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Motor carrier frequency control method and device, storage medium and motor control system

A technology of carrier frequency and control method

Pending Publication Date: 2021-11-05
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The main purpose of the present invention is to overcome the defects of the above-mentioned prior art, and provide a motor carrier frequency control method, device, storage medium and motor control system to solve the problem of sudden change in motor current when the carrier frequency is switched in the prior art

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  • Motor carrier frequency control method and device, storage medium and motor control system
  • Motor carrier frequency control method and device, storage medium and motor control system
  • Motor carrier frequency control method and device, storage medium and motor control system

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Embodiment Construction

[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. 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.

[0022] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embo...

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Abstract

The invention provides a motor carrier frequency control method and device, a storage medium and a motor control system, and the method comprises the steps of determining a set carrier frequency corresponding to a rotating speed according to a rotating speed interval of the rotating speed of a motor in more than two preset rotating speed intervals, wherein each rotating speed interval in the more than two rotating speed intervals corresponds to a different set carrier frequency; and switching the carrier frequency of the motor to the set carrier frequency in variable step size manner, based on the phase current of the motor and under the condition of keeping the given rotating speed of the motor unchanged. According to the scheme provided by the invention, the risk of motor shutdown caused by sudden current change during carrier frequency switching can be prevented.

Description

technical field [0001] The invention relates to the control field, in particular to a motor carrier frequency control method, device, storage medium and motor control system. Background technique [0002] In the traditional carrier frequency control method of permanent magnet synchronous motors used in air conditioners, the sudden change of motor current when the carrier frequency is switched may cause severe vibration of the motor, and the large current impulse will cause the motor to stop, which seriously affects the stable operation of permanent magnet synchronous motors used in air conditioners at full speed. Effect. Contents of the invention [0003] The main purpose of the present invention is to overcome the defects of the above-mentioned prior art, and provide a motor carrier frequency control method, device, storage medium and motor control system to solve the problem of sudden change in motor current when the carrier frequency is switched in the prior art. [00...

Claims

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Application Information

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IPC IPC(8): H02P6/08
CPCH02P6/08H02P2207/05
Inventor 海蔚兰徐常升
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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