Motor load tracking synchronous adjusting power saving device

Abstract

Disclosed is a motor load adjusting power saving device for automatically tracking and synchronously controlling motor loads. By constantly detecting voltage, current and power factors of a motor and analyzing load magnitude and variation, electric load is tracked by online detection, and output power of the motor is matched with load torque. When the motor is low in output torque, high in on-load loss and low in efficiency during a no-load or light-load period of the motor, output power and voltage are adjusted simultaneously to enable the output power of the motor to be balanced with the load again. When load of the motor increases, a tracking adjusting device controls the output power to increase so as to guarantee balance of output torque again. Synchronous detection and control enables the motor to operate stably, no instant overcurrent occurs, redundant electric energy consumption of the motor is reduced while power supply frequency is unchanged, unnecessary waste is restrained, energy saving is achieved, and the service life of the motor is prolonged.

Description

technical field [0001] The invention relates to a power-saving device that adjusts and controls the output power synchronously with the change of the motor load, especially the synchronous detection and control can improve the stability and efficiency of the motor, prevent the motor from generating instantaneous overcurrent, and suppress unnecessary power waste The motor load tracking synchronously regulates the economizer. Background technique [0002] At present, in the article "Research and Application of Motor Load Regulation Device" in the well-known "National Science and Technology Information Service Network-Henan Node": "The motor load regulation control device is based on the dynamic tracking of the motor load, and timely detects the load of the motor. , by constantly detecting and controlling the power factor, voltage and current of the motor, analyzing the load size and change trend, calculating the optimal voltage and current for the asynchronous motor, and contr...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings that the existing motor load adjustment control device is not suitable for high-power motors, the detection rate and response speed are slow, and the motor with a sudden increase in load produces an instantaneous sudden change current that affects the service life of the motor, the invention provides a motor load tracking Synchronous regulation power-saving device, the motor load tracking synchronous regulation power-saving device is not only suitable for three-phase asynchronous motors of all power levels, but also adopts direct control method to complete the detection and control synchronously, so that the motor will not produce instantaneous sudden change of current, Increased power saving efficiency

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