Hollow inner cooling ventilation structure assembly of salient pole motor rotor

Abstract

The invention belongs to the technical field of generator heat dissipation, and particularly relates to a salient pole motor rotor air inner cooling ventilation structure assembly which comprises a solid rotating shaft with a magnetic pole installation section, the magnetic pole installation section is of a regular prism structure, and each side plane of the magnetic pole installation section is provided with a magnetic pole unit comprising a magnetic pole iron core and a copper bar layer. The windward side and the leeward side of the magnetic pole unit are respectively provided with a ventilation system; the ventilation system comprises an axial air inlet channel and a plurality of air exhaust units, each air exhaust unit comprises a plurality of vertical air guide channels which are formed in the magnetic pole iron core and communicated with the axial air inlet channel, and each vertical air guide channel corresponds to a plurality of transverse air exhaust channels formed in the copper bar layer. According to the technical scheme, under the condition that a rotor support and a magnet yoke do not need to provide a magnet yoke radial ventilation channel, the proper ventilation quantity of air flowing through the interior of a rotor magnetic pole coil can be guaranteed, the heat dissipation effect of a rotor magnetic pole can be effectively improved, and the heat dissipation problem caused by the large magnetic pole thermal load value of a salient pole phase modifier is solved.

Description

technical field [0001] The invention belongs to the technical field of generator heat dissipation, and in particular relates to a salient-pole motor rotor air-inner cooling ventilation structural assembly. Background technique [0002] As a dynamic reactive power compensation device, the condenser can automatically and quickly adjust reactive power according to system requirements, improving the reliability and stability of the power system. A salient pole condenser is a salient pole motor that adjusts reactive power. Fast reactive power response speed is an important feature of a condenser. To improve its reactive power response speed, it is necessary to increase the magnetic pole of the salient pole condenser. Electrical density and thermal load, but higher magnetic pole electrical density and thermal load will cause the pole temperature to rise too high. [0003] Conventional salient pole motors have low magnetic pole density and thermal load, and are cooled by blowing a...

AI Technical Summary

Problems solved by technology

However, the scope of application of this device is limited, that is, the necessary structural parts such as the rotor bracket and the yoke are required to provide the centrifugal pressure head necessary for ventilation and a sufficient number of yoke radial ventilation channels to ensure that the air flows through the inside of the rotor pole coil. Ventilation volume: It is required to install air guide vanes in the yoke ventilation channel to specifically adjust the air volume distribution on the leeward side of the rotor. For rotors without structural features such as rotor brackets and yokes, this device is no longer applicable

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