campbell ,  Jie Dang

IPC: B60L3/12 ,  G01D5/20

CPC classification number: B60L3/12 ,  B60L3/0061 ,  B60L15/025 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/427 ,  B60L2240/429 ,  B60L2270/142 ,  B60L2270/145 ,  G01D3/036 ,  Y02T10/643 ,  Y02T10/7258

Abstract: Systems and methods are disclosed for detecting position measurement errors for an electric motor. An exemplary system may include a position sensor configured to measure a position of a rotor of the electric motor. The system may also include an error detector configured to detect an offset between the position measured by the position sensor and an actual position of the rotor. The error detector may include a signal injector configured to inject a probing signal to a stator of the electric motor. The error detector may also include a signal sampler configured to sample a response signal from the stator of the electric motor. The error detector may be configured to derive the offset based on the response signal.

公开(公告)号：US20180322231A1

公开(公告)日：2018-11-08

申请号：US15772041

申请日：2016-10-27

Applicant: Faraday&Future Inc.

Inventor： Mengwei Li Campbell ,  Jie Dang

IPC: G06F17/50 ,  G01R33/02 ,  G01R31/34

CPC classification number: G06F17/5018 ,  G01R31/34 ,  G01R33/02 ,  G06F2217/12

Abstract: Methods and apparatus for estimating and minimizing core losses in interior magnet machines are disclosed. Methods can include creating, modifying, or receiving a finite element analysis (FEA) model to represent at least one portion of an motor in a computer system, placing at least one coil at a first location within the rotor iron or stator iron of the motor in the FEA model, calculating a time-domain flux density B of the at least one coil, converting the calculated flux density function to a frequency-domain spectrum, receiving material core loss parameters for at least some frequencies indicated by the frequency-domain spectrum, and determining a core loss of the at least one portion of an electric motor by a weighted combination of the material core loss parameters. Coils may be placed manually by a user through a user interface, or may be placed automatically.