An Equivalent Magnetic Network Analysis Method for Hybrid Rotor Permanent Magnet Synchronous Motor
A technology of permanent magnet synchronous motor and equivalent magnetic network, applied in the field of electromagnetic field calculation, can solve the problems of cumbersome and time-consuming operation process, and achieve the effects of simple calculation formula, improved model accuracy, and reduced model error
Active Publication Date: 2019-08-27
JIANGSU UNIV
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If one hundred points are taken in one electrical cycle, manual simulation is required one hundred times, which is very cumbersome and time-consuming
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[0047] 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.
[0048] 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 hybrid rotor permanent magnet synchronous motor: figure 1 (a) is the topological structure diagram of the motor, in which 1 is the non-magnetic material, 2 is the rotor, 3 is the surface embedded permanent magnet, 4 is the embedded permanent magnet, 5 is the armature winding, 6 is the stator, 7 It is a rotating shaft; the embodiment of the present invention is a three-phase motor with 48 slots / 8 poles, which is divided into four parts: stator, rotor, air gap and rotating shaft; the stator includes a yoke, stator teeth, armature slots and armature windings, and the armature windings Distributed winding m...
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The invention discloses an equivalent magnetic network analysis method of a hybrid rotor permanent-magnet synchronous motor. The equivalent magnetic network analysis method comprises the steps of building models of a stator, a rotor and an air gap of the motor, in which the magnetic field distribution characteristic and a motor topological structure are comprehensively considered, a magnetic pathis accordingly planned, a magnetic guide region is divided, and the non-linear characteristic, magnetic leakage and an edge effect of an iron core are fully considered; solving the models, in which animproved Newton iteration method is employed and magnetic density substitutes magnetic conductivity and is used as an iterative variable to obtain higher calculation efficiency; introducing a freezing magnetic conductivity method into a magnetic network model, and a permanent-magnet torque component and a magnetic reluctance torque component are rapidly solved so as to facilitate the optimizationand the design of the motor; and comparing a magnetic network simulation result with a finite element and an experiment result, and verifying the accuracy of the models. Magnetic network modeling isimplemented with regard to the hybrid rotor permanent-magnet synchronous motor, and the scheme provided by the invention can provide a reference for post-period research on magnetic network modeling of the motor.
Description
technical field [0001] The invention relates to an equivalent magnetic network analysis method of a hybrid rotor permanent magnet synchronous motor, which belongs to the field of electromagnetic field calculation. Background technique [0002] The hybrid rotor permanent magnet synchronous motor combines the characteristics of the built-in and surface-embedded permanent magnet motors, has high torque density and wide speed range, and is suitable for the field of electric vehicles. By optimizing the pole arc coefficient and position of the surface-embedded permanent magnet, the average torque can be effectively increased and the torque ripple can be reduced. The output torque of hybrid rotor permanent magnet synchronous motor includes permanent magnet torque component and reluctance torque component. In order to deeply analyze the characteristics of permanent magnet torque and reluctance torque and maximize the utilization of both, it is necessary to combine the separated. T...
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IPC IPC(8): H02K21/14H02K21/02H02K1/27H02K1/16H02K3/28
Inventor 刘国海蒋山陈前徐高红
Owner JIANGSU UNIV