Direct driving permanent magnet type magnetic resistance motor

Abstract

This invention discloses a direct drive permanent magnetic reluctance machine including rotor core, external stator excitation winding, inner stator excitation winding, sliaft, inner stator core, rotor keep frame, a bearing, bearing, and outer stator core among which, spline and spline are opened on internal and external cycles of the rotor core laminated by silicon steel sheets, permanent magnet is included, several uniform-distributed splines are opened on the surface of pole, splines on the surface of pole, strip magnet is iserted insplines and permanent magnet has a magnetic field along the tangent of, eliminating leackage in slot and increasing flux density of tooth.

Description

technical field [0001] The present invention relates to a direct drive reluctance motor. Background technique [0002] In the existing direct drive reluctance motor, as shown in FIG. 1 , the rotor 2 of the motor has a thin-walled cup-shaped structure and is placed between two concentric stators. By sequentially energizing the magnetic poles, the rotor 2 interacts with the stator to generate torque. Because the inner and outer stators interact with the rotor at the same time, the torque per unit core mass increases. The magnetic flux passes through the thin-walled rotor 2 to the inner stator 3 in the radial direction from the outer stator 1. The magnetic circuit of the rotor is very short and the magnetic resistance of the magnetic circuit is very low. In this way, the magnetic flux generated by the unit ampere-turn of the motor is relatively high, and the motor has a high torque. , but there is some leakage magnetic flux at the slot 1-2 on the surface of the large pole 1-1...

AI Technical Summary

Problems solved by technology

The magnetic flux passes through the thin-walled rotor 2 to the inner stator 3 in the radial direction from the outer stator 1. The magnetic circuit of the rotor is very short and the magnetic resistance of the magnetic circuit is very low. In this way, the magnetic flux generated by the unit ampere-turn of the motor is relatively high, and the motor has a high torque. , but there is some leakage magnetic flux at the slot 1-2 on the surface of the large pole 1-1 of the outer stator 1 and the slot 3-2 on the surface of the large pole 3-1 of the inner stator 3. Therefore, in order to obtain a large torque, Large excitation power is required, which limits the performance-to-volume ratio of the motor and increases the cost of the drive system

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