Ming CHENG, Xinfu NİNG, Xinkai ZHU, Yubin WANG

Tek ve Çift Kutuplu İç Statorlu Olan 10 MW HTS Tahrikli Çift Statorlu Doğrudan Tahrikli Rüzgâr Jeneratörlerinin Uyarma Çalışma Noktalarının Seçimi

Yüksek sıcaklık süper iletkenliği (HTS) tahrikli çift stator olan doğrudan tahrikli rüzgar jeneratörü (HTS-DSDDG), çift stator yapısı kullanılarak soğutma sisteminin statik sızdırmazlığını ve akımın fırçasız aktarmasını eşzamanlı olarak sağlayabilmekte olduğu için açık deniz rüzgar jenerasyonunun gelecek vadeden bir yöntemidir. Bu çalışmada, sırasıyla tek kutuplu uyarma ve çift kutuplu uyarma olarak belirlenmek olan, HTS bobininin iki çeşit yerleştirme stratejisi önerilmektedir. Üstelik, HTS bobininin uyarma çalışma noktalarını belirlemek için bu çalışmada HTS kablolarının tüketimi ile tek/çift kutuplu HTS-DSDDG’lerin hacmi arasındaki ilişki kantitatif olarak araştırılmaktadır. HTS bobinlerinin farklı yerleştirme stratejileri, uyarma çalışma noktalarının, jeneratör boyutlarının ve HTS kabloları tüketiminin farklarına neden olacağından dolayı tek ile çift kutuplu HTS-DSDDG elektromanyetik verimi, ağırlığı ve malzeme masrafı açısından karşılaştırılmaktadır. Sonuç olarak, çift kutuplu HTS-DSDDG'nin tek kutuplu HTS-DSDDG'den daha hafif ve daha düşük maliyetli olduğu çıkarılmaktadır.

Selection of excitation operating points of 10 MW HTS exciting double stator direct-drive wind generators having single and double polarity inner stator

The high temperature superconducting (HTS) exciting double stator direct-drive wind generator (HTS-DSDDG) is a promisingapproach for offshore wind generation, due to the fact that double-stator structure is employed to simultaneously realize stationaryseal of the cooling system and brushless of current transfer. In this paper, two kinds of placement strategies of HTS coils areproposed, denoted as single-polarity excitation and double-polarity excitation, respectively. Furthermore, the relationship betweenthe consumption of HTS wires and the volume of the single-/double-polarity HTS-DSDDGs is quantitatively investigated todetermine the excitation operating points of HTS coils. Since the different placement strategies of HTS coils will lead to differencesof the excitation operating points, as well as differences of generator size and HTS wires consumption, the single-/double-polarityHTS-DSDDGs are compared in terms of the electromagnetic performance, the weight and the material cost. Finally, the conclusionis drawn that the 10 MW double-polarity HTS-DSDDG is lighter and lower cost than the single-polarity one.

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