A segmented rotor switched reluctance motor

Abstract

The invention discloses a segmented rotor switched reluctance motor. The motor is composed of a stator, a rotor and a coil; Stator tooth number is 9n, rotor pole number is m, phase number is 3, n is natural number, m is equal to 4n, 5n or 6n; The rotor is composed of m rotor cores and one non-magnetic permeable support frame, and the rotor core is fixed on the non-magnetic permeable support frame;The stator teeth comprise 3n wide teeth and 6n narrow teeth, 9n stator teeth are uniformly arranged, the difference between adjacent stator teeth is 40 DEG/n, the difference between wide teeth and wide teeth is 120 DEG/n, and two narrow teeth are arranged between wide teeth and wide teeth; 1 coil is wound on each narrow tooth, a wireless coil on that wide tooth, the coil on the adjacent two narrow tooth belong to the same phase winding, and the magnetic field polarity generated by all the coils is the same; Each phase is short magnetic circuit, and the loss of iron core is small. The phase-to-phase magnetic circuit intersects only on the wide tooth chains, and the coupling between the two phases is weak. As that motor of the invention has a plurality of rotor pole number, the stator and the rotor pole numbers can be conveniently selected according to the specific application situation so as to achieve the b output performance.

Description

technical field [0001] The invention relates to a segmented rotor switched reluctance motor, which belongs to the technical field of motor-type switched reluctance motors. Background technique [0002] The stator and rotor of the switched reluctance motor are double-salient pole structures, and the rotor has no windings and permanent magnets. It has the characteristics of simple and firm structure, low cost, high temperature resistance and high-speed adaptability. It is widely used in civilian fields. [0003] However, due to the salient pole structure of the rotor, the wind loss of the switched reluctance motor is greater, and the problem of vibration and noise is further aggravated, which weakens its application in the field of low noise. To this end, people have proposed a segmented rotor switched reluctance motor (Segmented Switched Reluctance Motor), in order to reduce wind resistance loss and reduce noise. The rotor of the segmented rotor switched reluctance motor ha...

AI Technical Summary

Problems solved by technology

However, traditional segmented rotor switched reluctance motors usually adopt classic structures such as 6 / 4, 8 / 6, 12 / 8, and 12 / 10 poles. Based on the requirements of the operating mechanism, the interphase magnetic circuits of these structures have strong coupling. The mutual inductance between the phases is large, and the mutual inductance torque generated by the mutual inductance is also large, resulting in an increase in torque ripple; in addition, the phase-to-phase coupling also reduces the fault tolerance and reliability of the motor

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