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Optimal Design Method of Closed Winding Permanent Magnet Brushless DC Motor

A permanent magnet brushless DC, closed-winding technology, used in computing, electrical digital data processing, special data processing applications, etc.

Active Publication Date: 2016-08-17
南京华乘电气科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Closed winding permanent magnet brushless DC motor is a new structure motor in which permanent magnets are installed on the rotor, and the stator winding is closed and connected like traditional DC motors. Its design and control have particularity. Currently, closed winding permanent magnet brushless DC The design optimization of the motor is still blank

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  • Optimal Design Method of Closed Winding Permanent Magnet Brushless DC Motor

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Embodiment Construction

[0040] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0041] In actual motor design and production, under the premise of satisfying the basic performance such as torque output, efficiency, and power factor, it is hoped that the volume and cost of the motor should be as low as possible. The two goals are often contradictory, but the present invention can simultaneously optimize multiple goals. In addition, the magnetic circuit method is mostly used in the traditional motor design, and the finite element method is only used to verify the final design, ...

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Abstract

The invention relates to a method of optimallying designing a closed-winding permanent magnet brushless DC motor on the basis of differential evolution algorithm and finite element time-stepping method. The method includes: according to the particularity in the closed-winding permanent magnet brushless DC motor, by considering a body and a control part of the motor, using the cost in torque density and unit torque of a system as an optimization target; using constraint conditions such as parallel branch circulation, power factor, efficiency, torque output, fluctuation, heating, structural strength and the like. The method has the advantages that design schemes of each generation are varied, intersected and selected for differential evolution, and a Pareto optimal solution set is updated continuously; in order to ensure design accuracy, the finite element time-stepping method is applied to accurate dynamic simulation computation of the closed-winding permanent magnet brushless DC motor; the reliable and accurate method is provided for the design optimization of the closed-winding permanent magnet brushless DC motor, and the development of the novel motor is quickened.

Description

technical field [0001] The invention relates to the field of motor design optimization, in particular to a closed-winding permanent-magnet brushless DC motor, and relates to an accurate motor multi-objective intelligent optimization design method under constraint conditions. Background technique [0002] When optimizing the design of the motor, it is necessary to comprehensively consider the performance, volume, cost and other goals of the motor, and these optimization goals are often in conflict with each other; in addition, in the optimization process, the actual production difficulty and application conditions must be considered. Due to the high nonlinearity of the motor and the strong coupling between parameters, the calculation method of the motor will directly affect the accuracy of the calculation results, thus affecting the final optimization results. Therefore, the optimization method and calculation method are the key points in the optimal design of the motor. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06N3/12
Inventor 朱莉李小海姜淑忠郭灿新
Owner 南京华乘电气科技有限公司
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