Transverse flux permanent magnet motor

Abstract

The invention discloses a transverse flux permanent magnet motor. N stator iron cores are uniformly distributed along the circumferential direction of a radial section, the axial longitudinal section of each stator iron core is E-shaped. Each E-shaped stator iron core is axially provided with two notches and three stator salient pole teeth facing rotor iron cores. Two permanent magnets are axially embedded to a yoke part of each stator iron core. One stator salient pole tooth is arranged between two permanent magnets, the magnetizing directions of two axially-adjacent permanent magnets on the same stator iron core are opposite, and the magnetizing directions of the two adjacent permanent magnets arranged on two radially-adjacent stator iron cores and located at the same radial section are also opposite. One group of annular armature windings is installed in each of the two notches of the stator iron core, and the two groups of annular armature windings are in positive serial connection. The axial section of each rotor iron core is U-shaped, and two rotor iron cores adjacent in radial section are staggered at an interval in the axial direction. According to the invention, the use number of the permanent magnets is reduced, and the utilization rate of the motor flux is improved.

Description

technical field [0001] The invention belongs to the fields of electric engineering and motors, and in particular relates to a permanent magnet motor with mode-directed flux. Background technique [0002] In the prior art, since the teeth and slots of the stator or rotor are on the same cross-section, the sizes of the common permanent magnet motors are mutually restricted, so that the output torque of the motor is limited. For this reason, Professor H.Weh of Germany invented the transverse flux permanent magnet motor. The stator cogging structure and the armature coil of the motor are perpendicular to each other in space, and the main magnetic flux in the motor flows along the axial direction of the motor. Therefore, the size of the stator and the size of the energized coil are independent of each other, and higher torque and power density can be obtained, and because the phases are independent of each other, it is more convenient to design a multi-phase motor to achieve faul...

AI Technical Summary

Problems solved by technology

However, the structure of the existing transverse flux motor still has shortcomings such as low space utilization rate and flux utilization rate, high flux leakage, complicated manufacturing process and high cost, which limit the application of transverse flux permanent magnet motor

For example, Chinese Patent Publication No. 103607059A, titled "Stator Magnetic Flux Switching Transverse Flux Permanent Magnet Wind Power Generator", this generator solves the problems of low space utilization and magnetic flux utilization, but its permanent The magnet runs through the entire stator core, the amount of permanent magnets is high, the overlap between the rotor cores is high, and the amount of silicon steel sheets is high

Chinese Patent Publication No. 101741197A, titled "Flux Switching Type Transverse Flux Permanent Magnet Wind Power Generator", this generator solves the problem of low space utilization of magnetic flux and improves the torque density of the motor, but its permanent The magnet is placed on the rotor core and runs through the entire rotor core, which reduces the mechanical strength of the motor rotor structure, which is not conducive to the heat dissipation of the motor, and has the disadvantages of high permanent magnet consumption

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