2D magnetic circuit subdivision modeling method for stator and rotor double permanent magnet cursor motor
A vernier motor and modeling method technology, applied in the field of electromagnetic field calculation, can solve problems such as low efficiency, inapplicability to the initial design stage of motors, and long analysis time, so as to reduce errors, improve programming simplicity, and improve accuracy.
Active Publication Date: 2018-09-28
JIANGSU UNIV
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However, FEA software is based on the principle of full mesh division inside the motor, and the analysis is time-consuming and inefficient, so it is not suitable for the initial design stage of the motor
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[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.
[0036] In order to illustrate the beneficial effects of the present invention more simply and clearly, a detailed description will be given below in conjunction with a specific stator-rotor double permanent magnet vernier motor: figure 11 is the stator yoke, 2-1 is the stator tooth; 2-2 is the pole piece of the stator tooth, 2-3 is the air gap between the pole pieces of the stator tooth, 3 is Winding, 4-1 is the rotor yoke, 4-2 is the rotor permanent magnet, 4-3 is the rotor tooth, 5-1 is the first permanent magnet of the stator Halbach permanent magnet array, 5-2 is the first permanent magnet of the stator Halbach permanent magnet array Two permanent magnets, 5-3 are the third permanent magnet of the stator Halbach permanent magnet array, and 6 is the air gap between the stat...
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The invention relates to a 2D magnetic circuit subdivision modeling method for a stator and rotor double permanent magnet cursor motor, which comprises the following steps: dividing a complex magneticfield region and a regular magnetic field region of the motor, and performing diamond small mesh subdivision and magnetic circuit permeance equivalence on the two regions respectively; improving theconnection relationship of permeance nodes at the boundary of the two types of regions to construct a complete 2D magnetic circuit division model, and establishing permeance solution matrix equationsin turn; constructing a relational formula between a permeability convergence factor and the maximum difference of the magnetic density of the motor tooth part; solving the permeance matrix equation,using an iterative algorithm to realize fast solution of the matrix to obtain the magnetic flux and magnetic potential of each permeance node, and further calculating the magnetic flux density and permeability of each permeance; and calculating the electromagnetic parameters such as the flux linkage of each phase, counter electromotive force of the winding of the motor and the like according to the electromagnetic calculation constraint of the motor, and finally comparing with the result of a finite element. For the first time, the 2D magnetic circuit subdivision modeling method for stator androtor double permanent magnet cursor motor in the present invention performs 2D magnetic circuit subdivision for a stator and rotor double permanent magnet cursor motor, and the provided scheme can provide reference research for this type of double permanent magnet motor.
Description
technical field [0001] The invention relates to a 2D magnetic circuit subdivision modeling method of a stator-rotor double permanent magnet vernier motor, belonging to the field of electromagnetic field calculation. Background technique [0002] The stator and rotor double permanent magnet vernier motor utilizes the modulation effect of the modulating teeth on the spatial magnetic field, and has the characteristics of being able to output high torque at low speed, and is suitable for the field of agricultural machinery and equipment. Compared with the traditional permanent magnet vernier motor, the stator and rotor double permanent magnet vernier motor has improved the torque density. At the same time, the use of mixed magnetic materials not only reduces the cost of the motor, but also reduces the influence of thermal demagnetization of the motor rotor. The traditional permanent magnet vernier motor is divided into stator type and rotor type according to the position of the ...
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IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 曹东辉刘童赵文祥
Owner JIANGSU UNIV