A mathematical modulation model and magnetic field analysis method for dual permanent magnet vernier motor

By establishing a modulation operator model for dual permanent magnet vernier motors, the analysis difficulties of complex modulation relationships and harmonic content in existing technologies are solved, and fast and flexible motor analysis and design guidance are achieved.

CN114741933BActive Publication Date: 2025-10-03JIANGSU UNIV
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Patent Information

Application Number
CN202210503863.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-05-10
Publication Date
2025-10-03
Estimated Expiration
2042-05-10

AI Technical Summary

Technical Problem

Existing technologies make it difficult to efficiently analyze the complex modulation relationships and harmonic content of dual permanent magnet vernier motors, and the calculations are time-consuming, making it difficult to reveal the motor's operating mechanism.

Method used

Mathematical formulas are used to establish the modulation operator models of the stator, rotor and winding of the dual permanent magnet vernier motor. The mathematical model is used to characterize the mechanical structure and electromagnetic field of the motor, simplifying the analysis process and enabling flexible adjustment of model parameters.

Benefits of technology

It enables fast and flexible motor analysis, simplifies the modeling process, provides theoretical guidance for motor design, and does not rely on simulation software. It can reveal the electromagnetic field action mechanism of the motor in principle.

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Abstract

The present invention discloses a mathematical modulation model and magnetic field analysis method for a dual permanent magnet vernier motor. First, a mathematical model of the stator and rotor modulation operators is established based on the dual permanent magnet vernier motor object to be analyzed; then, based on the position and size parameters of the permanent magnets and armature windings, equivalent square wave mathematical models of the initial stator permanent magnet magnetomotive force, the initial rotor permanent magnet magnetomotive force, and the initial armature magnetomotive force are respectively established; secondly, based on the modulation relationship of each part, each initial magnetomotive force is multiplied by one or more modulation operators that participate in the corresponding action to solve the actual magnetomotive force component of each part in the air gap; at this time, the air gap has been equivalently converted to a uniform air gap, and then, based on the actual magnetomotive force of the air gap, the magnetic field component of each part in the air gap is obtained to realize the magnetic field analysis of the motor; finally, the magnetic field analyzed by the mathematical modulation model is compared with the finite element software to verify the feasibility of the present invention. The present invention does not rely on simulation software, and the calculation and analysis are convenient, flexible, and fast.
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