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Method and apparatus for automatically tuning a motor current regulator

A current regulator, current technology, applied in the direction of motor generator control, control of electromechanical brakes, control of generators, etc., can solve the problem of not providing motor tuning and switching frequency

Active Publication Date: 2020-12-08
DEERE & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, existing solutions do not provide a tuned switching frequency of the motor used to control the motor

Method used

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  • Method and apparatus for automatically tuning a motor current regulator
  • Method and apparatus for automatically tuning a motor current regulator
  • Method and apparatus for automatically tuning a motor current regulator

Examples

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Embodiment Construction

[0011] Some example embodiments will now be described more fully with reference to the accompanying drawings that illustrate some example embodiments.

[0012] Therefore, while the exemplary embodiments are capable of various modifications and alternative forms, the drawings illustrate the embodiments by way of example and will be described herein in detail. It should be understood, however, that there is no intent to limit example embodiments to the particular forms disclosed, but on the contrary, example embodiments are to cover all modifications, equivalents, and alternatives falling within the scope of the claims. Like numbers refer to like elements throughout the description of the drawings.

[0013] It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these terms should not limit these elements. These terms are only used to distinguish one element from another. For example, a first element could be termed a...

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PUM

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Abstract

In an exemplary embodiment, the motor control unit includes a processor configured to tune a current regulator that regulates the current supplied to the electric motor by determining a plurality of Variables, the plurality of variables include a stator resistance value, a first inductance value and a second inductance value, the stator resistance value is the resistance value of the stator of the electric motor, the first inductance value is the direct axis inductance of the electric motor, and the second inductance The value is the quadrature axis inductance of the electric motor. The processor is further configured to tune the current regulator by determining a plurality of gains based on the determined plurality of variables, and generating a current command for operating the electric motor based on the determined plurality of gains.

Description

technical field [0001] Exemplary embodiments relate to systems and methods for automatically tuning the gain of a current regulator used in an electric machine. Background technique [0002] The current regulators that supply current to the motors must be tuned for each motor. Tuning of a current regulator involves determining a set of parameters such as stator resistance, direct-axis (d-axis) inductance, and quadrature-axis (q-axis) inductance. When these parameters are unknown, the process of tuning a current regulator is difficult and tends to lead to inaccurate measurements. [0003] Existing solutions for estimating these parameters include: providing a single test point for estimating the stator resistance; and applying a fixed pulse as a voltage waveform when determining the induced parameters. Furthermore, existing solutions do not provide for a tuned switching frequency of the motor controlling the electric machine. Contents of the invention [0004] Some embod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/22
CPCH02P21/14H02P21/22
Inventor 大卫·霍姆伯格罗伯特·肖吴隆
Owner DEERE & CO