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Frequency conversion drive method, device and computer readable storage medium

A variable frequency drive and drive motor technology, which is applied in computing, household cleaning devices, program control devices, etc., can solve the problems of system inoperability, complicated switching process, and low washing efficiency, so as to avoid system inoperability and complicated switching process performance and improve washing efficiency

Active Publication Date: 2022-02-22
WUHU MIDEA SMART KITCHEN APPLIANCE MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a variable frequency drive method, device and computer-readable storage medium, aiming to solve the problem that frequent frequency switching will cause system errors to fail, and the switching process is complicated, resulting in low washing efficiency.

Method used

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  • Frequency conversion drive method, device and computer readable storage medium
  • Frequency conversion drive method, device and computer readable storage medium
  • Frequency conversion drive method, device and computer readable storage medium

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no. 1 example

[0063] Based on the first embodiment, the second embodiment of the variable frequency drive method of the present invention is proposed, referring to image 3 , in this embodiment, step S30 includes:

[0064] Step S31, obtaining the current working parameters of the motor, comparing the working parameters with a preset threshold, and determining whether the working parameters are normal;

[0065] Step S32, when the working parameter is abnormal, control the motor to stop rotating, wherein the frequency conversion MCU sends the working parameter to the main control MCU, and the main control MCU closes the motor control circuit based on the working parameter.

[0066] In this embodiment, the operating parameters include operating current, operating voltage, operating frequency, etc., and the variable frequency drive MCU monitors in real time whether the operating parameters of the motor are normal, and compares the current operating parameters of the motor with a preset threshol...

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Abstract

The invention discloses a variable frequency driving method, which includes the following steps: if the timing sequence corresponding to the washing mode is detected, the preset frequency is obtained, and the motor is driven to rotate based on the preset frequency, wherein the PCB control board includes a main control MCU and frequency conversion MCU, the main control MCU sends the preset frequency to the frequency conversion MCU; obtains the operating state of the motor, and determines whether the motor is abnormal based on the operating state; if the motor is detected When there is an abnormality, the control motor stops rotating. The invention also discloses a variable frequency driving device and a computer-readable storage medium. The invention realizes the control of the washing program of the dishwasher through the main control MCU and the frequency conversion MCU, thereby avoiding the problems of system inoperability and the complexity of the switching process caused by frequency switching in the case of only one MCU, and improving the washing efficiency.

Description

technical field [0001] The present invention relates to the technical field of variable frequency drive, in particular to a variable frequency drive method, device and computer-readable storage medium. Background technique [0002] At present, an MCU on the PCB board of the dishwasher needs the MCU switching frequency between the processing platform and the variable frequency motor, because the main control frequency and the frequency required by the variable frequency motor are different, and the program is controlled according to the sequence, and the sequence does not involve the motor drive The frequency required by the single-chip microcomputer is not high. Once the timing runs to the time when the frequency conversion motor needs to be turned on, it will switch to a relatively high frequency. Frequent switching of this frequency will cause the system to fail to run due to errors, and the switching process is complicated, resulting in low washing efficiency. [0003] Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A47L15/00A47L15/42G06F9/448
CPCA47L15/0028A47L15/0049A47L15/42A47L15/4274A47L15/4293G06F9/4482
Inventor 李冉
Owner WUHU MIDEA SMART KITCHEN APPLIANCE MFG CO LTD