- Patent Title: Method for determining a correction value which describes an angular difference between an assumed and an actual position of a d-axis, control device and inverter
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Application No.: US17279319Application Date: 2019-09-20
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Publication No.: US11539318B2Publication Date: 2022-12-27
- Inventor: Markus Seilmeier , Andreas Held , Andreas Walter , Hans-Georg Köpken
- Applicant: Valeo Siemens eAutomotive Germany GmbH
- Applicant Address: DE Erlangen
- Assignee: Valeo Siemens eAutomotive Germany GmbH
- Current Assignee: Valeo Siemens eAutomotive Germany GmbH
- Current Assignee Address: DE Erlangen
- Agent Manabu Kanesaka
- Priority: DE102018124105.4 20180928
- International Application: PCT/EP2019/075303 WO 20190920
- International Announcement: WO2020/064536 WO 20200402
- Main IPC: H02P21/14
- IPC: H02P21/14
Abstract:
A method determines a correction value for a control device for an electric machine, which describes an angular difference between a position of a d-axis of the electric machine and an actual position of the d-axis. The correction value is determined in a rotating state of a rotor of the electric machine as a function of a d voltage value describing a d component of a stator voltage specified by the control device in the initial configuration, of a q voltage value describing a q component of the stator voltage specified by the control device in the initial configuration, of a flux value describing a magnetic flux of the rotor, a speed value describing the speed of the rotor in the rotating state, and of a calibration value describing a speed-dependent voltage error of the d component of the stator voltage.
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