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Volume 61 Issue 2 (2011) - Годишник на ТУ - София - Технически ...

Volume 61 Issue 2 (2011) - Годишник на ТУ - София - Технически ...

Volume 61 Issue 2 (2011) - Годишник на ТУ - София - Технически ...

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<strong>Годишник</strong> <strong>на</strong> <strong>Технически</strong> Университет - <strong>София</strong>, т. <strong>61</strong>, кн.2, <strong>2011</strong>Proceedings of the Technical University - Sofia, v. <strong>61</strong>, book 2, <strong>2011</strong>ОПТИМИЗАЦИЯ НА ФОРМАТА НА МОГНИТОПРОВОД С ГЕНЕТИ-ЧЕН АЛГОРИТЪМИлиа<strong>на</strong> Маринова, Анелия Терзова, Валентин МатеевРезюме: В тази статия е представен подход за оптимизация <strong>на</strong> формата <strong>на</strong>електромагнит<strong>на</strong> система, използващ генетичен алгоритъм. Използван е двумеренмодел, реализиран с метода <strong>на</strong> крайните елементи. Оптимизацион<strong>на</strong>процедура е организира<strong>на</strong> да създава предварително зададено поле. Моделът ереализиран с компютър<strong>на</strong>та програма Femm. Оптимизацион<strong>на</strong>та процедура ереализира<strong>на</strong> посредством тулбокса за генетични алгоритми <strong>на</strong> програматаMatlab, който използва Femm модела през Octave/Lua интерфейс. Предложениятметод е демонстриран при оптимизация <strong>на</strong> формата <strong>на</strong> полюсите <strong>на</strong>безчетков постоянотоков двигател.Ключови думи: оптимизация, генетични алгоритми, метод <strong>на</strong> крайните елементи,компютърно проектиранеSHAPE DETERMINATION OF MAGNETIC CORE BYGENETIC ALGORITHMIliana Marinova, Aneliya Terzova, Valentin MateevAbstract: In this work a general approach for shape optimization by genetic algorithmmethod is proposed. 2D finite element field magnetic model is implemented andapplied for optimal shape determination for given field distribution. Field modelingemploys the Femm software package. Optimization is made by genetic algorithmtoolbox of Matlab which employs the Femm model true Octave/Lua interface. An exampleof BLDC motor pole is designed for optimal shape determination.Keywords: shape optimization, genetic algorithms, finite element method1. IntroductionPermanent magnet brushless DC (BLDC) motors are increasingly being used in industrialand household products because of their high torque density, high efficiency,and low noise. Several applications of these motors require to be satisfied some specificationssuch as accurate positioning with high speed and etc. The vibration due tomechanical or electrical exciting force can disturb these requirements. Especially, becauseof the increase of the motor speed and the application of the high energy permanentmagnet, the exciting force of high frequency due to electromagnetic origincauses new problems. The machine performance depends on the interaction between© <strong>2011</strong> Publishing House of Technical University of Sofia105All rights reserved ISSN 1311-0829

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