Flux linkage identification method based on reduction of three-phase endpoint voltage to resultant vector voltage

A synthetic vector and flux linkage identification technology, applied in the field of power electronics, can solve the problem of low accuracy of identification results and achieve the effect of avoiding dead time

Pending Publication Date: 2022-07-29
伯朗特机器人股份有限公司
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Problems solved by technology

[0003] Based on this, the purpose of the present invention is to provide a flux linkage identification method based on three-phase terminal voltage reduction synthetic vector voltage, using motor terminal voltage to restore the actual synthetic vector voltage, to avoid dead time, inverter tube voltage The problem that the actual voltage is not completely equal to the reference voltage due to the degradation, which leads to the problem that the accuracy of the identification result is not high

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  • Flux linkage identification method based on reduction of three-phase endpoint voltage to resultant vector voltage
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  • Flux linkage identification method based on reduction of three-phase endpoint voltage to resultant vector voltage

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[0032] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0033] It should be clear that the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the embodiments of the present application, all other embodiments obtained by persons of ordinary skill in the art without creative work fall within the protection scope of the embodiments of the present application.

[0034] It should be noted that the diagrams provided in the following embodiments are only to illustrate the basic concept of the present invention in a schematic way, so the diagrams only show the components related to the present invention rather than the number, shape and number of components in actual implementation. For dimension drawing, the type,...

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Abstract

The invention relates to a flux linkage identification method based on three-phase endpoint voltage reduction synthesis vector voltage, and the method employs an endpoint voltage reduction vector voltage program module and a flux linkage identification program module to complete flux linkage identification on the basis of an FOC motor control algorithm composed of park, Clarke, Ipark, SVPWM and current loop PID. According to the method, the actual resultant vector voltage is restored by using the motor endpoint voltage, so that the problem of low identification result precision caused by the fact that the actual voltage is not completely equal to the reference voltage due to dead time, inverter tube voltage drop and the like is avoided.

Description

technical field [0001] The present invention relates to the technical field of power electronics, in particular to a flux linkage identification method, device, equipment and storage medium based on three-phase terminal voltage reduction and synthesis vector voltage. Background technique [0002] Due to its strong controllability and high reliability, motors are often used in various driving occasions. However, due to the different performance parameters of each motor, the parameters of the motor controller must be adjusted individually for each motor, so it is very important for the motor controller to automatically identify the motor characteristic parameters and automatically set the controller parameters accordingly. One of the motor characteristic parameters is the motor rotor flux linkage, which is used to automatically set the motor speed loop parameters. The existing flux linkage identification technology uses the reference synthesized vector voltage (hereinafter re...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/14H02P27/12
CPCH02P21/141H02P21/14H02P27/12
Inventor 杨仲秋田坤淼杨思远李家晖
Owner 伯朗特机器人股份有限公司
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