双凸极发电机系统的模型辨识与验证  

Model Identification and Experimental Validation of Doubly Salient Electrical Generator

作　　者：魏佳丹[1] 周波[1] 

机构地区：[1]航空电源航空科技重点实验室(南京航空航天大学),江苏省南京市210016

出　　处：《中国电机工程学报》2008年第11期139-144,共6页Proceedings of the CSEE

基　　金：国家重点基础研究发展计划项目(973项目)(2007CB210302);航空支撑科技基金项目(H0324-032);江苏省高技术项目(BG2004009)~~

摘　　要：电励磁双凸极发电机由于其非线性电感特性导致数学模型中存在较多不确定参数,因此难以通过电机数学模型选择合适的控制方法以优化系统的控制参数。该文利用电机数学模型确定系统模型的类别,对开环电机系统的脉冲响应结果采用一种简单的、叠加拟合的辨识方法获取系统的传递函数,并将辨识传递函数通过闭环特性、动态响应与抗扰动三方面的仿真结果与实际闭环系统相比较,分析辨识函数的准确性,对辨识系统通过动态特性仿真来选择和改进系统的控制方法,以改善系统性能。以实验室一台原理样机系统进行试验验证,试验结果验证了辨识函数的准确性,以此改进控制参数后的系统具有良好的动、稳态特性。The transfer function of doubly salient electrical generator （DSEG） obtained through the math model has many uncertain parameters because of its nonlinear inductance. It is difficult to get the appropriate control method and optimize the control parameters by the mathematical matrix. This paper first gets the sort of the system mathematic model, then uses the identification method of superposition fitting to get the transfer function by the pulse-response results of the open-loop system. The transfer function is compared with the actual system in order to confirm the veracity of the identification function by closed-loop, dynamic and disturbance attenuation characteristics. The simulation using Matlab tools is given to improve the control method, and enhance the system performance. Experimental results from a laboratory prototype demonstrate the veracity of the function and improved the system by optimized control parameters.

关 键 词：传递函数 电励磁双凸极发电机 非线性电感 辨识方法 叠加拟合 

分 类 号：TM31[电气工程—电机]