Invention Grant
- Patent Title: Technique for on-the-fly start-up of a permanent magnet AC motor without a speed or position sensor
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Application No.: US16428261Application Date: 2019-05-31
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Publication No.: US11575336B2Publication Date: 2023-02-07
- Inventor: Matej Pacha , Simon Zossak , Lukas Gorel
- Applicant: NXP USA, Inc.
- Applicant Address: US TX Austin
- Assignee: NXP USA, Inc.
- Current Assignee: NXP USA, Inc.
- Current Assignee Address: US TX Austin
- Main IPC: H02P21/32
- IPC: H02P21/32 ; H02P21/18 ; H02P21/22 ; H02P21/34 ; H02P27/08
Abstract:
A method and apparatus are provided for controlling a sensorless multi-phase permanent magnet (PM) motor by sensing induced motor terminal voltages from the PM motor while the rotor is spinning, generating an input voltage vector signal from the plurality of induced motor terminal voltages, projecting the input voltage vector signal to a transformed voltage vector signal which does not include DC-offset components by using a Clarke transformation without a zero component that is applied to the input voltage vector signal, and estimating an initial rotor position of the rotor from the transformed voltage vector signal, wherein said sensing, projecting, and estimating are performed while a power converter for the sensorless multi-phase PM motor is disabled.
Public/Granted literature
- US20200382035A1 Technique for On-The-Fly Start-Up of a Permanent Magnet AC Motor Without a Speed or Position Sensor Public/Granted day:2020-12-03
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