A mixed excitation switch magnetic linkage motor
A technology of switching flux linkage and hybrid excitation, which is applied to the static parts of the magnetic circuit, the shape/style/structure of the magnetic circuit, and the manufacture of the stator/rotor body. , to achieve the effect of improving anti-electromagnetic interference and electromagnetic compatibility, improving power density and improving utilization rate
Inactive Publication Date: 2011-03-09
ZHEJIANG UNIV
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Problems solved by technology
[0003] However, the air gap magnetic field of the traditional permanent magnet switch flux linkage motor is mainly generated by the excitation of the permanent magnet, which is difficult to adjust, which limits the operating speed range of the motor
In addition, there is still serious flux leakage in the traditional permanent magnet switch flux linkage motor. On the one hand, the flux leakage causes the permanent magnet utilization rate to be low, and on the other hand, it also leads to electromagnetic interference and electromagnetic compatibility problems. non-magnetic material
Method used
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[0017] refer to figure 1 , the hybrid excitation switching flux linkage motor includes a rotor 1, a stator 2, a three-phase armature winding 3, a single-phase excitation winding 4 and a casing 5, the casing is made of magnetically conductive material, and the rotor is composed of slotted iron core laminations, fixed on The stator in the casing includes "U"-shaped iron core 2.1 and first permanent magnet 2.2 arranged in sequence. The first permanent magnet is magnetized tangentially along the circumference, and N poles and S poles are arranged alternately. The second permanent magnet 2.3 is placed between the casings, the second permanent magnet is magnetized along the radial direction, N poles and S poles are arranged alternately, the first permanent magnet and the second permanent magnet in contact with the "U" shaped iron core are on the contact surface The polarity is the same, the armature tooth is composed of the first permanent magnet 2.2 and the "U" shaped iron core edg...
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The invention discloses a mixed excitation switch magnetic linkage motor, including rotors, stators, three-phase armature windings and a case, wherein, the case is in magnetic conduction material, thestator fixed in the case includes 'U'-shaped core and a first permanent magnet connected in sequence, the first permanent magnet charges magnetism tangentially along the circumference, N pole and S pole are arranged alternately, a second permanent magnet is provided between the 'U'-shaped core base and the case, the second permanent magnet charges magnetism along the radius direction, N pole andS pole are arranged alternately, the first permanent magnet and the second permanent magnet contacted to the 'U'-shaped core has identical polarity at the contact face, the armature teeth are composedof the first permanent magnet and the 'U'-shaped core edge adhered to the first permanent magnet, the three phase armature winding is in concentrated winding on the armature teeth, and the single-phase excitation is in concentrated winding on the second permanent magnet. The inventive mixed excitation switch magnetic linkage motor has tunable air-gap field, and can avoid the leakage of case outeredge, improves the motor anti-electromagnetic interference and electromagnetic compatibility, and improves utilization of permanent magnets.
Description
technical field [0001] The invention relates to an excitation switch flux linkage motor. Background technique [0002] Motors are the main drive components in modern industrial systems, and motors with excellent performance are crucial to the entire drive system. In recent years, with the development of power electronics technology, permanent magnet materials and microcomputer control technology, the permanent magnet brushless DC motor has developed rapidly. The permanent magnet brushless DC motor has the characteristics of high efficiency and high power density. With the high performance permanent magnet The advent of materials has greatly improved the power density and performance of permanent magnet brushless DC motors. Switched reluctance motors are used more and more widely because of their simple structure and good reliability. The permanent magnet switched flux linkage motor obtained by placing permanent magnets in the middle of the stator teeth of the switched relu...
Claims
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IPC IPC(8): H02K1/06H02K1/17H02K3/04H02K15/02
Inventor 沈建新王灿飞
Owner ZHEJIANG UNIV