Design of Magnetic Bearings for 200 HP Class Turbo Blower

Title & Authors
Design of Magnetic Bearings for 200 HP Class Turbo Blower
Park, Cheol Hoon; Yoon, Tae Gwang; Park, Jun Young;

Abstract
Recently, the development trend of turbomachinery is high capacity and high efficiency. Most of turbomachinery in the market are adopting ball bearings or air foil bearings. However, ball bearings have a limit for high speed product over $\small{2.0{\times}10^6DN}$(product of the inner diameter of the bearing in mm (D) and the maximum speed in rpm (N)). Air foil bearings have a limit for high axial load for high power products over 200~300 HP(horse power). Magnetic bearing is one of the solutions to overcome the limits of high speed and high axial load. Because magnetic bearings have no friction between the rotor and the bearings, they can reduce the load of the motor and make it possible to increase the rotating speed up to $\small{5.0{\times}10^6DN}$. Moreover, they can have high axial load capacity, because the axial load capacity of magnetic bearing depends on the capacity of the designed electromagnet. In this study, the radial and thrust magnetic bearings are designed to be applied to the 200 HP class turbo blower, and their performance was evaluated by the experiment. Based on the tests up to 26,400 rpm and 21,000 rpm under the no-load and load condition, respectively, it was verified that the magnetic bearings are stably support the rotor of the turbo blower.
Keywords
Magnetic Bearings;Turbo Blower;Permanent Magnet;High Speed Rotor;
Language
Korean
Cited by
1.
2015년 송풍기 및 환기시스템 분야 연구동향,이장호;

한국유체기계학회 논문집, 2016. vol.19. 2, pp.55-56
2.
2015년 회전체 동역학 및 트라이볼로지 요소의 연구동향,김태호;장경은;

한국유체기계학회 논문집, 2016. vol.19. 2, pp.67-70
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