A New Type of Permanent Magnet Governor Using Rotating Salient Pole to Regulate Magnetic Flux

Abstract

The present invention discloses a novel permanent magnet speed regulator using a rotary salient pole to adjust magnetic flux. The novel permanent magnet speed regulator comprises a driving shaft and a driven shaft, the driving shaft is fixedly equipped with a cylindrical conductor rotor, and a permanent magnet rotor of which one end is fixed to the driven shaft is arranged in a chamber formed by the cylindrical conductor rotor. Moreover, a radial gap exists between the permanent magnet rotor and the cylindrical conductor rotor, a ratchet wheel sleeve rotating together with the driven shaft and a salient pole magnetic conductive magnet yoke capable of rotating relatively on the ratchet wheel sleeve are arranged at the lower part of the other end of the permanent magnet rotor, and a plurality of tangential permanent magnet magnetic steels are arranged in the permanent magnet rotor at equal intervals. According to the present invention, the problem that a conventional cylindrical permanent magnet speed regulator adjusts the relative positions of the permanent magnet rotor and the cylindrical conductor rotor in an axial direction to reduce the large the occupied space of an effective part of the coupling area of the permanent magnet rotor and the conductor rotor is avoided, an additional axial space is not needed, and an adjusting mechanism, such as an additional complicated cylinder is also not needed, so that the whole speed regulator is more compact and reasonable in structure, and a transmission torque under the same size is improved substantially.

Description

technical field [0001] The invention relates to a drive speed regulating device, in particular to a speed regulating device which utilizes electromagnetically induced eddy current for torque transmission. Background technique [0002] In large-scale mining, petrochemical, electric power and metallurgy industries, due to the needs of energy saving and environmental protection, the application of permanent magnet speed control devices is becoming more and more widespread. The permanent magnet speed control device can adapt to various harsh environments, including places with large grid voltage fluctuations, serious harmonics, flammable, explosive, humid, dusty, etc., and can adjust the speed of the load online to meet the actual operation needs of the system and realize speed regulation Energy saving, the energy saving rate is 10%~65%. [0003] The existing permanent magnet governor mainly includes cylindrical permanent magnet governor and disc permanent magnet governor. To ...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a new type of permanent magnet governor with rotating salient poles to adjust the magnetic flux, which avoids the traditional cylindrical permanent magnet governor by adjusting the axial direction of the permanent magnet rotor and the cylindrical conductor rotor. The problem that the effective part of the coupling area of ​​the permanent magnet rotor and the conductor rotor is adjusted by the relative position occupies a large space, no additional axial space is required, and no additional complicated adjustment mechanisms such as cylinders are required, which makes the structure of the entire governor more efficient. Compact and reasonable, the transmission torque is greatly improved under the same volume

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