Round laminated rotor structure for salient pole synchronous motor

Abstract

The invention relates to a round laminated rotor structure for a salient pole synchronous motor. The structure comprises laminated iron core stampings, a damping rod and a pole coil, wherein the laminated iron core stampings are round stampings; a magnetic pole on the stampings is radial; a round damping hole for placing the damping rod is stamped on the magnetic pole; and the damping rod and the pole coil are respectively arranged in the damping hole and the pole body of the magnetic pole. The round laminated rotor structure for the salient pole synchronous motor has a simple structure and high reliability and fills a gap of a laminated rotor for a large-scale high-speed salient pole synchronous motor in domestic motor industry.

Description

technical field [0001] The invention relates to a salient-pole synchronous motor rotor, in particular to a large-scale high-speed salient-pole synchronous motor rotor. Background technique [0002] At present, the main drive mills of steel rolling high-speed wire rod engineering all use synchronous motors with a speed of 1000-1500rpm, or even 1800rpm. Due to the high speed and limited by the insufficient strength of the rotor laminated magnetic poles, domestic motor manufacturers have made synchronous motors with solid magnetic poles to solve the problem of insufficient strength of the laminated magnetic poles. However, the pole shoes of the solid magnetic pole synchronous motor are fastened to the solid magnetic pole with a certain number of bolts, which has certain potential safety hazards. Moreover, when the solid magnetic pole synchronous motor is equipped with a voltage-type frequency converter, due to the large harmonic content in the power supply, the The surface of ...

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Problems solved by technology

However, the pole shoes of the solid magnetic pole synchronous motor are fastened to the solid magnetic pole with a certain number of bolts, which has certain potential safety hazards. Moreover, when the solid magnetic pole synchronous motor is equipped with a voltage-type frequency converter, due to the large harmonic content in the power supply, the The surface of the solid pole will generate a large additional loss, which will cause the surface of the pole piece to overheat and even burn out the insulation of the pole coil, thus causing serious burn-in accidents

In addition, due to the high surface temperature of the pole shoe, the bolts tightening the pole shoe will also heat up, thereby greatly increasing its tensile stress. When the centrifugal force of the pole shoe is greater than the tensile force that the bolt can bear, the bolt will be pulled off, causing serious accidents

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