Method and device for controlling a motor
A control method and field weakening control technology, applied in the computer field, can solve the problems of long time required for the motor, circuit damage, voltage rise, etc., and achieve the effect of shortening the consumption time and prolonging the service life.
Active Publication Date: 2021-09-24
SICHUAN HONGMEI INTELLIGENT TECH CO LTD
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Problems solved by technology
In order to avoid the risk of causing damage to the circuit due to the current gathering on the DC side capacitor due to the current gathering on the DC side due to too fast deceleration, the process of controlling the dehydration of the motor is relatively slow, which makes the motor complete from dehydration to dehydration. Longer time required to eventually stop
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[0050] 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.
[0051] Such as figure 1 As shown, the embodiment of the present invention provides a motor control method, the method may include the following steps:
[0052] Step 101: Collect the real-time rotational speed of the motor, and determine an intermediate rotational speed according to the real-time rotational speed; wherein, the intermediate rotational sp...
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The present invention provides a motor control method and device, which includes: collecting the real-time rotational speed of the motor, and determining an intermediate rotational speed according to the real-time rotational speed; wherein, the intermediate rotational speed is smaller than the real-time rotational speed; according to the The intermediate speed is controlled by a field-weakening control method to control the deceleration of the motor; when the real-time speed of the motor is not greater than the intermediate speed, the d-axis command current of the motor obtained by the field-weakening control method is used to determine the and make the q-axis command current a negative value; according to the negative q-axis command current, the motor is controlled to decelerate. This solution can shorten the time for the motor to slow down, thereby shortening the time consumed by the washing machine from the completion of dehydration to the stop.
Description
technical field [0001] The invention relates to the field of computer technology, in particular to a motor control method and device. Background technique [0002] The speed of the drum washing machine during the dehydration process is relatively high, generally 1400rpm-1600rpm. To stop the high-speed washing machine after the dehydration is completed, the motor of the washing machine needs to be braked. [0003] At present, the motor is generally controlled to reduce the speed by gradually reducing the command speed of the motor until the motor stops. In order to avoid the risk of causing damage to the circuit due to the current gathering on the DC side capacitor due to the current gathering on the DC side due to too fast deceleration, the process of controlling the dehydration of the motor is relatively slow, which makes the motor complete from dehydration to dehydration. It takes longer to finally stop. Contents of the invention [0004] Embodiments of the present in...
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IPC IPC(8): H02P21/36
CPCH02P21/36
Inventor 任艳华潘军唐婷婷朱绯王声纲杨正
Owner SICHUAN HONGMEI INTELLIGENT TECH CO LTD