Novel amorphous alloy switched reluctance motor stator vibration reduction structure and using method thereof
A switched reluctance motor, amorphous alloy technology, applied in the direction of magnetic circuit shape/style/structure, structural connection, magnetic circuit, etc., can solve problems such as poor operability, narrow application range, and inability to adjust the motor, and achieve large tangential Effect of Magnetic Density, Small Radial Magnetic Density
Inactive Publication Date: 2021-04-27
CHINA THREE GORGES UNIV
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Problems solved by technology
[0006] The above methods have a narrow scope of application, and cannot be adjusted according to the actual operating state of the motor, and their operability in engineering practice is poor; the method of controlling the torque ripple by using the control strategy is to control the waveform of the power excitation to adjust the torque ripple. Its essence is to adjust the electrical signal, and it does not solve the electromagnetic vibration problem of the motor from the root of the vibration
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[0030] Such as Figure 8 As shown, when the switched reluctance motor is running, there is an electromagnetic force between the stator and rotor poles, and the electromagnetic force can be decomposed along the radial direction and the tangential direction. It has nothing to do with the size of the stator. The stator deformation caused by it is the main source of stator vibration and noise. The radial electromagnetic force is generated at the overlapping part of the stator teeth and the rotor teeth. The radial force generated by the overlapping part is the effective radial electromagnetic force. The radial electromagnetic force is generated at the edge of the two overlapping areas. When the stator and the rotor are completely coincident, the radial electromagnetic force reaches its peak value;
[0031] According to the Maxwell tensor method, the radial electromagnetic force per unit area is expressed as the radial electromagnetic force density:
[0032]
[0033] B r =μ r ...
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The invention discloses a novel amorphous alloy switched reluctance motor stator vibration reduction structure based on a piezomagnetic effect and a using method thereof. The structure comprise a stator core and a stator shell, wherein stator tooth structures with different numbers are arranged on the stator core, bolt holes are formed in the surface of the stator core and the surface of the stator shell, and the bolt holes are distributed in the outer side of the stator core in the radial direction of stator teeth; bolt clamping grooves are formed in the inner sides of the stator teeth, the bolt clamping grooves are communicated with the bolt holes, the size and the shape of the bolt holes in the stator shell are consistent with those of the bolt holes in the stator iron core, and the stator shell and the stator iron core are connected through a stress loading device. According to the structure, the external pressure stress of the bolt radial to the iron core is utilized and the stress is detected in real time through the sensor. By adopting the structure, magnetic conductivity of the amorphous alloy iron core in the radial direction is reduced, magnetic flux density and radial electromagnetic force density in the radial direction are also reduced, and then the radial electromagnetic force is reduced so as to reduce the electromagnetic noise.
Description
technical field [0001] The invention relates to the technical field of motors, in particular to a new structure for damping vibration of an amorphous alloy switched reluctance motor stator and a method for using the same. Background technique [0002] In recent years, in order to solve a series of energy and environmental problems caused by the increasing number of automobiles, finding alternative energy sources and developing new energy vehicles have become a research hotspot in the global automobile industry. The drive motor is the key component for converting the electric energy generated by the power battery in the electric vehicle into mechanical energy, which has a great influence on the performance of the electric vehicle. Switched reluctance motor has become one of the alternative motors for new energy electric vehicles due to its simple structure, strong reliability, good starting performance, large starting torque, small starting current, and wide range of constant...
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IPC IPC(8): H02K1/14H02K5/04H02K11/20
CPCH02K1/146H02K5/04H02K11/20
Inventor 贲彤王进陈龙
Owner CHINA THREE GORGES UNIV