tailieunhanh - Magnetic Bearings Theory and Applications Part 12

Tham khảo tài liệu 'magnetic bearings theory and applications part 12', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | A rotor model with two gradient static field shafts and a bulk twined heads system 125 Fig. 14-2. Result of the volt of the test using tunnel cover I-shaped coils and nitrogen Though above the examinations show 10 000 rpm the ability of the system as nitrogen gas cylinder was limited. At next step an air compressor and acrylic boards of the walls without a box tunnel model acrylic cover were preparation. During the examinations the rotary mechanism part was destroyed it in 11 809 rpm . This result was show an ability of an increase in rotation speed under this condition. Fig. 15. Result of test of the acrylic rotary mechanism part Fig. 16. View of test a Standstill b Unstable rotation c High speed rotation d Broken 126 Magnetic Bearings Theory and Applications After the acrylic ring of the rotary mechanism part of the rotor an aluminium ring with 8 holes was used in figure 17 . The both of the donut-shaped cross sections of the rotary mechanism part were needed the masking with a polyimide tape because it was absolute terms. This improved rotor was used safety. In 2009 a gauss meter was join the measurement system and Hall generator was fixed to the top of the upper head of the bulk twined heads system with polyimide tape so that the centre position on the HTS bulk placed in the upper head. The promote gas was air using an air compressor at MPa free in a meter of this device. The T-shaped coils were used. Fig. 17. View of the rotary mechanism part with an aluminium ring The result of the examinations was show that the flux flows were increase along the increase of the rotation. The results in figure 18-1 through 18-4 were show that the same examinations were ten times continuously. The vertical lines 80x10 seconds in x-axis in figure 18-1 are shown trigger marks of the rotor completely stopped. The results in figure 19-1 through 19-4 were show the same result using timeline. Figure 19-5 was show the result of temperature of each thermocouples p1 was room .

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