Alternating hybrid excitation component and application thereof in motor and transformer

Abstract

The invention relates to an alternating hybrid excitation component and an application of the alternating hybrid excitation component in a rotary motor, a linear motor and a transformer. The alternating hybrid excitation component comprises even-number layers of iron cores and a plurality of magnetic isolation layers, wherein the magnetic isolation layers are arranged between the layers of the iron cores, the even-number layers of the iron cores and the magnetic isolation layers form the shape of a closed loop or an open loop, one or two gaps are formed in each layer of the iron core, a permanent magnet is inlaid at the gap in each layer of the iron core, two magnetic pole faces of the permanent magnet are clung to two opposite sides of the gap of the iron core, and a clearance is left between one lateral surface of the permanent magnet and the lateral side of the gap of the iron core; furthermore, the magnetic polarity directions of the permanent magnets inlaid at the gaps in every two adjacent layers of the iron cores are different, and exciting coils in a same set surround the periphery of each layer of the iron core. The alternating hybrid excitation component superposes permanent magnet magnetic potentials and excitation magnetic potentials to form an alternating hybrid excitation magnetic field, so that the electromagnetic energy efficiency can be improved. The invention further provides examples of the alternating hybrid excitation component applied to the rotary motor, the linear motor and the transformer.

Description

technical field [0001] The invention relates to motor technology, in particular to a compound excitation component capable of generating alternating compound magnetic fields, an alternating compound excitation rotating motor, a linear motor and an alternating compound excitation gain transformer device constructed by using the component. Background technique [0002] In the traditional switched reluctance motor stator, the permanent magnetic potential of the permanent magnet and the excitation magnetic potential of the exciter are combined to act on the motor rotor, which creates a new technical approach for improving the efficiency of the motor. Chinese patent CN201010102546.x (Nanjing University of Aeronautics and Astronautics) discloses a mixed excitation block stator and rotor switched reluctance motor. The motor inserts permanent magnets between the two stator tooth slots of the U-shaped stator block, and the excitation coil is wound On the yoke of the U-shaped stator b...

AI Technical Summary

Problems solved by technology

When an alternating excitation current is input into the excitation coil, if a permanent magnet is embedded in the single iron core, the compound excitation magnetic field can only be generated under the excitation condition of the excitation current in a certain direction, and the magnetic field cannot be obtained at the magnetic pole surface of the single iron core. An alternating magnetic field of equal strength

If two permanent magnets with opposite magnetic poles are embedded in the single core, when an alternating excitation current is input into the excitation coil, the magnetic circuit interference between the two permanent magnets and the excitation field will partially reduce the excitation and permanent magnet recombination efficiency , thus reducing the contribution of the permanent magnet field to the composite excitation potential

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