Permanent magnet speed controller

Abstract

Disclosed is a cylindrical permanent magnet speed controller, comprising a first shaft and second shaft which are separate and coaxial. The first shaft is sleeved with an annular permanent magnet rotating disc. The second shaft is sleeved with an annular shaft sleeve. The shaft sleeve is sleeved with a cylindrical inner circular sleeve. The inner circular sleeve is sleeved with an annular conductor rotating disc. The cylindrical permanent magnet speed controller is characterized in that the outer edge of the permanent magnet rotating disc is fixedly connected with two coaxial cylindrical projections which are an outer cylinder remote from the first shaft and an inner cylinder adjacent to the first shaft, a gap is left between the outer cylinder and the inner cylinder, and an outer conductor cylinder and an inner conductor cylinder are respectively fixed on the inner surface of the outer conductor cylinder and the outer surface of the inner conductor cylinder; and the outer edge of the conductor rotating disc is fixedly connected with a cylindrical magnet carrier of non-magnetic material, a plurality of permanent magnets are installed in a surrounding manner on the circumferential surface of the magnet carrier, the magnetic pole direction of each permanent magnet is perpendicular to the permanent magnet rotating disc, the adjacent permanent magnets are subjected to heterpolar installation, and the magnet carrier extends between the inner conductor cylinder and the outer conductor cylinder.

Description

technical field [0001] The invention relates to a driving speed regulating device, in particular to a permanent magnet speed regulating device. Background technique [0002] Existing motor systems, especially centrifugal equipment systems, mainly use the following methods to regulate flow and pressure: damper baffles, valves, hydraulic couplings, frequency converters, and internal feedback chopper speed regulation. Dampers and valves are traditional methods, which can effectively adjust the flow or pressure, but the disadvantages are also obvious: they are not energy-saving, and they are easy to cause shocks in the system. Although the hydraulic coupling can adjust the speed and save energy to a certain extent, its efficiency is low and it is not stable enough. Inverter and internal feedback chopper speed regulation use the method of directly changing the motor speed to adjust the system and load, which has high efficiency and good energy-saving effect, but because there ar...

AI Technical Summary

Problems solved by technology

Although the hydraulic coupling can adjust the speed and save energy to a certain extent, its efficiency is low and it is not stable enough

Inverter and internal feedback chopper speed regulation use the method of directly changing the motor speed to adjust the system and load, which has high efficiency and good energy-saving effect, but because there are many electrical components and many fault points, it has high environmental requirements and life cycle Short, and complex harmonic interference to the environment, high maintenance and treatment costs

[0003] In this case, the permanent magnet governor is a new type of ideal choice in the field of motor speed regulation; but because the coupling surface of the ordinary flat-plate turntable permanent magnet governor is flat, the relative area is small, and the torque is small, so the axial The force is relatively large; and because the product is heavy, the quality requirements for the bearing are high and it is easy to damage

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