Bearingless switched reluctance linear motor

Abstract

The invention provides a bearingless switched reluctance linear motor. The bearingless switched reluctance linear motor comprises a stator unit and a rotor unit, the rotor unit comprises a supportingshaft and a plurality of rotor salient poles coaxially and fixedly sleeving the supporting shaft, the rotor salient poles are arranged at equal intervals in the axial direction of the supporting shaft, and each rotor salient pole is of a polygonal prism structure; the stator unit comprises a plurality of stators which are arranged at equal intervals in the axial direction of the supporting shaft,and insulating check rings are arranged between the adjacent stators. The stator is provided with a plurality of salient poles, the salient poles are evenly arranged in the circumferential direction of the stator at equal intervals, the number of the salient poles is equal to and corresponds to the number of the surfaces of the polygon prism, the salient poles of the stator are provided with excitation windings, and the salient poles of the stator located at the two ends of the stator unit are provided with suspension windings, so that the reluctance motor can form a complete magnetic flux loop, the magnetic flux leakage phenomenon is effectively avoided, the power stability of the reluctance motor is ensured, the torque ripple and vibration can be effectively reduced, and the stability ofthe whole reluctance motor is ensured.

Description

technical field [0001] The invention relates to a linear motor, in particular to a bearingless switched reluctance linear motor. Background technique [0002] Linear motors can directly convert electrical energy into mechanical energy for linear motion, and can eliminate various errors caused by intermediate conversion or transmission links. In recent years, they have been widely used in the field of linear motion as a substitute for traditional rotary motors. Traditional linear motors need to support the motor mover through linear bearings for high-speed reciprocating mechanical movement, but long-term wear of linear bearings will affect the efficiency of linear motors, reduce the reliability of work, and even make the motor scrapped in advance. Therefore, choosing the bearingless magnetic levitation technology to replace the linear bearing is an excellent means to solve the above problems. At present, the most widely used type of linear motor in the industrial field is th...

AI Technical Summary

Problems solved by technology

[0003] However, the existing switched reluctance motor has the following defects: the control system of the switched reluctance motor is more complicated than other types of motors, including devices such as position detectors, and the switched reluctance motor has a double salient pole structure. There are inevitably torque fluctuations and vibration noise; more importantly: the existing structure of the switched reluctance motor has a magnetic flux leakage phenomenon, which makes the power stability of the switched reluctance motor poor

Images