| 三瓦双向箔片轴承-高速电机转子系统动力学研究 |
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| 引用本文： | 程文杰,邓志凯,肖玲,钟斌,张博,孙岩桦,段文博.三瓦双向箔片轴承-高速电机转子系统动力学研究[J].振动与冲击,2021(1):218-225. |
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| 作者姓名： | 程文杰 邓志凯 肖玲 钟斌 张博 孙岩桦 段文博 |
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| 作者单位： | 西安科技大学理学院力学系;西安科技大学机械工程学院;华东交通大学机电与车辆工程学院;机械结构强度与振动国家重点实验室（西安交通大学）;西安应用光学研究所 |
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| 基金项目： | 国家自然科学基金(51705413,51705416,11502196);中国博士后基金(2017M613291XB)。 |
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| 摘 要： | 以10 kW,120 000 r/min的超高速永磁同步电机为实验样机,对三瓦双向箔片轴承-电机转子系统动力学行为进行实验研究.分析了三瓦双向箔片轴承的承载特点,在对轴承刚度和阻尼系数适当简化的基础上,计算了弹性支撑时的转子锥动模态频率和平动模态频率.在样机上进行了30 000 r/min,60 000 r/min的升...
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| 关 键 词： | 三瓦双向箔片轴承 超高速电机 亚同步涡动 刚体模态 转子动力学 |
Dynamic characteristics of a rotor system with 3-pad bidirectional GFB and high speed motor |
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| CHENG Wenjie,DENG Zhikai,XIAO Ling,ZHONG Bin,ZHANG Bo,SUN Yanhua,DUAN Wenbo.Dynamic characteristics of a rotor system with 3-pad bidirectional GFB and high speed motor[J].Journal of Vibration and Shock,2021(1):218-225. |
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| Authors: | CHENG Wenjie DENG Zhikai XIAO Ling ZHONG Bin ZHANG Bo SUN Yanhua DUAN Wenbo |
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| Affiliation: | (College of Science,Xi’an University of Science and Technology,Xi’an 710054,China;School of Mechanical Engineering,Xi’an University of Science and Technology,Xi’an 710054,China;School of Mechanical and Electrical Engineering,East China Jiaotong University,Nanchang 330000,China;State Key Lab for Strength and Vibration of Mechanical Structures,Xi’an Jiaotong University,Xi’an 710049,China;Xi’an Institute of Applied Optics,Xi’an 710065,China) |
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| Abstract: | Taking a permanent magnet synchronous motor with 10 kW and 120000 r/min ultra-highspeed as a test prototype,tests were conducted to study dynamic behavior of arotor system with 3-pad bidirectional gas foil bearing(GFB)and high-speed motor.The 3-pad bidirectional GFB’s load-bearing features were analyzed,natural frequencies of conical and parallel whirling modes of the elastically supported rotor system were calculated based on an appropriate simplification ofbearing stiffness and damping coefficients.30000 r/min and 60000 r/min speed-up tests and a 90000 r/min free deceleration test were conducted on the prototype.Test results showed that the take-off speed of the rotor is about 4000 r/min;when the rotor running at 90000 r/min,there is a strong sub-synchronous whirl frequency,it is completely caused by the system itself;the rotor system with 3-pad bidirectional GFB has a better stability;the theoretical analysis and test results here provide a reference for designing ultra-high speed permanent magnet motor shafting and its dynamic analysis. |
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| Keywords: | 3-pad bidirectional-foil bearing(GFB) ultra-high-speed motor sub-synchronous whirl rigid body mode rotor dynamics |
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