矿用永磁调速装置调速机构性能研究
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摘要
介绍了矿用永磁调速装置的结构和原理,设计了一种基于正弦曲线的调速沟槽形式,并对调速沟槽的接触应力进行有限元分析计算。将永磁调速装置中的轴向力与气隙值进行函数曲线拟合,结合调速沟槽的特性曲线得出不同气隙下调速所需的扭矩值;通过试验得到执行器实际输出扭矩值,将扭矩的理论计算值与试验结果进行对比,发现两者变化趋势相同,扭矩峰值误差为5.5%,吻合度较高。通过函数曲线拟合的数值计算方法量化了不同气隙下的调速扭矩值,可为永磁调速装置调速机构的研究提供技术支持。
Structure and principles of mine-used permanent magnet speed regulator were introduced.A sinusoidal-based speed regulating groove was designed and contact stress of the groove was analyzed by finite element method.Axial force and air gap value in the permanent magnetic speed regulator were fitted by function curve,according to characteristic function curve of the groove,torque values under different air gaps were obtained.Actual output torque of actuator was obtained through test.By comparing theoretical calculation value of torque with the test results,it is found that both have the same change trend and high coincidence degree,peak torque error was 5.5%.Through numerical calculation method of function curve fitting,the value of speed regulation torque under different air gaps is quantified,which canprovide technical support for research of speed regulating mechanism of permanent magnet speed regulator.
Structure and principles of mine-used permanent magnet speed regulator were introduced.A sinusoidal-based speed regulating groove was designed and contact stress of the groove was analyzed by finite element method.Axial force and air gap value in the permanent magnetic speed regulator were fitted by function curve,according to characteristic function curve of the groove,torque values under different air gaps were obtained.Actual output torque of actuator was obtained through test.By comparing theoretical calculation value of torque with the test results,it is found that both have the same change trend and high coincidence degree,peak torque error was 5.5%.Through numerical calculation method of function curve fitting,the value of speed regulation torque under different air gaps is quantified,which canprovide technical support for research of speed regulating mechanism of permanent magnet speed regulator.
引文
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[2]周晓明.永磁调速在640MW机组凝结水泵节能改造上的应用[J].水泵技术,2016(1):20-22.
[3]赵爱军,申玉荣,孙承勇,等.永磁调速技术在电厂辅机循环水泵节能中的应用[J].自动化技术与应用,2016,35(7):70-72.ZHAO Aijun,SHEN Yurong,SUN Chengyong,et al.Energy-saving applications of permanent magnet speed control technology for auxiliaries[J].Techniques of Automation and Applications,2016,35(7):70-72.
[4]安金辉.调速型液力偶合器在煤矿中的应用[J].中国新技术新产品,2010(5):136.
[5]孙中圣,李新泉,李小宁.永磁涡流调速器研究与应用[J].机械制造与自动化,2016,45(3):1-4.SUN Zhongsheng,LI Xinquan,LI Xiaoning.Research on permanent magnet adjustable speed driver and its application[J].Machine Building&Automation,2016,45(3):1-4.
[6]LUBIN T,FONTCHASTAGNER J,MEZANI S,et al.Comparison of transient performances for synchronous and eddy-current torque couplers[C]//XXII International Conference on Electrical Machines,Lausanne,2016.
[7]王向东,李邦达.矿用隔爆型永磁调速器的设计与实现[J].煤矿机电,2015(5):32-35.WANG Xiangdong,LI Bangda.Design and implementation of mine explosion-proof permanent magnent speed regulation[J].Colliery Mechanical&Electrical Technology,2015(5):32-35.
[8]王汉生.永磁传动技术在带式输送机中的应用[J].起重运输机械,2015(12):23-25.WANG Hansheng.Application of magnetic driving technology in belt conveyer[J].Hoisting and Conveying Machinery,2015(12):23-25.
[9]牛耀宏.矿用永磁磁力偶合器设计理论及实验研究[D].北京:中国矿业大学,2014.
[10]WITCZAK P,KUBIAK W,LEFIK M,et al.Modalfrequency spectrum of magnetic flux density in air gap of permanent magnet motor[J].Archives of Electrical Engineering,2014,63(1):29-46.