Disc-type permanent magnetic coupling mechanism and devices using same

Abstract

The invention relates to a disc-type permanent magnetic coupling mechanism and devices using the same, including a disc-type permanent magnetic coupling speed regulator, a magnetic coupling speed regulation device running at constant power and a brushless doubly-fed coupling transmission device using the same. The mechanism comprises a permanent magnetic rotor and a conductor rotor, the conductor rotor comprises a conductor disc with a groove and a lead wire, induction current in the conductor disc flows in a set direction, and the current is guided to other device outside the conductor disc via the lead wire, so that the current is controlled or utilized. The current or current of the conductor rotor is controlled by a control unit, so that the disc-type permanent magnetic coupling speed regulator regulates the magnitude of the output torque to meet the requirement for rotating speed, and realizes a speed regulation function. The magnetic coupling speed regulation device running at constant power realizes constant power speed regulation operation. The brushless doubly-fed coupling transmission device reduces the radial size and the axial size and saves the installation space of equipment by combining a disc-type structure and an axial structure.

Description

technical field [0001] The invention relates to the technical field of permanent magnetic coupling speed regulation, in particular to a disc type permanent magnetic coupling mechanism and a device using the same. Background technique [0002] The emergence of the permanent magnet coupling speed regulation theory began in the 1980s, and most of the research in the initial stage of this theory focused on the direction of sealing and magnetic transmission connection. Until 1999, the MagnaDrive company in the United States successfully realized the speed regulation of rotating loads such as fans and water pumps by using permanent magnet magnetic couplers, and since then this technology has been promoted. [0003] As a non-contact emerging speed control technology, the permanent magnet coupling speed control technology mainly has the following advantages: ①With clutch function and soft start function; ②No mechanical action, no friction and wear; ③Effective isolation of vibration,...

AI Technical Summary

Problems solved by technology

Therefore, the eddy current permanent magnetic coupler is only suitable for fans and pump loads

[0009] 2) It cannot adjust the speed in a wide range

In the case of large-scale speed regulation, the slip is very large, which means that the slip power is large, which will cause the copper plate to heat up more seriously

Therefore, the eddy current permanent magnet coupler is not suitable for a wide range of speed regulation operation, and is only suitable for occasions where the moment of inertia is small, the speed regulation range is small, and short-term operation

[0010] 3) A mechanical operating mechanism is required

According to the current processing technology at home and abroad, when the diameter of the iron core is greater than 500mm, it will be difficult to ensure the lamination coefficient of the iron core

Limited by the processing technology of the disc core, the power of the winding disc permanent magnetic coupling speed control device is not large, and the manufacturing cost is relatively high

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