Unlock instant, AI-driven research and patent intelligence for your innovation.

A motor control method, system and air conditioner

A technology of motor control and motor controller, which is applied in the direction of control system, motor control, electrical components, etc., to achieve the effect of prolonging the service life

Active Publication Date: 2020-06-30
GREE ELECTRIC APPLIANCES INC
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a motor control method and system that can make the motor work stably at the state of maximum efficiency in order to solve the problem that the motor can only be optimized at a certain operating point due to the fixed advance angle of the motor in the above-mentioned prior art.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A motor control method, system and air conditioner
  • A motor control method, system and air conditioner
  • A motor control method, system and air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Such as figure 2 As shown, in the embodiment of the present invention, a motor control method is provided, which includes step S1-step S3. Each will be described below.

[0028] Step S1: Obtain the motor speed command value VSP input from the outside.

[0029] It should be noted that the motor speed command value VSP is the target speed for the motor to run, which is usually set by the external control terminal, and the motor is gradually adjusted from 0 to the target speed according to the speed of the external control terminal. As the load speed increases, the external control terminal adjusts the real-time value of the speed command VSP accordingly. When the load is stable and reaches the target speed, VSP is basically stable.

[0030] Step S2: Calculate the corresponding advance angle θadv according to the motor speed command value VSP and the preset VSP-θadv curve, wherein the VSP-θadv curve is a continuous curve formed according to the parameters of the motor. ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a motor control method and system. The method comprises the steps of: acquiring a motor speed command value VSP input from the outside; according to the motor speed command value VSP and the preset VSP-theta adv curve, calculating the corresponding advance angle theta adv; controlling the motor to operate according to the advance angle. The motor control method and the motor control system of the invention can make the motor work stably in a maximum efficiency state.

Description

technical field [0001] The invention relates to the field of motor control, in particular to a motor control method, system and air conditioner. Background technique [0002] When the motor is working, when the rotation speed increases and the motor current increases, the current phase delays. Therefore, in order to efficiently control the motor, adjustment control of the advance angle is required. [0003] At present, most DC fan motors use a fixed advance angle control method to adjust the current-voltage phase angle of the motor body. Such as figure 1 As shown, in the control mode of fixed advance angle, no matter how the input motor speed Vsp changes, the advance angle Qadv remains unchanged. [0004] However, the fixed advance angle can only make the motor work at the maximum efficiency at a specific speed / torque, and cannot work at the maximum efficiency at other speeds / torques. Contents of the invention [0005] The purpose of the present invention is to provide...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02P29/00
CPCH02P29/00
Inventor 黄伟贺小林刘文斌
Owner GREE ELECTRIC APPLIANCES INC