Pole-following rotor of rotary motor

Abstract

A pole-following rotor of a rotary motor comprises a rotor consisting of a rotating shaft and a laminated core, wherein a plurality of first permanent magnet pole pieces rotating along the axis of the rotating shaft and magnetized in the circumferential direction of the rotor relative to the axis are arranged in the laminated core; a plurality of second permanent magnet pole pieces rotating along the axis of the rotating shaft and magnetized in the radial direction of the rotor relative to the axis are also arranged in the laminated core; the quantity of the second permanent magnet pole pieces is half of that of the first permanent magnet pole pieces; the polarities of the adjacent first permanent magnet pole pieces are opposite, and the polarities of the second permanent magnet pole pieces are the same; the polarity of the second permanent magnet pole pieces is the same as the opposite polarity of the rotor; and the first permanent magnet pole pieces are embedded into the laminated core through first permanent magnet slots, and the second permanent magnet pole pieces are embedded into the laminated core through second permanent magnet slots. The pole-following rotor provided by the invention has a simple and reasonable structure, reduces magnetic leakage of a magnet, improves the utilization ratio of the magnet, solves the problem that the rotating shaft has to be made of stainless steel or a magnetism isolating copper sleeve, and has effectively reduced production cost.

Description

technical field [0001] The invention relates to a rotating electrical machine, in particular to a forward pole rotor of the rotating electrical machine. Background technique [0002] In the prior art, the magnetic flux of each pole of the circumferentially magnetized embedded permanent magnet motor is provided by two permanent magnets connected in parallel, which effectively increases the magnetic flux density in the air gap between the stator and the rotor, thereby increasing the output of the motor, such as figure 1 As shown; however, the utilization rate of the permanent magnet at the bottom is low, and the magnetic flux leakage is abundant, and the rotating shaft often requires stainless steel, or uses a magnetically isolated copper sleeve, such as figure 2 As shown, the cost is very high, which affects the application of this structure rotor. Contents of the invention [0003] The object of the present invention is to provide a parallel pole rotor of a rotating elec...

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Problems solved by technology

[0002] In the prior art, the magnetic flux of each pole of the circumferentially magnetized embedded permanent magnet motor is provided by two permanent magnets connected in parallel, which effectively increases the magnetic flux density in the air gap between the stator and the rotor, thereby increasing the output of the motor, such as figure 1 As shown; however, the utilization rate of the permanent magnet at the bottom is low, and the magnetic flux leakage is abundant, and the rotating shaft often requires stainless steel, or uses a magnetically isolated copper sleeve, such as figure 2 As shown, the cost is very high, which affects the application of this structure rotor

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