Washing machine motor starting control method

Abstract

The invention discloses a washing machine motor starting control method and belongs to the household electrical appliance product field. In the prior art, a washing machine motor can not intelligentlyselect a starting voltage according to a load condition. By using the method of the invention, the above problem is solved. The technical scheme is characterized by prefabricating the comparison table of a clothing weight G-the optimal starting voltage V of a washing machine motor-time T required by the washing machine motor to reach a rated rotation speed after being started with the optimal starting voltage; detecting the time required by the washing machine motor to reach the rated rotation speed after each start to be Tx; and adjusting the starting voltage of the washing machine motor atnext startup by comparing the difference values deltaTx between the Tx and T corresponding to each starting voltage, wherein the first starting voltage of the washing machine motor is determined according to the detected clothing weight in the washing machine. The method is mainly used for increasing the work efficiency of the washing machine motor.

Description

technical field [0001] The invention relates to household electrical appliances, in particular to a method for controlling the startup of a washing machine motor. Background technique [0002] In the process of washing clothes, the existing washing machine needs the motor to drive the inner drum forward and reverse continuously. In the actual use process, there will be various load conditions, such as a small amount of clothes, a medium amount of clothes and A full bucket of laundry requires different torques from the motor under different load conditions. Within a certain range, the starting torque of the motor is determined by the starting voltage. However, in order to ensure that the motor of the washing machine can start normally under all load conditions, the starting voltage that can meet the maximum load conditions is generally used when setting the starting voltage of the motor. Use the same starting voltage. The high starting voltage corresponds to the large star...

AI Technical Summary

Problems solved by technology

However, in order to ensure that the motor of the washing machine can start normally under all load conditions, the starting voltage that can meet the maximum load conditions is generally used when setting the starting voltage of the motor. Use the same starting voltage

The high starting voltage corresponds to the large starting current, which leads to large motor loss and heat generation, and the control circuit of the motor also increases loss and heat generation.

Conversely, after the motor runs hot, the resistance of the motor coil increases, resulting in a decrease in the motor current and starting torque under the same input voltage, resulting in a failure to start the motor under heavy load conditions.