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Definiranje kritičnih podataka pola rotora LSPMSM-a s obzirom na faktor snage i učinkovitosti uporabomTaguchijeve metode USING TAGUCHI METHOD IN DEFINING CRITICAL ROTOR POLE DATA OF LSPMSM CONSIDERING THE POWER FACTOR AND EFFICIENCY Uğur Demir, Mustafa Caner AkünerOriginal scientific paper This paper presents determining of critical rotor pole data of line-start permanent magnet synchronous motor (LSPMSM). The critical rotor pole data of LSPMSM considering the power factor and efficiency are investigated by using Taguchi's method. This determining process is carried out to prevent waste of time while 3D analysis is made. Two-dimensional (2D) dynamic finite element analysis (FEA) models are deployed to evaluate the performances of LSPMSM. To avoid the task of creating the geometry of the motor in Maxwell 3D, RMxprt has initially been used here to provide a convenient way of expediting. This study has performed 2 different ways for optimization. They were optimization using Taguchi's method and without using Taguchi's method. The method without using Taguchi method is known as a conventional method. The experimental comparisons between these ways have demonstrated that remarkable decrease in time-loss in the power factor and efficiency can be obtained by the proposed method. Keywords: design of experiment; finite element analysis; line-start permanent magnet motor; optimization; power factor and efficiency; Taguchi Definiranje kritičnih podataka pola rotora LSPMSM-a s obzirom na faktor snage i učinkovitosti uporabomTaguchijeve metodeIzvorni zanstveni članak U radu se prikazuje određivanje kritičnih podataka pola rotora sinhronog motora s permanentnim magnetom (LSPMSM). Kritični podaci pola rotora LSPMSM-a s obzirom na faktor snage i učinkovitosti istražuju se pomoću Taguchi metode. Ovaj se proces određivanja provodi kako bi se spriječilo gubljenje vremena dok se radi 3D analiza. Za procjenu rada LSPMSM razvijeni su dvodimenzijski (2D) dinamički modeli analize konačnih elemenata (FEA). Da bi se izbjegao zadatak stvaranja geometrije motora u Maxwell 3D, koristio se RMxprt kako bi se osigurao prikladan način otpremanja. U radu su provedena 2 različita načina za optimizaciju. To su optimizacija primjenom Taguchi metode i bez nje. Ona bez uporabe Taguchi metode je poznata kao konvencionalna metoda. Eksperimentalne usporedbe ovih načina su pokazale da se predloženim postupkom može postići značajno smanjenje gubitka vremena kod faktora snage i učinkovitosti.Ključne riječi: faktor snage i učinkovitosti; metoda konačnih elemenata; optimizacija; plan eksperimenta; sinhroni motor s permanentnim magnetom; Taguchi

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In this study, the axial flux permanent magnet motor and the length range of the air gap between rotors was analyzed and the appropriate length obtained. NdFeB permanent magnets were used in this study. Permanent magnets can change the characteristics of the motor's torque. However, the distance between permanent magnets and the air gap will remain constant for each magnet. The impact of different magnet angles for the axial flux permanent magnet motor and other motor parameters was examined. To this aim, the different angles and torque values of the magnetic flux density were calculated using the finite element method of analysis with the help of Maxwell 3D software. Maximum torque was obtained with magnet angles of 21°, 26°, 31.4°, and 34.4°. Additionally, an important parameter for the axial flux permanent magnet motor in terms of the air gap flux was analyzed. Minimum flux change was obtained with a magnet angle of 26°. The magnetic flux of the magnet-to-air-gap is under 0.5 tesla. Given the height of the coil, the magnet-to-air-gap distance most suitable for the axial flux permanent magnet motor was 4 mm. Ill. 11, bibl. 4, tabl. 2 (in English; abstracts in English and Lithuanian).http://dx.doi.org/10.5755/j01.eee.110.4.280