Impact of Pole Pair Number on the Efficiency of an Induction Generator for a Mini Hydro Power Plant

• Autorzy: Hadžiselimović M. , Mlakar M. , Štumberger B.

Warianty tytułu

PL

Wpływ ilości par biegunów na sprawność generatora asynchronicznego w mini elektrowni wodnej

• Języki publikacji: EN

Abstrakty

EN

The aim of this paper is to analyse the impact of pole pair number on the efficiency of an induction generator designed for a mini hydro power plant. Six induction generators with different number of poles were designed: 2, 3, 6, 10 and 14. The basic point of this study is Kaplan turbine, which considering its rotational speed can be directly connected to a 14-pole induction generator. All other induction generators need a speed reducer for appropriate operation with Kaplan turbine, but speed reduction decreases the efficiency of mechanical energy conversion into electrical energy. Consequently this paper presents the efficiencies of induction generators and the summary efficiencies of an induction generator and a speed reducer. At the design phase of the aforementioned induction generators the realization possibility of the prototypes was taken into account, including the mass of active components and used materials.

PL

W artykule przedstawiono analizę wpływu ilości par biegunów na sprawność generatora asynchronicznego w mini elektrowni wodnej. W badaniach wzięto pod uwagę 6 zaprojektowanych maszyn (2, 3, 6, 10 i 14 biegunów) połączonych z turbiną Kaplana. Do wszystkich, oprócz 14biegunowej wykorzystano reduktor, który również został uwzględniony w analizie.

Słowa kluczowe

EN

hydro power plant; induction generator; analytical calculation; efficiency

PL

elektrownia wodna; generator asynchroniczny; obliczenia analityczne; sprawność

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2013
• Tom: R. 89, nr 2b
• Strony: 17--20
• Opis fizyczny: Bibliogr. 10 poz., rys., tab., wykr.

Twórcy

autor

Hadžiselimović M.

• University of Maribor, Faculty of Energy Technology
• Bartec Varnost d.o.o.

autor

Mlakar M.

• Bartec Varnost d.o.o.

autor

Štumberger B.

• University of Maribor, Faculty of Energy Technology
• Bartec Varnost d.o.o.

Bibliografia

• [1] U. Lasminto, R. Klasinc, Investigations of pumped-storage hydro plants in the alpine area, Journal of Energy Technology, August 2011, Vol. 4, Issue 3, pp. 11-22
• [2] K. Deželak, K. Dežan, J. Pihler, G. Štumberger, Investment evaluation for a small hydro power plant, Journal of Energy Technology, August 2011, Vol. 4, Issue 3, pp. 45-54
• [3] M. Blaznik, M. Hadžiselimović, B. Štumberger, I. Zagradišnik, Use of an induction machine for the generator operating mode in a small hydro power plant, Journal of Energy Technology, May 2011, Vol. 4, Issue 2, pp. 31-46
• [4] P. Virtič, J. Avsec, Analysis of coreless stator axial flux permanent magnet synchronous generator characteristics by using equivalent circuit, Przeglad Elektrotechniczny, 2011, Vol. 87, Issue 3, pp 208-211
• [5] Zagradišnik I., Hadžiselimović M., Ritonja J., Slemnik B., “The emLook software package for the analytical and numerical analyses of electrical machines”, Prz. Elektrotech., 2010, vol. 85, issue 12, pp 175-178
• [6] P. Virtič, Variations of Permanent Magnets Dimensions in Axial Flux Permanent Magnet Synchronous Machine, Przeglad Elektrotechniczny, 2011, Vol. 87, Issue 12b, pp 194-197
• [7] Zagradišnik I., Hribernik B., “Influence of anisotropy of magnetic material on the saturation harmonics in the threephase induction motor”, IEEE Transactions on Magnetics, 24 (1988), No. 1, pp 491-494
• [8] V. Prus, A. Nikitina, M. Zagirnyak, D. Miljavec, Research of rnergy processes in circuits containing iron in saturation condition. Przeglad Elektrotechniczny, 2011, Vol. 87, Issue 3, pp 149-152
• [9] Štefanko S., Slemnik B., Zagradišnik I., “Stray losses due to inter-bar currents of skewed cage induction motors at no load“, Electrical Engineering. August 2000, Vol. 82, No. 5, pp 257-262
• [10] Stermecki A., Tičar I., Zagradišnik I., Kitak P., “FEM-based design of an induction motor's part winding to reduce the starting current“, IEEE Transactions on Magnetics, 2006, Vol. 42, No. 4, pp 1299-1302