用高阶混合有限元法分析同步电机异步运行特性  

The Analysis of Asynchronous Operation Characteristics of Synchrnous Machines Using High-order Mixed Finite Ele-ment Method

作　　者：廖民[1] 姜可薰[2] 

机构地区：[1]成都科技大学电力系 [2]重庆大学

出　　处：《成都科技大学学报》1992年第2期81-87,共7页

摘　　要：为了在分析计算同步电机异步运行特性时能较好地考虑磁饱和效应和涡流效应,本文提出了计算电机内非线性涡流电磁场(包括速度涡流)的高阶直边、曲边单元相结合的高阶混合有限元法,以便更为有效、准确地计算同步电机的稳态异步运行特性.文中得出了相应的计算格式和固有矩阵.推导出了用电磁场量计算电磁转矩的通用公式.最后,以一台同步电动机异步起动为例,分析计算其稳态异步运行特性、励磁绕组附加电阻对起动特性的影响.计算表明,本文方法所得结果比传统方法的结果更为接近实测值.A high-order mixed finite element method,which is more adapatable to the solution of the nonlinear eddy current electromagnetic fields(including volocity eddy current),is presented in this paper.This method can be used to calculate asynchronous operation characteristics of synchronous machines more accurately and effectively.Corresponding universal matrices and calculating fo- rmulae are obtained.And the general formulae of torgue using electromagnetic quantites are also derived. The starting performances and the affection of starting resistance are calcu- lated and analysied as an example.The results of the new method are closer to the measurements than those of the traditional methods.

关 键 词：有限元法 同步电机 异步运行 

分 类 号：TM341[电气工程—电机]