HTGR Knowledge Base

Conference Article: A Flexible Rotor In HTR-10 Passing Through The First Bending Critical Speed 24,000 RPM

Huidong Gu, Hongbin Zhao, Department of Engineering Physics, Tsinghua University, Beijing, CHINA; Lei Zhao, Lei Shi, Xingzhong Diao, Suyuan Yu, , Institute of Nuclear and New Energy Technology, Beijing, CHINA

Abstract

Because active magnetic bearing has many particular properties, it might be the best way to support the motor rotor and gas turbine rotor in the 10MW high temperature gas-cooled test module reactor. In this paper, aiming at the small experiment setup of HTR-10, more accurate and higher mathematic model of AMB flexible rotor system than the rigid one was formulated with subsection discrete method to formulate. A controller with LQG plus some phase lead compensator was design and was applied to actual rotational experiments. Form the experiments’ results, the rotor could not only run up to 400 Hz, above the first BCS (346Hz), but also stay at that speed stably and safely for a long time. This whole system is very useful to the further big setup.

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key words: High temperature gas cooled test module reactor (HTR), active magnetic bearing (AMB), bending critical speed (BCS), linear quadratic Gaussian (LQG)
Reference:
Proceedings of the Conference on High Temperature Reactors, Beijing, China, September, 22-24, 2004
International Atomic Energy Agency, Vienna (Austria)
HTR-2004, pp:1-9