Mixed-type permanent magnetic pole rotor

Abstract

The invention discloses a mixed-type permanent magnetic pole rotor. The permanent magnetic pole rotor comprises a rotor core, n poles are arranged on the rotor core, each pole has three pieces of magnetic steel, the magnetic steel on each pole is arranged as the combination of a V shape and a horizontal stroke shape, the horizontal stroke shape stands for 1 piece of magnetic steel C and a radial magnetic field, the V shape stands for 2 pieces of magnetic steel D and a tangential magnetic field, and the N and S orientations of the magnetic steel corresponding to the adjacent poles are opposite. According to the mixed-type permanent magnetic pole rotor, the shortcomings of the rotor structure of the radial magnetic field of the magnetic steel and the rotor structure of the magnetic steel tangential field are combined, and the two rotor structure forms are applied simultaneously to the same type of motors, the shortcomings are complemented, and the external characteristics of the overall motor are improved.

Description

technical field [0001] The invention relates to a permanent magnet synchronous motor rotor required in the field of new energy vehicles or in the industrial field, in particular to a hybrid permanent magnet pole rotor. Background technique [0002] In existing permanent magnet synchronous motors, the radial magnetic field of the rotor magnets is "one", "V", "W" and so on. The disadvantage is that it can only form a unidirectional magnetic field, and the magnets per unit volume are not good in terms of torque output. to maximum utilization. [0003] In existing permanent magnet synchronous motors, the rotor magnetic steel has a "1" type or other forms of tangential magnetic field. The disadvantage of the tangential magnetic field is that the magnetic steel is easy to demagnetize under the condition of high-speed weak magnetic field and high temperature. Contents of the invention [0004] The purpose of the present invention is: to synthesize the shortcomings of the rotor s...

AI Technical Summary

Problems solved by technology

[0002] In existing permanent magnet synchronous motors, the radial magnetic field of the rotor magnets is "one", "V", "W" and so on. The disadvantage is that it can only form a unidirectional magnetic field, and the magnets per unit volume are not good in terms of torque output. to maximum utilization

[0003] For existing permanent magnet synchronous motors, the rotor magnets have "1" type or other forms of tangential magnetic field. The disadvantage of tangential magnetic field is that the magnetic steel is easy to demagnetize under the condition of high speed, weak magnetic field and high temperature.

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