Design and Parametric Analysis of Axial Flux PM Motors With Minimized Cogging Torque

Choi, Jong Hyun; Kim, Jung Hoon; Kim, Dong Ho; Baek, Yoon Su

doi:10.1109/tmag.2009.2018696

Cited by 45 publications

(7 citation statements)

References 3 publications

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“…In Tagu-chi experimental design method, there are 3 function which are mentioned as signal to noise ratio (S/N) function. These function are given in (7)(8)(9). The S/N ratios given in (7)(8)(9) give the biggest best case, the smallest best case and the nominal value best case respectively.…”

Section: Taguchi Experimental Design Methods According To Signal Nois...mentioning

confidence: 99%

“…Table 4 shows the values of the design variables. Design variables are calculated using (6)(7)(8)(9)(10)(11). Thus, the effect of each variable level is determined for factor graphs.…”

Section: Average Effectmentioning

confidence: 99%

“…However, the disadvantage is the cogging torque -the torque fluctuation due to the interaction between the magnet and slot edges [4][5]. There are different techniques in the literature to reduce cogging torque, such as different magnet shapes, magnet skew techniques, magnet placement angle in the self axis (for rectangular magnets) and magnet grouping techniques [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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Bulletin of the Polish Academy of Sciences: Technical Sciences

Hüner¹

2020

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In this study, the optimization of air gap magnetic flux density of open slotted axial flux permanent magnet (AFPM) machine which was developed for wind turbine has been obtained using the Taguchi experimental method. For this, magnetic analyzes were performed by ANSYS Maxwell program according to Taguchi table. Then the optimum values have been determined and the average magnetic flux density values have been calculated for air gap and iron core under load and no-load conditions with ANSYS Maxwell. Traditionally, 15625 analyzes are required for 6 independent variables and 5 levels when experimental method is used. In this study, optimum values are determined by 25 magnetic analyzes, which use L25 orthogonal array. For this purpose, both factor effect graph and signal to noise ratios are used, according to the factors and levels which are obtained from the factor effect graph and the signal to noise ratio. Parameters are re-analyzed by Maxwell. The optimum factors and levels are determined. For optimized values, the air gap magnetic flux density is improved by 65.7% and 173.26%, respectively, according to the average value and the initial design. Therefore, the variables are optimized in a shorter time with Taguchi experimental design method instead of the traditional design method for open slotted AFPM generator. In addition, the results were analyzed statistically using ANOVA and Regression model. The variables were found to be significant by ANOVA. The degree of influence of the variables on the air gap magnetic flux density was also determined by the Regression model.

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Section: Taguchi Experimental Design Methods According To Signal Nois...mentioning

confidence: 99%

“…Table 4 shows the values of the design variables. Design variables are calculated using (6)(7)(8)(9)(10)(11). Thus, the effect of each variable level is determined for factor graphs.…”

Section: Average Effectmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Bulletin of the Polish Academy of Sciences: Technical Sciences

Hüner¹

2020

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“…In [8], soft magnetic wedges have been proposed as a low-cost method for reduction of cogging torque, in which soft magnetic wedges are used. The changes of the rotor side include using a different type of magnet, applying a different skew (conventional, hybrid, trapezoidal, triangular, dual-layer magnet step) to the magnets, magnet grouping, rotor shifting, and changing the magnet angle [9][10][11][12][13]. In this study, the magnets are rotated in their axes to decide the optimum angle for minimum cogging torque and maximum performance.…”

Section: Introductionmentioning

confidence: 99%

Reduction of Cogging Torque and Improvement of Electrical Parameters in Axial Flux Permanent Magnet (Afpm) Synchronous Generator With Experimental Verification

Hüner¹,

Zeka²

2020

PIER C

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This paper presents an axial flux permanent magnet (AFPM) synchronous generator that was manufactured for the reduction of cogging torque by considering the different angles of a rectangleshaped permanent magnet (RSPM). The placement angle of RSPM was changed from 0 to 28 degrees to obtain total harmonic distortion, line voltage, and cogging torque. A numerical finite element model using Maxwell software was created. The model was validated by the experimental results, with and without a load. The optimum placement angle was obtained at 20 degrees, whose total harmonic distortion (Thd) and cogging torque (Tc) were improved by 41.6% and 71.4%, respectively.

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“…They proposed new stator geometry with open-slot structure to reduce the effect of cogging torque [14].…”

Section: Introductionmentioning

confidence: 99%

A new approach in application and design of toroidal axial-flux permanent magnet open-slotted NN type (TAFPMOS-NN) motor

2015

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Original scientific paper This paper presents a novel approach in design of toroidal axial flux permanent magnet open-slotted NN type (TAFPMOS-NN) motor. TAFPMOS-NN motor is an accomplished both theoretical and experimental model. The results of theoretical works and experimental works are performed. TAFPMOS-NN has open-slotted structure and the winding on the core surface which are the most important properties of TAFPMOS-NN motor. This situation has created the hybrid structure electric machine by combining toroidal winding without open-slotted motor properties and toroidal winding with open-slotted motor properties. The mentioned motor types have a problem such as cogging torque. The cogging problem is resolved greatly by the proposed method so that high torque, efficiency and cost saving for TAFPMOS-NN type motor are acquired. Keywords: finite element analysis; optimization; toroidal axial flux permanent magnet open-slotted NN type motor Novi pristup u primjeni i projektiranju NN tipa motora otvorenih utora s permanentnim magnetima prstenastog aksijalnog toka (TAFPMOS-NN)Izvorni znanstveni članak Ovaj rad predstavlja novi pristup u konstrukciji motora NN tipa otvorenih utora s permanentnim magnetima prstenastog aksijalnog toka (TAFPMOS-NN). TAFPMOS-NN motor ostvarenje je i teorijskog i eksperimentalnog modela. Provjereni su rezultati teorijskih i eksperimentalnih radova. TAFPMOS-NN je konstruiran s otvorenim utorima i namotima na površini jezgre što su najvažnija svojstva TAFPMOS-NN motora. Stvoren je električni stroj hibridne strukture s kombinacijom prstenastih namota bez karakteristika motora s otvorenim utorima i prstenastih namota s karakteristikama motora s otvorenim utorima. Navedene vrste motora imaju problem zakretnog momenta zupčanika (cogging torque). Predložena metoda rješava taj problem, pa je postignuta učinkovitost i smanjenje troškova za TAFPMOS-NN tip motora.Ključne riječi: metoda konačnih elemenata; NN tip motora otvorenih utora s permanentnim magnetima prstenastog aksijalnog toka; optimizacija

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Design and Parametric Analysis of Axial Flux PM Motors With Minimized Cogging Torque

Cited by 45 publications

References 3 publications

Bulletin of the Polish Academy of Sciences: Technical Sciences

Bulletin of the Polish Academy of Sciences: Technical Sciences

Reduction of Cogging Torque and Improvement of Electrical Parameters in Axial Flux Permanent Magnet (Afpm) Synchronous Generator With Experimental Verification

A new approach in application and design of toroidal axial-flux permanent magnet open-slotted NN type (TAFPMOS-NN) motor

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