Magnet eddy-current loss reduciton in a high-speed permanent magnet machine with concentrated windings

• Autorzy: Młot A. , Łukaniszyn M. , Korkosz M.

Warianty tytułu

PL

Redukcja strat wiroprądowych w magnesach w wysokoobrotowym silniku synchronicznym z uzwojeniami skupionymi

• Języki publikacji: EN

Abstrakty

EN

A radial high-speed permanent magnet (PM) machine with concentrated windings (operating frequency up to 800Hz) is selected for automotive application based on hybrid variants. This paper presents selected methods for magnet eddy-current loss reduction by rotor and stator modifications. The first approach to rotor modification regards magnet segmentation in circumferential and axial directions. The second approach is based on changes in tooth-tips shape. The best variants of tooth-tip shapes are determined for further investigation, and adapted with rotor having magnet segmentation. The machine with segmented magnet leads to magnet loss reduction by 81%. Further loss reduction by 45% can be realized with the proposed tooth-tip shape. Furthermore, the most important machine parameters are investigated. The 2-D and 3-D finie element analysis (FEA) is used for electromagnetic analysis. An experimental approach based on a partially wound stator is employed to verify the 3-D FEA.

PL

Celem pracy jest zaprezentowanie wybranych technik redukcji prądȯw wirowych w magnesach w wysokoobrotowym (częstotliwość zasilania do 800Hz) silniku synchronicznym z magnesami trwałymi, przeznaczonym do aplikacji w ciężkich pojazdach z napędem elektrycznym. W pierwszym podejściu zastosowano segmentacje magnesów w kierunku osiowym i radialnym (redukcja prądów wirowych indukowanych w magnesach do 80%). W drugiej metodzie zbadano kształt profilu nabiegunników stojana (obniżenie strat mocy w magnesach do 45%). Finalnym celem pracy będzie wybranie najlepszych wariantów nabiegunnika stojana i zaadoptowanie ich do silnika z segmentacją magnesów, co powinno znacznie poprawić sprawność silnika. Dla tych rozwiązań zbadano najważniejsze parametry silnika. Obliczenia numeryczne przeprowadzono na modelach polowych 2-D i 3-D bazujących na metodzie elementów skończonych.

Słowa kluczowe

EN

magnet loss reduction; magnet segmentation; permanent magnet machine; high-speed motor

PL

redukcja strat mocy w magnesach; segmentacja magnesów; silnik z magnesami trwałymi

• Wydawca: Sieć Badawcza Łukasiewicz - Górnośląski Instytut Technologiczny
• Czasopismo: Maszyny Elektryczne : zeszyty problemowe
• Rocznik: 2015
• Tom: Nr 3 (107)
• Strony: 31--37
• Opis fizyczny: Bibliogr. 18 poz., rys., tab.

Twórcy

autor

Młot A.

• Faculty of Electrical Engineering, Automatic Control and Informatics, Opole University of Technology, ul. Prószkowska 76, 45-758 Opole, Poland

autor

Łukaniszyn M.

• Faculty of Electrical Engineering, Automatic Control and Informatics, Opole University of Technology, ul. Prószkowska 76, 45-758 Opole, Poland

autor

Korkosz M.

• Faculty of Electrical and Computer Engineering, Rzeszow University of Technology, ul. Wincentego Pola 2, 35-959 Rzeszów, Poland

Bibliografia

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