换相重叠角的计算机仿真及辩识  

Identification and Simulation for Overlapping Angle of Excitation Generator

作　　者：郑思凡[1] 杨冠鲁[1] 

机构地区：[1]华侨大学信息科学与工程学院,福建泉州362021

出　　处：《华侨大学学报（自然科学版）》2009年第3期272-276,共5页Journal of Huaqiao University(Natural Science)

基　　金：福建省自然科学基金资助项目(E0510021);国务院侨办科研基金资助项目(04QZR04)

摘　　要：为避免繁杂的等效电抗测量计算,在确定发电机无刷励磁系统换相重叠角时,将其作为系统辨识的一个待估参数.在估计出电枢电感参数的基础上,从二极管的广义牛顿拉夫逊迭代模型与储能元件的离散化伴随模型出发,对无刷励磁系统的三相不可控整流电路进行仿真,并与换相重叠角的近似解析公式比较.经验证,仿真结果与解析式相对误差均值在1%以内,说明模型在这两个参数变动范围内有良好的泛化与逼近能力,可作为进一步发电机评估建模基础.仿真程序可以代替实际的无刷励磁模型,参与换相重叠角的辩识及可行的重叠值范围估计.To avoid complicated calculation or measurement of the equivalent electric resistance while determining the brushless excitation system generator for overlap angle. The article treats the resistance as a parameter to be system identificated, then presents a algorithm simulation for three phase uncontrollable rectifying circuit of the brushless excitation system based on the generalized Newton Raphson iterative model from diode and discretization adjoint model of energy storage component after estimating armature inductance. The simulation outcome are compared with theoretic formula of overlap angle, the result show that the mean relative error between simulation and theoretic result is less than 1 percent. Finally, the paper demonstrate that the simulation model has a good generalization and approximation ability to real model with these two parameter value changing in desired scope and so it can identify overlap angle and estimate it＇s feasible scope for advanced generator modeling.

关 键 词：换相重叠角 三相不可控整流 伴随模型 无刷励磁发电机 系统辩识 

分 类 号：TM330.12[电气工程—电机]