Vector control method and system of permanent magnet synchronous motor, and storage medium

A permanent magnet synchronous motor, vector control technology, applied in vector control systems, control systems, motor generator control and other directions, can solve the problems of reduced load capacity, small operating frequency range, and reduced control performance, to reduce execution time. requirements, hold performance, effect of high switching frequency

Active Publication Date: 2017-10-10
GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the problem brought by this solution is the decline of control performance, such as poor dynamic response, small operating frequency range, and reduced load capacity.

Method used

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  • Vector control method and system of permanent magnet synchronous motor, and storage medium
  • Vector control method and system of permanent magnet synchronous motor, and storage medium
  • Vector control method and system of permanent magnet synchronous motor, and storage medium

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Embodiment Construction

[0088] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0089] see figure 1 , the vector control method of the permanent magnet synchronous motor that the embodiment of the present invention proposes, comprises the following steps:

[0090] S101, according to the switching frequency k 1 , will control the frequency k 2 configured as k 2 =k 1 / N, where N is the frequency division coefficient o...

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Abstract

The invention discloses a vector control method and system of a permanent magnet synchronous motor and a storage medium. The method includes configuring control frequency k2=k1/N according to switching frequency k1, wherein N is a frequency division coefficient of a control period and is a natural number; initializing a period value and an initial value of a switching period timer, and a period value and an initial value of a control period timer; when an interrupt occurs in the control period timer, calculating wave generation voltage of all switching periods that a next control period covers; and in all the switching periods that the next control period covers, when an interrupt occurs in the switching period timer, converting the wave generation voltage into a wave generation comparison value. The vector control method of the permanent magnet synchronous motor can realizes an effect of achieving relatively high switching frequency while control frequency is relatively low, and on the premise of maintaining vector algorithm performance, lowers a requirement for execution time.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a vector control method, system and storage medium of a permanent magnet synchronous motor. Background technique [0002] Permanent magnet synchronous motor refers to a synchronous motor that generates a synchronous rotating magnetic field by excitation of permanent magnets, called a permanent magnet synchronous motor. In recent years, with the rapid development of power electronics technology, microelectronics technology, new motor control theory and rare earth permanent magnet materials, permanent magnet synchronous motors have been rapidly popularized and applied. [0003] It is used in occasions that are sensitive to electromagnetic noise, such as kitchen and bathroom appliances such as range hoods. In order to reduce electromagnetic noise, the frequency of PWM wave should be higher than 20K Hz. However, such a high switching frequency has strict requirements on the executio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/00H02P21/14
CPCH02P21/00H02P21/14
Inventor 李云欢
Owner GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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