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Permanent magnet synchronous motor control method and device based on extended potential observer

A technology of permanent magnet synchronous motor and control method, which is applied in the direction of motor generator control, electronic commutation motor control, motor control, etc., can solve problems such as disturbance of internal parameters of the motor, reduce economic costs, avoid unstable operation of the motor, Effects of Improving Observation Accuracy and Response

Active Publication Date: 2021-11-26
HARBIN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In addition, the temperature rise of the motor in the case of long-term operation will also cause disturbances in the internal parameters of the motor

Method used

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  • Permanent magnet synchronous motor control method and device based on extended potential observer
  • Permanent magnet synchronous motor control method and device based on extended potential observer
  • Permanent magnet synchronous motor control method and device based on extended potential observer

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Embodiment Construction

[0087] The extended potential observer-based permanent magnet synchronous motor control method and device proposed by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims.

[0088] For realizing the above-mentioned purpose of claims, the present invention comprises the following steps:

[0089] Step 1, establish d-q axis voltage model and load torque equation of permanent magnet synchronous motor;

[0090] Step 2, considering the harmonic components of the motor in the extended potential estimation to construct the voltage harmonic equation;

[0091] Step 3, establish the corrected position loop state observer model.

[0092] Described step 1 is realized by the following methods:

[0093] Step 1.1, establish a voltage control model based on the extended electromotive force

[0094] The...

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Abstract

The embodiment of the invention relates to a permanent magnet synchronous motor control method and device based on an extended potential observer, which are used for correcting disturbance of internal parameters of a motor caused by considering harmonic components generated in the motor. The method comprises the following steps: 1, establishing a d-q axis voltage model and a load torque equation of the permanent magnet synchronous motor; 2, constructing a voltage harmonic equation by considering a motor harmonic component in extended potential estimation; and 3, establishing a correction position loop state observer model.

Description

technical field [0001] The invention relates to a control method and device for a permanent magnet synchronous motor, in particular to a control method and device for a permanent magnet synchronous motor based on an extended potential observer. Background technique [0002] As a common driving device, permanent magnet synchronous motor has the advantages of simple structure, low noise, high energy density, high efficiency, etc., and has been more and more widely used in the industrial field. With the development of control technology, higher requirements are put forward for the control level of permanent magnet synchronous motor. [0003] During the actual operation of the permanent magnet synchronous motor, the electromagnetic force distribution inside the motor air gap is accompanied by a small amount of non-ideal order harmonics due to the stator cogging effect and the internal structure of the permanent magnet, which will also cause the permanent magnet of the rotor Gen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/00H02P21/13H02P25/022
CPCH02P21/0003H02P21/13H02P25/022H02P2207/05H02P2207/055Y02T10/72
Inventor 王磊韦欣杨英杰
Owner HARBIN UNIV OF SCI & TECH
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