Study on Unbalanced Magnetic Pulling Analysis and Its Control Method for Primary Helium Circulator of High-Temperature Gas-Cooled Reactor

Yangbo Zheng, Ni Mo, Zhe Sun, Yan Zhou and Zhengang Shi
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Yangbo Zheng: Institute of Nuclear and New Energy Technology of Tsinghua University, Beijing 100084, China
Ni Mo: Institute of Nuclear and New Energy Technology of Tsinghua University, Beijing 100084, China
Zhe Sun: Institute of Nuclear and New Energy Technology of Tsinghua University, Beijing 100084, China
Yan Zhou: Institute of Nuclear and New Energy Technology of Tsinghua University, Beijing 100084, China
Zhengang Shi: Institute of Nuclear and New Energy Technology of Tsinghua University, Beijing 100084, China

Energies, 2019, vol. 12, issue 19, 1-17

Abstract: In addition to providing an extremely clean environment for primary loop of high-temperature gas-cooled reactor (HTR), the primary helium circulator (PHC) using electromagnetic levitation technology also provides an effective means for vibration control. Besides synchronous vibration produced by mass imbalance and sensor runout, double-frequency vibration produced by unbalanced magnetic pull (UMP) is serious in PHC engineering prototype (PHC-EP). In this paper, we firstly analyzed the mechanism of UMP and the multi-frequency vibration characteristics in combination with the PHC-EP. Then we put forward a distributed iterative learning control (ILC) algorithm and a parallel control scheme to suppress the periodic vibrations. Finally, we verified the methods by carrying out experimental researches on the active magnetic bearing (AMB) bench of PHC-EP. The results show that the methods put forward in this paper have significant control effect on the double-frequency vibration generated by UMP of the PHC-EP and provide theoretical and practical references for the PHC safe operation in HTR.

Keywords: HTR; AMB; UMP; primary helium circulator; iterative learning control (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
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