Axially parallel hybrid rotor motor

Abstract

The invention discloses an axially parallel hybrid rotor motor, which comprises a stator (1), a permanent magnetic rotor (2) and a reluctance rotor (3). The permanent magnetic rotor (2) and the reluctance rotor (3) are characterized in that the two rotors are in an axially parallel relation spatially and are coaxially installed, and angle deviation exists between axial lines in straight axes of the two rotors. The stator (1) is arranged outside the permanent magnetic rotor (2) and the reluctance rotor (3), and comprises armature core teeth (1.1), a stator yoke (1.2) and an armature winding (4)arranged on the armature core teeth (1.1). The permanent magnetic rotor (2) comprises surface-mounted NbFeB permanent magnets (2.1) and a rotor core back yoke (2.2). The reluctance rotor (3) is of amulti-layer magnetic barrier structure, and comprises a rotor core (3.1), an air groove (3.2) and magnetic conductive bridges (3.3). The axially parallel hybrid rotor motor can solve the vulnerabilityof low utilization rate of permanent-magnet torque component and reluctance torque component of a traditional built-in permanent magnet motor, and realizes the effect that permanent-magnet torque component and reluctance torque component reach the maximum at the same inner power factor angle by means of straight axis deviation of the two rotors, so as to increase torque density; and the permanentmagnetic rotor is convenient in installation and high in mechanical strength, thereby being conducive to high-speed operation.

Description

[0001] Field [0002] The invention relates to a permanent magnet motor technology and belongs to the technical field of hybrid rotor motors. Background technique [0003] Permanent Magnet Synchronous Machine (PMSM) has the advantages of high power density, high efficiency, reliable operation and strong overload capacity due to the use of traditional rare earth permanent magnet materials with high magnetic energy product (such as NdFeB). important direction of development. Thanks to the development of rare earth permanent magnet materials and power electronics technology, PMSM has largely replaced electric excitation motors in the small and medium power field, and has been widely used in various fields such as aerospace, national defense, industrial and agricultural production, and daily life. [0004] The built-in PMSM places the permanent magnet inside the reluctance rotor. Due to the existence of its salient pole torque, it can realize the improvement of torque density and...

AI Technical Summary

Problems solved by technology

[0006] Technical problem: The technical problem to be solved by the present invention is to provide an axial parallel hybrid rotor motor to solve the internal problem when both the permanent magnet torque component and the reluctance torque component of the traditional built-in permanent magnet motor for electric vehicles reach the maximum. The power factor angle is not equal, the utilization rate is not high, the torque density is limited, the permanent magnet installation is inconvenient, the magnetic flux leakage is large, and the mechanical strength is not enough.

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