Exploration of a Permanent Magnet Synchronous Generator with Compensated Reactance Windings in Parallel Rod Configuration

Lyan, Oleg; Jankūnas, Valdas; Guseinoviene, E.; Pašilis, Aleksas; Senulis, Audrius; Knolis, Audrius; Kurt, Erol

doi:10.1007/s11664-018-6160-6

Cited by 4 publications

(2 citation statements)

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“…PM machines are frequently preferred especially for lowspeed and variable-speed applications. Improvements in driver technology in parallel with the developments in elements of power electronics have increased the usage of PM machines [19,20].…”

Section: Permanent Magnet Synchronous Generatormentioning

confidence: 99%

A Comparative Study of PM Synchronous Generator for Micro Hydropower Plants

Dalcalı¹

2021

Balkan Journal of Electrical and Computer Engineering

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Developing technology and growing population are increasing the need of countries for energy every passing day. Renewable energy resources, which are an environmentally friendly and local solution alternative to fossil fuels, are seen to be a significant source of supply in this matter. Among renewable energy resources, hydroelectric energy is in an advantageous position with its reliable potential and sustainable production. With the purpose of utilizing small flowing waters such as rivers and streams and solving problems of access to interconnected grids in rural areas, micro-type hydroelectric power plants have a significant potential for countries. This study carried out the design and performance analyses of permanent magnet synchronous generators (PMSGs) with different numbers of poles for micro hydroelectric power plants. The generators' flux density values and total voltage harmonic distortions were examined. Additionally, the cogging torque magnitudes have been analyzed. The generators were loaded with nominal loads, and the time-dependent waveforms of phase voltages were obtained. By subjecting the obtained voltages to Fourier analysis, their harmonic spectrum was created. Finally, by considering the amount of active material used for the designs, their costs were compared.Index Terms-Finite element analysis, Micro hydropower plant, Synchronous generator. I. INTRODUCTIONHE NEED for energy resources is increasing every day due to decreased fossil fuel resources, increased environmental concerns and population density. This has made energy supply one of the most important issues of today. Renewable energy resources (RER) are a significant solution for all these problems. The popularity of renewable energy is increasing as fossil fuels lead to environmental pollution and are being exhausted. In the period of 2000-2009, there were increases of 76% in oil prices, 114% in natural gas prices and 136% in coal prices. It is projected for the period of 2015-2040 that there will be increases of 186.3%, 85.7% and 56.3% in oil, natural gas, and coal prices, respectively. Considering the projections, it is important to increase renewable energy resources. Renewable energy is considered as inexpensive,

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Section: Permanent Magnet Synchronous Generatormentioning

confidence: 99%

A Comparative Study of PM Synchronous Generator for Micro Hydropower Plants

Dalcalı¹

2021

Balkan Journal of Electrical and Computer Engineering

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“…Indeed, PM machines are preferred for their low speed and variable speed applications. Since the parameters such as efficiency and power coefficient are independent of rotation speed in the performance of PM machine, the machines can suit for low cycle applications [10][11][12][13]. In addition to its advantages, one of the major disadvantages of PM machines is the generation of cogging torque.…”

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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