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Control method and system of self-starting synchronous motor, storage medium and processor

A technology of synchronous motor and control method, which is applied in the direction of single motor speed/torque control, starting device, etc., and can solve the problem that the self-starting synchronous motor cannot be pulled into synchronization, etc.

Active Publication Date: 2021-04-20
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Embodiments of the present invention provide a control method, system, storage medium, and processor for a self-starting synchronous motor, so as to at least solve the technical problem in the prior art that the self-starting synchronous motor cannot be pulled into synchronization during the starting process

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  • Control method and system of self-starting synchronous motor, storage medium and processor
  • Control method and system of self-starting synchronous motor, storage medium and processor
  • Control method and system of self-starting synchronous motor, storage medium and processor

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Embodiment 1

[0028] According to an embodiment of the present invention, an embodiment of a control method for a self-starting synchronous motor is provided. It should be noted that the steps shown in the flow chart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, Also, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0029] figure 1 is a control method for a self-starting synchronous motor according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0030] Step S101, controlling the self-starting synchronous motor to be powered on and detecting the speed of the self-starting synchronous motor, wherein the speed of the self-starting synchronous motor gradually increases;

[0031] Step S102, when the speed of the self-starting synchronous...

Embodiment 2

[0077] According to an embodiment of the present invention, an embodiment of a control system for a self-starting synchronous motor is provided, such as Figure 6 As shown, it includes: a self-starting synchronous motor 60; a speed detection device 61, which detects the speed of the self-starting synchronous motor 60, wherein, the speed of the self-starting synchronous motor 60 gradually rises after power-on; a voltage regulating device 62, which is connected with the speed detection device 61, used to control the power-on of the self-starting synchronous motor 60, and when the speed of the self-starting synchronous motor 60 reaches the first speed, control the input voltage of the self-starting synchronous motor 60 to start to rise, when the speed of the self-starting synchronous motor reaches the first speed At two speeds, the input voltage rises to a preset voltage, wherein the first speed is less than the second speed, the second speed is less than the rated speed of the se...

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Abstract

The invention discloses a control method and a system of a self-starting synchronous motor, a storage medium and a processor. The method comprises the steps that a self-starting synchronous motor is controlled to be powered on, the rotating speed of the self-starting synchronous motor is detected, and the rotating speed of the self-starting synchronous motor is gradually increased; when the rotating speed of the self-starting synchronous motor reaches a first rotating speed, the input voltage of the self-starting synchronous motor is controlled to start to rise; when the rotating speed of the self-starting synchronous motor reaches a second rotating speed, the input voltage of the self-starting synchronous motor is controlled to rise to a preset voltage, wherein the first rotating speed is smaller than the second rotating speed, the second rotating speed is smaller than the rated rotating speed of the self-starting synchronous motor, and the preset voltage is larger than the rated voltage of the self-starting synchronous motor; and the input voltage is controlled to be kept at the preset voltage until the rotating speed of the self-starting synchronous motor reaches the rated rotating speed for the first time. According to the invention, the technical problem that the self-starting synchronous motor cannot be pulled in for synchronization in the starting process is solved.

Description

technical field [0001] The present invention relates to the technical field of self-starting synchronous motor control, in particular to a control method and system, a storage medium and a processor of a self-starting synchronous motor. Background technique [0002] Self-starting synchronous motor is a type of motor that realizes self-starting and synchronous operation through asynchronous torque. This type of self-starting motor can be directly connected to the power supply to start, and no need to use frequency converter to control the starting process. However, the starting torque and pull-in torque of this type of motor are negatively correlated. In the initial stage of starting, the starting torque of the motor is large, resulting in a large starting current of the motor, which will have a greater impact on the power grid; During the synchronization process, the motor pull-in torque is small, so that the motor will not be able to pull in the synchronization during the s...

Claims

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Application Information

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IPC IPC(8): H02P6/06H02P6/08H02P6/20
Inventor 史进飞李霞陈彬肖勇张志东
Owner GREE ELECTRIC APPLIANCES INC
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