Permanent-magnet multiplied-pole switch reluctance motor

Abstract

The invention relates to a permanent-magnet multiplied-pole generator for a switched reluctance motor. The generator comprises a motor housing, a motor shaft stretching end, a motor shaft non-stretching end, and a stator and a rotor which have double-salient pole structures and are formed by laminating silicon steel sheets, and is characterized in that: a stator core and a rotor core consist of single-segmented two phases or single-segmented three phases; the length and diameter of the stator core are equal to those of the rotor core; a first segment stator core comprises a first segment stator magnet yoke, a first segment stator magnetic pole and first segment stator magnetic pole windings; two sets of centralized or layered first segment stator magnetic pole windings are arranged on thefirst segment stator magnetic pole; armature windings on the two magnetic poles of every set of the winding, which are in the same phase, are connected in series or in parallel to form one phase; andthe first segment rotor core comprises a first segment rotor permanent magnetic pole, a first segment rotor armature magnet yoke, a first segment stator electrically-excited magnetic pole, a first segment stator electrically-excited magnetic pole winding and the shaft hole of the first segment rotor, which is provided with a key groove. The permanent-magnet multiplied-pole generator for the switched reluctance motor is characterized by high efficiency and speed and energy conservation, and has a wide speed regulating range and a wide application range.

Description

technical field [0001] The invention belongs to the field of switched reluctance motors, in particular to a permanent magnet double pole switched reluctance motor. Background technique [0002] At present, the switched reluctance motor is a double-salient switching motor, and its stator poles are wound with concentrated windings; the motor can be divided into three-phase, four-phase and multi-phase switched reluctance motors according to the number of phases. Phase 6 / 4, 12 / 8, and 4-phase 8 / 6 structures are mostly, and the number of stator poles is greater than the number of rotor poles. Switched reluctance motors have simple structure, easy manufacture, easy speed regulation, reliable operation, not easy to damage, and high power factor. , High operating efficiency, large starting torque, small starting current, strong overload capacity, heavy-load starting and other advantages, and at the same time, it has good performance in a wide range of high-speed constant power range....

AI Technical Summary

Problems solved by technology

[0005] In addition, the switched reluctance motor can only be unilaterally excited during the control of each phase, that is, it can only supply power in one direction and flow in one direction in one switching cycle. For the current, one area in the positive half cycle is used, and the negative half cycle is not used; and although there are two areas within a pole pitch range that can generate torque, only one can be used; and in the process of stator commutation, the number of rotor poles cannot be fully utilized , such as three-phase 6 / 4, each phase can only use 2 poles for the stator, and the rotor can only use 2 poles, and each phase of four-phase 8 / 6 can only use 2 poles for the stator and rotor. Only 4 poles can be used for each rotor, so the magnetic common energy area is small and the material is wasted

At the same time, because the rotor is not a permanent magnet pole, the efficiency of the switched reluctance motor in reversible power generation is very low, only 1 / 3 to 2 / 5

[0006]At present, all countries in the world are researching the new type of motor, the switched reluctance motor, and they all adopt single-chip microcomputer control technology in the control technology, which has made a great breakthrough in its control. And there have been new control-specific module chips, such as DSP chips, but there has been no progress in the switched reluctance motor itself.

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