Transverse-flux magnetic field modulation type linear motor

Abstract

The present invention discloses a transverse-flux magnetic field modulation type linear motor. The transverse-flux magnetic field modulation type linear motor comprises a primary side and a secondary side; the secondary side comprises secondary iron cores and permanent magnets; the two secondary iron cores are C-shaped and are arranged in a mirror-image manner; the permanent magnets are evenly distributed on three surfaces of the inner side of each secondary iron core; a three-surface air gap exists between the primary side and the secondary side; the primary side includes two identical primary iron cores and a connection beam which is connected with the two primary iron cores; a plurality of identical salient pole teeth are equidistantly distributed on each of the upper surfaces and lower surfaces of the primary iron cores and opposite surfaces of the connection beam; equidistant dummy teeth are formed in ends of the salient pole teeth which are adjacent to the air gap; the width of the dummy teeth is equal to the width of dummy slots between the dummy teeth; the salient pole teeth are wound with armature windings; three phases of the primary side are wound with three-phase armature windings respectively; and the number of the dummy teeth is equal to the sum of the number of the pole-pairs of the permanent teeth and the number of the pole-pairs of the armature windings. According to the transverse-flux magnetic field modulation type linear motor of the invention, the dummy teeth can great facilitate the adjustment of a magnetic flux loop, so that useful harmonic waves are greatly improved.

Description

technical field [0001] The invention relates to a magnetic field modulation type linear motor, in particular to a transverse flux magnetic field modulation type linear motor. Background technique [0002] The linear direct drive motion system eliminates the need for complex mechanical conversion devices. The system has a simple structure, reliable operation, fast response and high control precision. It has a wide range of needs and applications in military and civilian industries such as aviation and aerospace. As the core component of the linear direct drive motion system, the linear motor has always been the preferred electric drive solution for the linear direct drive motion system, and it is also an effective means to solve the above problems. The linear motor based on magnetic field modulation has been developed rapidly due to its advantages of compact structure, high power density and high efficiency, but there is coupling between the phases of the magnetic field, and ...

AI Technical Summary

Problems solved by technology

The linear motor based on magnetic field modulation has been developed rapidly due to its advantages of compact structure, high power density and high efficiency, but there is coupling between the phases of the magnetic field, and the fault tolerance performance is reduced. Therefore, a transverse flux magnetic field modulation is proposed. On the one hand, the armature winding and the stator slots are perpendicular to each other in space, which realizes the decoupling of the electric load and the magnetic load, and can increase the output by increasing the rate of change of magnetic energy within a certain range; on the other hand, each phase They are decoupled from each other, which is convenient for independent control, and is easy to design into a multi-phase structure. In multi-phase operation, even if one phase is missing, it can work normally. The fault tolerance performance is good, and the reliability of the motor is improved.

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