Squirrel-cage conductor rotor brushless power feedback type permanent magnet speed regulator

Abstract

The invention discloses a squirrel-cage conductor rotor brushless power feedback type permanent magnet speed regulator which comprises an input shaft connected with a prime motor and an output shaft connected with a load, the input shaft is provided with a permanent magnet rotor in a penetrating mode, and the output shaft is provided with a squirrel-cage structure conductor rotor capable of rotating relatively concentrically in a penetrating mode. A three-phase winding stator fixed on a shell is wound on the outer side of the conductor rotor; the input shaft is connected with the machine shellthrough a first bearing, the output shaft is connected with the machine shell through a second bearing, and the input shaft and the output shaft are connected and supported through a third bearing. The invention can realize the brushless transmission of the slip frequency power of the conductor rotor to the stator side, realizes the high-efficiency operation of the speed regulation system in a wide speed regulation range, and improves the energy-saving efficiency of the speed regulation system.

Description

technical field [0001] The invention belongs to the field of permanent magnet motors, in particular to a squirrel-cage conductor rotor brushless power feedback type permanent magnet governor. Background technique [0002] With the promotion and application of high-performance permanent magnet materials, the permanent magnet speed control technology, which has developed rapidly, is a new type of speed control and energy-saving technology for motor drive systems applied between the prime mover and the load. The speed-regulating permanent magnet coupler has a good energy-saving effect, reduces operating costs, and can also realize the soft start and soft stop functions of the motor. It can operate in harsh environments such as flammable, explosive, humid, and high dust content, and it is a mechanical structure that can adapt to situations such as unstable power grid quality and impact loads caused by current changes. Mainly used in the chemical industry, petrochemical industry...

AI Technical Summary

Problems solved by technology

In addition, the slip power between the two rotors of the traditional permanent magnet eddy current speed control device is consumed in the form of heat energy through the eddy current loss of the conductor rotor conductor. On the one hand, cooling devices must be added to solve the problem of heat dissipation; on the other hand, the slip power It is converted into heat energy and consumed, which reduces the effect of speed regulation and energy saving

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