Axially segmented outer rotor permanent magnet motor propeller with oil internal cooling

Abstract

The invention relates to an axial sectional outer rotor permanent magnet motor propeller with a cooling mode in oil. A propeller body is connected on a shell, one side of the shell is closed by a rearend cover, a fan is fixed onto the rear end cover, a front end cover is fixed onto the other side of the shell, a rotor yoke is connected on the inner periphery of the shell, multi-row circumferential uniform block permanent magnets are arranged on the inner side of the rotor yoke, stators are arranged on the inner sides of the permanent magnets and connected on an inner ring of a stator support,the front end cover is connected on a sleeve, the front end cover and the sleeve are arranged on a bearing in an interference fit manner, a supporting shaft penetrates the bearing, the sleeve, the front end cover, front end cover fan and the inner ring of the bearing is integrally fixed with the stator support, a lead hole for penetrating a load is formed in the axis center of the supporting shaft and sealed by a sealing plug, and an inner cavity of a shell of a motor is fully filled with transformer oil. According to the propeller, stator core loss and eddy-current loss of the permanent magnets are reduced, and heat is more effectively dissipated.

Description

technical field [0001] The invention relates to the field of helicopter propellers, in particular to an axially segmented outer rotor permanent magnet motor propeller with an oil internal cooling method. Background technique [0002] Because rare earth permanent magnet motors have a series of advantages such as small size, light weight, and excellent control characteristics, the technology of rare earth permanent magnet motors has developed rapidly, showing broad application prospects and strong vitality in the aerospace field. The electric helicopter is an aircraft that replaces other forms of secondary energy with electric energy, and is an inevitable trend in the future development of aircraft. With the depletion of oil resources all over the world, oil prices continue to rise, and the oil resources that countries can use are also rapidly decreasing; It is necessary to develop an energy-saving and environment-friendly new energy electric helicopter, and the development o...

AI Technical Summary

Problems solved by technology

[0004] The invention provides an axially segmented outer rotor permanent magnet motor propeller with an oil internal cooling method. Aiming at the problem that the temperature of the motor will be too high during operation, an axially segmented motor topology structure is adopted to reduce the Stator core loss and permanent magnet eddy current loss. At the same time, this structure can more effectively dissipate heat for the permanent magnet motor used in helicopters, keep the permanent magnet motor in a suitable operating temperature range, prevent operation failures, and ensure safe and reliable operation of the motor , to ensure the safety and stability of the motor

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