Control device, control system, and machine learning device

A control device configured to control a peak-cut operation of a motor for peak cut connected to one and the same power supply path with at least one industrial machine, the control device comprising:

• a data acquisition unit configured to acquire data on at least an operating state of the industrial machine;
• a learning model storage unit configured to store a learning model in which the value of a setting action for a base speed of the motor for peak cut is associated with the operating state of the industrial machine;
• and
• a decision making unit configured to settle the setting action for the base speed of the motor for peak cut based on the data on the operating state of the industrial machine acquired by the data acquisition unit, by using the learning model stored in the learning model storage unit.