Motor step-down power-saving device and intelligent AC induction motor system

Abstract

The invention provides a motor step-down power-saving device and an intelligent AC induction motor system, line voltage real-time monitoring data, line current real-time monitoring data and motor environment real-time monitoring data of a target AC induction motor are monitored and collected through a motor monitoring module, and a motor control module, such as a microcontroller, is used for controlling the voltage of the target AC induction motor. When it is judged that the target AC induction motor meets the voltage reduction and power saving conditions, a target line voltage effective value of the target AC induction motor is calculated based on a pre-trained motor voltage regulation parameter prediction model, and a voltage regulation control signal is generated according to the target line voltage effective value so as to control a motor voltage regulation module to adjust the terminal voltage of the target AC induction motor to the target line voltage effective value; therefore, the terminal voltage and the stator current input into the target alternating-current induction motor are adjusted in time by applying the optimal control principle, so that the target alternating-current induction motor is always in the optimal working state, the motor energy consumption is reduced, and the motor efficiency and the power saving rate are improved.