Parameter control system and motor including the parameter control system

A parameter control system for a motor used in a compressor with a frequency converter, comprising:

• a current acquisition circuit connected to the motor, configured to acquire a current output by the motor;
• an arithmetic processor configured to determine whether to adjust a parameter of the motor according to a difference between the current acquired and a previous acquired current, and generate a new parameter by adding or subtracting a control step to or from the parameter of the motor when it is determined to adjust the parameter of the motor to improve motor control accuracy;
• and
• an output circuit configured to output the new parameter generated by the arithmetic processor to a control device of the motor;
• wherein the arithmetic processor is configured to:
• compare the current acquired with a previous acquired current;
• and
• subtract a control step of the parameter of the motor from the parameter to generate the new parameter if the current acquired is greater than the previous acquired current and a difference between the current acquired and the previous acquired current exceeds a threshold;
• add a control step of the parameter of the motor to the parameter to generate the new parameter if the current acquired is less than the previous acquired current and a difference between the previous acquired current and the current acquired exceeds the threshold.