Permanent magnetic synchronous motor

Abstract

The invention relates to a novel permanent magnetic synchronous motor, which is mainly applied to high-energy-consumption industries such as iron and steel, electrical power, petrochemical engineering, machinery and the like. The novel permanent magnetic synchronous motor mainly comprises a stator and a rotor assembly, wherein the rotor assembly comprises a rotating shaft, an inner lining sleeve is fixedly connected in the middle part of the rotating shaft through a flat key, the outer side of the inner lining sleeve is fixedly connected with permanent magnet steel and a shaft sleeve, the shaft sleeve is divided into a plurality of blocks which are fixedly connected with the inner lining sleeve through fastening connecting elements, gaps are arranged between the shaft sleeve cutting blocks divided by the shaft sleeve, permanent magnetic steel is fixedly embedded in the gaps, the permanent magnetic steel can be set into four blocks, six blocks or eight blocks according to the step number of the motor, and the fastening connecting elements can adopt screw bolts and splayed pins. The novel permanent magnetic synchronous motor uses permanent magnets for replacing electric magnetic excitation magnetic poles, realizes the brushless structure, reduces the size of a rotor, omits a magnetic excitation DC power supply, and greatly improves the efficiency of the motor, and the power factor of the novel permanent magnetic synchronous motor is greatly higher than the power factor of an asynchronous motor.

Description

technical field [0001] The present invention relates to a permanent magnet synchronous motor, in particular to a rare earth neodymium-iron-boron (Nd-Fe-B) material with a high magnetic energy product as a rotor, and permanent magnets are used instead of electric excitation poles to realize a brushless structure and reduce the The size of the rotor is small, and the excitation DC power supply is omitted at the same time. It is a new type of permanent magnet synchronous motor with high efficiency, energy saving and consumption reduction with excellent linear torque control characteristics. Background technique [0002] The novel permanent magnet synchronous motor of the invention is mainly used in industries with high energy consumption such as iron and steel, electric power, petrochemical industry and machinery. At present, on the AC power grid, people also widely use AC asynchronous motors to drive working machinery. AC asynchronous motor has the advantages of simple struct...

AI Technical Summary

Problems solved by technology

In order to realize the self-starting of the permanent magnet motor, a squirrel-cage structure is adopted on the rotor, which is commonly referred to as an asynchronous starting permanent magnet synchronous motor, but this kind of motor has the problem of being difficult to pull into synchronization. problems and the current small capacity of permanent magnet motors, a high-power permanent magnet synchronous motor with a new rotor structure is proposed

In addition, the demagnetization phenomenon of permanent magnet synchronous motors has not been effectively solved, so that it has not been widely used in the market

[0006] This shows that the above-mentioned existing permanent magnet synchronous motor obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently.

In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but for a long time no suitable design has been developed, and the general product has no suitable structure to solve the above-mentioned problems. This is obviously the relevant industry. Urgent problem

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