基于阻力矩测量方法的高速磁悬浮飞轮损耗分析与优化  

Energy Consumption Analysis and Optimization of High-speed Magnetically Suspended Flywheel Based on Resistance Moment Measurement Method

作　　者：吕奇超 吕东元 李延宝 刘平凡 LYU Qi-chao;LYU Dong-yuan;LI Yan-bao;LIU Ping-fan(Shanghai Aerospace Control Technology Institute,Shanghai 201109;Shanghai Space Intellective Control Technology Laboratory,Shanghai 201109;School of Electrical Engineering,Southeast University,Nanjing 210096;Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing 100084)

机构地区：[1]上海航天控制技术研究所,上海201109 [2]上海市空间智能控制技术重点实验室,上海201109 [3]东南大学电气工程学院,南京210096 [4]清华大学核能与新能源技术研究院,北京100084

出　　处：《导航与控制》2021年第4期59-65,共7页Navigation and Control

基　　金：装备发展部装备预研领域基金(编号:61407210206,61402100403)。

摘　　要：磁悬浮惯性执行机构是空间飞行器姿控系统的关键执行机构,为了准确获得高速磁悬浮飞轮的能耗影响因素,对飞轮结构进行优化设计。首先分析了旋转磁通条件下磁性材料的铜损耗、磁滞损耗和涡流损耗,提出采用电机阻力矩测量方法间接测量磁悬浮飞轮内部的能量损耗,通过实际测量飞轮降速曲线和理论计算得到飞轮阻力矩,测量不同结构形式和基座材质下飞轮的阻力矩,并比较了飞轮能耗。实验结果表明,在满足飞轮其他性能情况下,增加电机定转子轴向间距、添加电机隔磁环、改变电机定子及磁轴承基座材料可以降低飞轮阻力矩。优化后的飞轮阻力矩由原来的28.7mN·m降低至21.5mN·m,能耗降低25%以上。Magnetically suspended inertial actuator is the key actuator of spacecraft attitude control system.In order to obtain the energy consumption factors of high-speed magnetically suspended flywheel accurately,the design of flywheel structure is optimized.Firstly,the copper loss,the hysteresis loss and the eddy current loss of magnetic material under the condition of rotating magnetic flux are analyzed.The internal energy consumption of magnetically suspended flywheel is indirectly measured by resistance moment measurement method is proposed.The resistance moment of flywheel is obtained by measuring the speed reduction curve and the theoretical calculation.The resistance moment of flywheel under different structure forms and replacement materials is measured,and the energy consumption of flywheel is compared.The experiment results show that the resistance moment of flywheel could be reduced by increasing the axial distance between rotor and stator of motor,adding motor magnetic-isolation ring,changing the materials of motor stator base and magnetic bearing base in the case of meeting other properties of flywheel.The resistance moment of the optimized flywheel is reduced from the original 28.7 mN·m to 21.5 mN·m,the energy consumption is reduced by more than 25%.

关 键 词：高速磁悬浮飞轮 磁轴承 阻力矩 结构优化 

分 类 号：TH133[机械工程—机械制造及自动化]