Stator structure of large inductance permanent magnet synchronous motor and large inductance permanent magnet synchronous motor
A permanent magnet synchronous motor and stator structure technology, applied in the shape/pattern/structure of the magnetic circuit, the shape/pattern/structure of the winding conductor, the magnetic circuit, etc. The output capacity declines and other problems, to ensure the control accuracy, improve the overall inductance, and reduce the temperature rise.
Inactive Publication Date: 2019-01-11
GUANGZHOU HAOZHI ELECTROMECHANICAL
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Problems solved by technology
However, it can be seen from the principle of permanent magnet synchronous motor (PMSM) that the permanent magnet synchronous motor only has coil windings on the inner side of the stator core. It will lead to serious distortion of the winding current, so that the current contains a large harmonic component, that is, the formation of harmonic current, and the harmonic current will produce a series of factors that are not conducive to the operation of the permanent magnet synchronous motor, causing the permanent magnet synchronous motor to generate additional heat , Efficiency reduction, output capacity reduction, may also produce torque fluctuations, affecting the control accuracy of permanent magnet synchronous motors, etc.
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[0025] Below, the present invention will be further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of not conflicting, the various embodiments described below or the technical features can be combined arbitrarily to form new embodiments. .
[0026] Such as Figure 1-2 The stator structure of the shown large inductance permanent magnet synchronous motor includes a stator core 10, a first wire 70, a second wire 80 and a third wire 90; the stator core 10 is provided with a first wire slot unit and a second wire slot unit and the third wire slot unit, the first wire slot unit, the second wire slot unit and the third wire slot unit are arranged in sequence around the central axis of the stator core 10; the first wire slot unit includes a first inner wire slot 11 and a first outer wire slot 12, wherein the first inner wire slot 11 and the first outer wire slot 12 are arranged in sequence in a d...
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The invention discloses a stator structure of a large inductance permanent magnet synchronous motor, comprising a stator iron core, a first conductor, a second conductor and a third conductor. The stator core is provided with a first wire slot unit including a first inner wire slot and a first outer wire slot, a second wire slot unit including a first inner wire slot and a first outer wire slot, and a third wire slot unit including a third inner wire slot and a third outer wire slot. A first conductor is wound around the stator core through the first inner slot and the first outer slot to forma first phase coil winding. A second conductor is wound around the stator core through the second inner slot and the second outer slot to form a second phase coil winding. A third conductor is woundaround the stator core through the third inner slot and the third outer slot to form a third phase coil winding. The invention can increase the integral inductance of the large inductance permanent magnet synchronous motor, restrain the generation of harmonic current, ensure the control accuracy and effectively reduce the temperature rise of the permanent magnet synchronous motor rotor. The invention also discloses a large inductance permanent magnet synchronous motor.
Description
technical field [0001] The invention relates to a stator structure, in particular to the stator structure of a large inductance permanent magnet synchronous motor and the large inductance permanent magnet synchronous motor. Background technique [0002] At present, based on the advantages of permanent magnet synchronous motors such as high power factor, high efficiency, high positioning accuracy and fast response speed, it has become a consensus to use permanent magnet synchronous motors as drive motors in the field of electric spindles. However, it can be seen from the principle of permanent magnet synchronous motor (PMSM) that the permanent magnet synchronous motor only has coil windings on the inner side of the stator core. It will lead to serious distortion of the winding current, so that the current contains a large harmonic component, that is, the formation of harmonic current, and the harmonic current will produce a series of factors that are not conducive to the oper...
Claims
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Login to View More IPC IPC(8): H02K1/16H02K3/12H02K3/28
CPCH02K1/165H02K3/12H02K3/28
Inventor 薛建彭一彦汤秀清
Owner GUANGZHOU HAOZHI ELECTROMECHANICAL