电机起动暂态的仿真及测试分析
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摘要
针对电机起动暂态仿真计算时的模型参数时变问题,以小型异步电机为对象,建立二维有限元电磁场模型。通过绕组端部电阻参数场化、端部漏感参数路化修正建立场路结合的模型。经过模型的短路仿真与解析计算对比,进行二次修正模型参数,得到场路结合的起动暂态模型,对电机性能进行仿真计算。对不同负载转动惯量下的起动时间、起动转矩、起动电流曲线、起动转速及角位移曲线等特性进行测试。经测试与仿真计算对比分析,结果表明参数修正的场路结合模型能准确地仿真计算电机起动暂态各性能。
A two-dimensional finite element electromagnetic field model of the small asynchronous motor is established to solve the problem of the time-variant of model parameters in the motor starting transient simulation.The field-circuit combined model is established by the modification of the field parameters of resistance and the path parameters of leakage inductance at the winding end.After comparing the result between short-circuit simulation and analytic calculation,the parameters of the model are modified secondly,the starting transient field-circuit combined model is obtained,and the performance of the motor is simulated and calculated.The starting time,starting current curve,starting speed and angular displacement curve,starting torque curve and other characteristics are tested under different load moment of inertia.Through the test and the simulation calculation and comparative analysis,the results show that the field-circuit model with parameters modified can simulate and calculate the motor starting transient performance accurately.
A two-dimensional finite element electromagnetic field model of the small asynchronous motor is established to solve the problem of the time-variant of model parameters in the motor starting transient simulation.The field-circuit combined model is established by the modification of the field parameters of resistance and the path parameters of leakage inductance at the winding end.After comparing the result between short-circuit simulation and analytic calculation,the parameters of the model are modified secondly,the starting transient field-circuit combined model is obtained,and the performance of the motor is simulated and calculated.The starting time,starting current curve,starting speed and angular displacement curve,starting torque curve and other characteristics are tested under different load moment of inertia.Through the test and the simulation calculation and comparative analysis,the results show that the field-circuit model with parameters modified can simulate and calculate the motor starting transient performance accurately.
引文
[1]沈艳霞,陈中伟.高性能矢量控制中电机参数辨识及速度控制策略研究[J].测控技术,2011,30(6):67-71.
[2]许大中.饱和对异步电机工作性能的影响极其计算方法[J].浙江大学学报(工学版),1959(4):21-42.
[3]许大中.鼠笼式异步电机启动性能的计算[J].浙江大学学报(工学版),1965(2):15-30.
[4]尚静,邹继斌,胡建辉.基于动态模型的场路结合法求解异步起动永磁同步电机的起动过程[J].中国电机工程学报,2003,23(8):146-150.
[5]Jain S K,Sharma J D,Singh S P.Transient performance of three-phase self-excited induction generator during balanced and unbalanced faults[J].IET Proceedings of Generations,Transmissions and Distributions,2002,149(1):50-57.
[6]高原.考虑参数变化时异步电机状态方程的解析模型[J].电机控制与应用,2016,43(3):42-48.
[7]谢颖,王泽,单雪婷,等.基于多场量的笼型感应电机三维瞬态磁热固耦合计算分析[J].中国电机工程学报,2016,36(11):3076-3084.
[8]马晓荷,沈颂华.基于MagNet的无刷交流励磁机瞬态特性仿真研究[J].微特电机,2008,36(8):23-25.
[9]张蔚,林耀明.场路结合法设计分析内置式永磁同步电机[J].微特电机,2008,36(1):25-27.
[10]卢琴芬,叶云岳.基于场路结合模型的深槽式单相直线感应电机特性研究[J].中国电机工程学报,2009,29(18):89-93.
[11]周通.异步电动机起动发电过程的仿真研究[D].兰州:兰州交通大学,2011.
[12]鲍远慧,陈思.一种电机转速数字化测量方案设计[J].测控技术,2015,34(4):139-141.
[2]许大中.饱和对异步电机工作性能的影响极其计算方法[J].浙江大学学报(工学版),1959(4):21-42.
[3]许大中.鼠笼式异步电机启动性能的计算[J].浙江大学学报(工学版),1965(2):15-30.
[4]尚静,邹继斌,胡建辉.基于动态模型的场路结合法求解异步起动永磁同步电机的起动过程[J].中国电机工程学报,2003,23(8):146-150.
[5]Jain S K,Sharma J D,Singh S P.Transient performance of three-phase self-excited induction generator during balanced and unbalanced faults[J].IET Proceedings of Generations,Transmissions and Distributions,2002,149(1):50-57.
[6]高原.考虑参数变化时异步电机状态方程的解析模型[J].电机控制与应用,2016,43(3):42-48.
[7]谢颖,王泽,单雪婷,等.基于多场量的笼型感应电机三维瞬态磁热固耦合计算分析[J].中国电机工程学报,2016,36(11):3076-3084.
[8]马晓荷,沈颂华.基于MagNet的无刷交流励磁机瞬态特性仿真研究[J].微特电机,2008,36(8):23-25.
[9]张蔚,林耀明.场路结合法设计分析内置式永磁同步电机[J].微特电机,2008,36(1):25-27.
[10]卢琴芬,叶云岳.基于场路结合模型的深槽式单相直线感应电机特性研究[J].中国电机工程学报,2009,29(18):89-93.
[11]周通.异步电动机起动发电过程的仿真研究[D].兰州:兰州交通大学,2011.
[12]鲍远慧,陈思.一种电机转速数字化测量方案设计[J].测控技术,2015,34(4):139-141.