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Motor control method and device

A motor control and motor speed technology, applied in motor control, AC motor control, current controller, etc., can solve the problems of power device damage, voltage and current fluctuations, etc., to prolong service life, small overshoot, improve user The effect of experience

Inactive Publication Date: 2020-10-20
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides a motor control method and device, to at least solve the technical problem in the related art that there are large voltage and current fluctuations during the operation of the motor, resulting in damage to the power device

Method used

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  • Motor control method and device

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Comparison scheme
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Embodiment 1

[0035] According to an embodiment of the present invention, a motor control method 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, and, although the steps shown in the flow chart Although a logical order is shown, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0036] figure 1 is a flowchart of a motor control method according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0037] Step S102, acquiring a rotational speed change value of the motor rotational speed and a first change rate of the rotational speed change value.

[0038] The motor in the above steps may be an EC motor, but not limited thereto, and may also be other AC input inverter permanent magnet synchronous motors.

[0039] In an optional...

Embodiment 2

[0092] According to an embodiment of the present invention, a motor control device is also provided, which can execute the motor control method in the above embodiment, and the specific implementation and preferred application scenarios are the same as those in the above embodiment, and will not be repeated here.

[0093] Figure 9 is a schematic diagram of a motor control device according to an embodiment of the present invention, such as Figure 9 As shown, the device includes:

[0094] The acquisition module 92 is configured to acquire the rotational speed change value of the motor rotational speed and the first change rate of the rotational speed change value.

[0095] The processing module 94 is configured to perform fuzzy decision-making control based on the rotational speed change value and the first change rate to obtain the first duty cycle.

[0096] The control module 96 is configured to control the motor speed based on the first duty cycle.

[0097] Optionally, t...

Embodiment 3

[0107] According to an embodiment of the present invention, a computer-readable storage medium is also provided. The computer-readable storage medium includes a stored program, wherein, when the program is running, the device where the computer-readable storage medium is located is controlled to perform the motor control in the first embodiment above. method.

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Abstract

The invention discloses a motor control method and device. The method comprises the following steps of acquiring a rotating speed change value of a motor rotating speed and a first change rate of therotating speed change value, performing fuzzy decision control based on the rotating speed change value and the first change rate to obtain a first duty ratio, and controlling the motor rotating speedbased on the first duty ratio. The technical problem of power device damage caused by large voltage and current fluctuation in the operation process of the motor in the prior art is solved.

Description

technical field [0001] The present invention relates to the field of motors, in particular to a motor control method and device. Background technique [0002] In the rail transit air-conditioning industry, due to the higher and higher requirements for air-conditioning comfort, energy saving and environmental protection, the application of inverter air conditioners is also increasing. In the air conditioner, the output of the air volume is controlled by the frequency conversion and speed regulation of the fan, which can not only save energy, but also improve the comfort of the air supply. The DC EC (Electrical Commutation, electronic commutation) fan that realizes stepless speed regulation has become a better choice for rail transit air-conditioning fans. [0003] The motor of the EC fan is a DC brushless motor with a built-in intelligent control module, and its essence is an AC permanent magnet synchronous motor. In traditional AC input inverter permanent magnet synchronou...

Claims

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Application Information

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IPC IPC(8): H02P23/14H02P23/00H02P25/024H02P6/28H02P29/032
CPCH02P23/0013H02P23/14H02P2207/05H02P6/28H02P25/024H02P29/032
Inventor 全威张晓菲敖文彬郭春林
Owner GREE ELECTRIC APPLIANCES INC