A permanent magnet bias bearingless switched reluctance starter/generator

Abstract

The invention discloses a permanent-magnet bias no-bearing switch reluctance starter / generator, and the starter / generator consists of a stator back yoke, permanent magnets, stator suspension force iron cores, stator torque iron cores, a rotor core, suspension force winding coils, torque winding coils, auxiliary excitation winding coils, and a shaft. The inner side of the stator back yoke is provided with the stator suspension force iron cores and the stator torque iron cores, and the permanent magnets are embedded into the stator back yoke between the stator suspension force iron cores and the stator torque iron cores. The stator suspension force iron cores and the stator torque iron cores are respectively provided with the suspension force winding coils and the torque winding coils in a winding manner. The auxiliary excitation winding coils are wound in auxiliary winding installation grooves at yoke parts of the stator torque iron cores. The rotor core is disposed in the stator suspension force iron cores and the stator torque iron cores, and the interior of the rotor core is provided with the shaft. The permanent magnets are used for providing a bias magnetic field, thereby reducing the motor loss and shortening the axial length. Meanwhile, the permanent magnets and the auxiliary excitation winding coils are used for providing exciting flux, thereby increasing the electromagnetic torque of the motor, and improving the efficiency of the motor.

Description

Technical field [0001] The invention relates to a permanent magnet auxiliary excitation 12 / 14 bearingless switched reluctance motor, in particular to a permanent magnet bias bearingless switched reluctance starter / generator, which can be used as a high-speed and high-precision drive motor. Background technique [0002] Switched reluctance motor is a new type of speed-regulating motor with simple structure that has been gradually developed in the past two decades by relying on the continuous progress of modern microelectronics technology, modern power electronic technology and control technology. Its operating principle is different from induction motors and DC Motors instead rely on the "principle of least reluctance" to generate torque. The stator and rotor of the switched reluctance motor are both double salient pole structures, which can be laminated by silicon steel sheets. The stator teeth are wound with concentrated windings, and the rotor has neither permanent magnets nor ...

AI Technical Summary

Problems solved by technology

Although the electromagnetic torque of the motor can be increased to a certain extent by adjusting the position of the stator torque core teeth, the degree of increase is limited due to the limitation of the slot full rate

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