Stator hybrid short magnetic circuit magnetic suspension switched reluctance generator

Abstract

The invention discloses a stator hybrid short magnetic circuit magnetic suspension switched reluctance generator which is composed of a stator iron core, a rotor iron core, four suspension poles, eight power generation poles, fourteen rotor poles, four sets of suspension windings, two groups of excitation windings and two phase power generation windings. The four suspension poles are arranged on the stator iron core at equal interval, each two of the eight power generation poles are arranged between the four suspension poles at equal interval, the fourteen rotor poles are arranged on the rotor iron core at equal interval, the four sets of suspension windings are respectively wound on the four suspension poles independently, the two phase excitation windings and the two phase power generation windings are wound on the power generation poles opposite in the radial direction in lap mode, pole arcs of the suspension poles are two times of pole arcs of the power generation poles, and pole arcs of the power generation poles are equal to an arc pole of a rotor. The stator hybrid short magnetic circuit magnetic suspension switched reluctance generator adopts a hybrid stator and a short magnetic circuit structure, solves the problem of coupling of excitation, power generation and suspension, overcomes a magnetic flux reversal phenomenon, reduces magnetic motive force and stator iron core loss, and improves working efficiency and output power density.

Description

technical field [0001] The invention relates to a magnetic levitation switched reluctance generator, in particular to a stator hybrid short magnetic circuit magnetic levitation switched reluctance generator, which belongs to the electromechanical field. Background technique [0002] The switched reluctance motor adopts a double salient pole structure, the stator is wound with a concentrated winding, and the rotor has neither winding nor permanent magnet. Advantages, especially suitable for operation in harsh environments and occasions that require high speed and ultra high speed. Considering the similarity of the stator of the switched reluctance motor and the magnetic bearing stator structure, combining the magnetic bearing technology with the switched reluctance motor to form a magnetic levitation switched reluctance motor not only broadens the theory and application range of the magnetic levitation motor, but also inherits and exerts The high-speed superiority of the swi...

AI Technical Summary

Problems solved by technology

However, in this structure, only half of the stator poles are used for excitation and power generation, so excitation is difficult and power density is very low

Moreover, the motor adopts a long magnetic circuit structure, and there is a reverse magnetic field in the stator core, which not only increases the requirements for the motor's magnetomotive force, but also increases the loss of the stator core of the motor

At the same time, when the excitation winding of the motor is energized together with the suspension winding, the excitation current still has a great influence on the radial suspension force

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