Energy-saving speed-regulating permanent magnet driver

Abstract

The invention relates to an energy-saving speed-regulating permanent magnet driver, which comprises a speed-regulating device. The speed-regulating device is arranged along an axial direction of a motor shaft and a load shaft; the motor shaft and the load shaft are positioned on the same central axis; and a gap is formed between the motor shaft and the load shaft. The speed-regulating device comprises a copper rotor, a permanent magnet rotor and a controller, wherein the copper rotor is fixed on the load shaft; the permanent magnet rotor is fixed on the motor through a bracket; and an air gapis formed between the copper rotor and the permanent magnet rotor. When the motor rotates, the motor drives the permanent magnet rotor to rotate and induction current is formed in the permanent magnet rotor, an induction field is generated in the air gap, and the induction field makes the copper rotor rotate along with the induction field to realize torque transmission. Meanwhile, the width of the air gap between the copper rotor and the permanent magnet rotor is regulated by the controller, and the rotating speed of the loading end can be changed. The energy-saving speed-regulating permanentmagnet driver has the advantages of no mechanical connection between the motor shaft and the load shaft, capacity of realizing wireless variable speed operation, high efficiency, automation and energy conservation.

Description

technical field [0001] The invention relates to a driver, in particular to an energy-saving speed-regulating permanent magnet driver. Background technique [0002] At present, after the motor is powered on, it is directly started under the full load state without any buffer starting device, which may easily cause the motor to stall. That is to say, when the motor is normal and the power supply of the motor is normal, the motor cannot work and run normally due to the heavy load of the motor. At the same time, frequent motor stalls will shorten the life of the equipment and lead to low work efficiency. , affecting work progress. [0003] In addition, the existing permanent magnet drive works at 1,000 kilowatts, and consumes 1 kilowatt-hour of electricity in one hour, saving energy by up to 10% to 15%. When it is in standby, because the motor is always powered on, the permanent magnet drive also consumes power all the time. , poor energy saving. When the motor is not working...

AI Technical Summary

Problems solved by technology

[0002] At present, after the motor is powered on, it starts directly under the state of full load, without any buffer starting device, which may easily cause the motor to stall

That is to say, when the motor is normal and the power supply of the motor is normal, the motor cannot work and run normally due to the heavy load of the motor. At the same time, frequent motor stalls will shorten the life of the equipment and lead to low work efficiency. , affecting work progress

[0003] In addition, the existing permanent magnet drive works at 1,000 kilowatts, and consumes 1 kilowatt-hour of electricity in one hour, saving energy by up to 10% to 15%. When it is in standby, because the motor is always powered on, the permanent magnet drive also consumes power all the time. , poor energy saving

When the motor is not working at full load, it will also consume the same amount of electricity, which cannot save electricity

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