Mixed rotor type bearing-free motor
A bearingless motor, rotor-type technology, applied in electrical components, electromechanical devices, magnetic circuit rotating parts, etc., can solve the problem that bearingless motors cannot achieve complete decoupling control.
Inactive Publication Date: 2006-10-04
SHENYANG POLYTECHNIC UNIV
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Problems solved by technology
[0004] Aiming at the problem that the surface permanent magnet rotor and the induction rotor cannot achieve both the torque and the magnetic levitation force index at the same time, and the existing bearingless motor cannot realize complete decoupling control, the present invention provides a method that cancels the conventional bearing and can not only obtain the torque and magnetic levitation force at the same time. Torque and magnetic levitation force indicators, and can realize the hybrid rotor bearingless motor with decoupling control of speed and magnetic levitation force
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[0011] As shown in the drawings, the present invention consists of a housing 5, a stator 4, a winding 3, a load 6 and a rotor. The casing 5 is made of plexiglass into a cylindrical shape, with a fluid inlet 8 at one end and a fluid outlet 7 on the side of the other end. There are two identical stators 4 installed in the casing 5, and the stators 4 are installed by an electrician. It is made of laminated silicon steel sheets, and a certain number of slots are cut out and put into the stator winding 3. Each slot is divided into two layers and put into two sets of stator windings 3 with 4 poles and 2 poles respectively. The two stators contain two identical The two rotors are connected by the rotor shaft. Each rotor is composed of iron core 1 and permanent magnet 2. The load is connected to the rotor shaft by mechanical means. The power line of the winding 3 is drawn out through the hole on the housing 5. . In this embodiment, the outer diameter of the rotor is 16 mm, the shaft ...
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The mixed rotor type bearing-free electric machine is formed from shell body, stator, winding, rotor and load. The stator of said electric machine adopts two set of stator windings whose difference of number of poles is 2, its rotor adopts the composite structure formed from permanent magnet and iron core, in the interior of shell body two identical stators are mounted, their interiors contain two identical rotor, they are connected by means of mechanical shaft, the load and rotor shaft also are mechanically connected, and the power supply wire of winding is led out from wall of shell body. Said invention can simultaneously obtain torque and magnetic suspension force indexes, and can implement real time control of machine rotating speed and magnetic suspension force decouple.
Description
Technical field [0001] The invention belongs to a motor, in particular to a hybrid rotor type bearingless motor. Background technique [0002] If the magnetic suspension bearing is combined with the stator and rotor of the motor, the magnetic field in the motor can not only generate torque, but also generate controllable radial force. This kind of motor that relies on magnetic levitation technology to support the rotor does not require special bearings and is bearingless. Commonly used rotor structures in traditional AC motors, such as induction, reluctance, and permanent magnet rotors, can all be used as rotors for bearingless motors. However, the rotor structure is related to the torque and magnetic levitation force of bearingless motors. The comparison results show that under the same volume, the surface permanent magnet rotor and the induction rotor can obtain the maximum torque and magnetic levitation force respectively. However, the maximum torque and magnetic levita...
Claims
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IPC IPC(8): H02K16/00H02K1/16H02K1/27
Inventor 王凤翔王宝国
Owner SHENYANG POLYTECHNIC UNIV