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Method and device for controlling motor

A current and phase current technology, applied in the field of motor control, can solve problems such as multi-time and consumption, and achieve the effect of reducing time

Active Publication Date: 2019-03-08
SICHUAN HONGMEI INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the prior art, the starting process of the motor includes four stages: positioning, dragging, non-position transition, and closed-loop control. In the starting process of the motor, it is first necessary to determine the position of the rotor of the motor, and then, according to position, control the motor to rotate to the preset speed, and the start-up process takes a lot of time

Method used

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  • Method and device for controlling motor

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Embodiment Construction

[0061] 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 the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection of the present invention. scope.

[0062] Such as figure 1 As shown, the embodiment of the present invention provides a method for controlling a motor, and the method may include the following steps:

[0063] Step 101: Collect the three-phase current when the motor brakes in real time;

[0064] Step 102: Determine a set of three-phase currents for positioning according to the magnitude...

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Abstract

The invention provides a method and device for controlling a motor. The method comprises the following steps: collecting three-phase current in real time when a motor is in the brake; determining a group of three-phase current for positioning according to the amplitude of one group of three-phase current collected every time; determining a location of a rotor when a motor stops rotating accordingto the group of three-phase current for positioning; taking the location of the rotor when the motor stops rotating as an initial location of the next starting of the motor; and controlling the motorto begin running from a closed-loop control stage according to the initial location when the motor is started next time. The invention provides a method and device for controlling the motor, and the time required for starting the motor can be reduced.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a method and device for controlling a motor. Background technique [0002] In the prior art, the starting process of the motor includes four stages: positioning, dragging, non-position transition, and closed-loop control. In the starting process of the motor, it is first necessary to determine the position of the rotor of the motor, and then, according to position, control the motor to rotate to the preset speed, and the start-up process takes a lot of time. Contents of the invention [0003] Embodiments of the present invention provide a method and device for controlling a motor, which can reduce the time required for starting the motor. [0004] In one aspect, an embodiment of the present invention provides a method for controlling a motor, including: [0005] Real-time collection of three-phase current when the motor brakes; [0006] Determine a set of three-phase currents...

Claims

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Application Information

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IPC IPC(8): H02P1/26
CPCH02P1/26
Inventor 任艳华唐婷婷王声纲杨正
Owner SICHUAN HONGMEI INTELLIGENT TECH CO LTD
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