Optimum Pole Arc Offset in Permanent Magnet Synchronous Generators for Obtaining Least Voltage Harmonics

Dalcalı, Adem; Akbaba, Mehmet

doi:10.24200/sci.2017.4357

Cited by 10 publications

(12 citation statements)

References 12 publications

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“…The purpose of this research is to design and to manufacture a suitable brushless motor and drive for application of evaporative cooler, taking into account all functional requirements. 6 A. Brushless motor Permanent brushless (PMBL) motors are mainly divided into two main groups: brushless AC (PMSM) and brushless DC (BLDC) motors [15]. As shown in Fig.…”

Section: Brushless Motor and Drive Systemmentioning

confidence: 99%

Technical and Economic Considerations for using of Permanent Magnet Brushless Motors in Evaporative Water Coolers

Niasar

NikKhah

EshratAbadi³

2018

Scientia Iranica

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Evaporative coolers due to their low cost are used in hot and dry regions of many countries especially in Iran. Conventional evaporative coolers use single-phase induction motors (SPIMs). But the benefits of these motors are very low, and their substitution with high efficient electrical motors is considered by industrial parties. In this paper, the details of using the brushless motor in the application of evaporative cooler are presented. A 1/2 hp brushless motor and drive are designed and built. This motor-drive is tested by a dynamometer and standard testing equipment. Also, for the approval of this motor-drive, a 5000 m 3 /h direct evaporative water cooler equipped with this motor is examined under the airflow rate test in the reference laboratory. The results obtained in both tests are compared with the test results of a typical SPIM. The results verify an increase of at least 60% for energy efficiency compared to evaporative coolers equipped with SPIM.Moreover, a new control scheme based on power control instead of speed control is proposed to stabilize the outlet airflow rate. The results indicate that use of brushless motors in this application can offer considerable energy saving, and helps to protect environment. 2

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Section: Brushless Motor and Drive Systemmentioning

confidence: 99%

Technical and Economic Considerations for using of Permanent Magnet Brushless Motors in Evaporative Water Coolers

Niasar

NikKhah

EshratAbadi³

2018

Scientia Iranica

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“…Nowadays, the importance of renewable energy sources increases due to the increasing awareness on the environmental issues and the conflicts in the Middle East area producing high percentage of fossil fuels. In addition to being an environmentally friendly and local solution, intense efforts are underway to utilize the renewables to diversify energy sources [1,2]. When considering renewable energy sources, Turkey is a rich country specifically in terms wind, solar and hydro energy.…”

Section: Introductionmentioning

confidence: 99%

Cogging Torque Minimization Using Skewed and Separated Magnet Geometries

et al. 2020

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Çalışmada, 2,5 kW gücünde 14 kutuplu, 84 oluklu sabit mıknatıslı senkron generatörün (SMSG) analitik tasarımı, analizi ve optimizasyonu gerçekleştirilmiştir. Bu tasarıma ait verim, tork, vuruntu torku ve manyetik akı yoğunluğu gibi performans özelikleri değerlendirilmiştir. Ardından mıknatıs geometrisinin vuruntu torkuna etkisini incelemek amacıyla ilgili generatörün 3 boyutlu modeli çıkartılmıştır. Bu bağlamda bölünmüş ve kaykı/çarpıklık (skew) verilmiş mıknatıs yapılarının etkileri araştırılmıştır. İlk tasarımda mıknatıs tek parça modellenmiş ve vuruntu torkunun etkin değeri 436,75 mNm olarak bulunmuştur. İkinci tasarımda mıknatıs yüzeyi boyunca belli ölçüde çarpık bir yarık açılmış ve bu işlem vuruntu torkunu 434,58 mNm değerine düşürmüştür. Diğer tasarımda, birinci tasarımdaki mıknatıs iki parçaya bölünmüş ve bölünen mıknatıslar çarpık şekilde tekrar birleştirilmişlerdir. Böylece vuruntu torkunun değeri 159,60 mNm olarak bulunmuştur. Son olarak, son modeldeki mıknatıs geometrisine belli ölçülerde iki tane yarık açılarak vuruntu torku 89,95 mNm'e kadar düşürülmüştür. Elde edilen sonuçlardan, son tasarımın, ilk tasarıma kıyasla vuruntu torku değerinde %80'e varan bir iyileşme sağladığı sonucuna varılmıştır.

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“…The air gap magnetic field, no‐load back‐EMF, electromagnetic torque, and efficiency of the coreless axial flux permanent magnet generator are calculated, and the response surface method is used to optimize the THD of the induced EMF . By changing the pole‐arc offset distance, the corresponding air‐gap flux density and phase voltage are obtained, the THD and efficiency of the generator are analyzed to obtain the best pole‐arc offset distance . Multi‐objective optimization method is used to optimize the efficiency, size, cost, and weight of the generator, and a method of reducing cogging torque by segmented magnets is proposed, which ensures that the generator loadability is not affected too much .…”

Section: Introductionmentioning

confidence: 99%

Voltage regulation Rate and THD optimization analysis of coreless axial flux PM synchronous generator for wind power generation

Zhu

Cao

et al. 2019

IEEJ Transactions Elec Engng

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The basic design and characteristic analysis of the coreless axial flux permanent magnet synchronous generator (AFPMSG) for small wind power generation are carried out. The prototype is manufactured and tested to verify the designed generator. In addition, to reduce the voltage regulation rate and harmonic content of the generator, the optimal design is carried out on the basis of the original generator. The voltage regulation rate and THD of a coreless AFPMSG using the Halbach permanent magnet array are studied. The effects of different generator parameters such as pole arc coefficient, air gap length, permanent magnet thickness, and number of turns in series per phase on the voltage regulation rate and THD are analyzed when the generator is loaded with pure resistance. Because the various parameters of the generator are affected each other, the Taguchi algorithm was adopted for multi-objective optimization. The influence proportion of different generator parameters on the voltage regulation rate and THD was analyzed. According to the results, the parameters are reasonably selected to design the generator and improve the performance of the generator.

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Optimum Pole Arc Offset in Permanent Magnet Synchronous Generators for Obtaining Least Voltage Harmonics

Cited by 10 publications

References 12 publications

Technical and Economic Considerations for using of Permanent Magnet Brushless Motors in Evaporative Water Coolers

Technical and Economic Considerations for using of Permanent Magnet Brushless Motors in Evaporative Water Coolers

Cogging Torque Minimization Using Skewed and Separated Magnet Geometries

Voltage regulation Rate and THD optimization analysis of coreless axial flux PM synchronous generator for wind power generation

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