基于解析计算的CSC-PMSG-WGS控制器PI参数设计  

Analytical-Method-Based Design of PI Parameters of Controller Used in CSC-PMSG-WGS

作　　者：茆美琴[1] 张中洋 丁勇[1] 张榴晨[1] Mao Meiqin;Zhang Zhongyang;Ding Yong;Chang Liuchen(Research Center for Photovoltaic System Engineering MOE Hefei University of Technology Hefei 230009 China)

机构地区：[1]教育部光伏系统工程研究中心(合肥工业大学),合肥230009

出　　处：《电工技术学报》2017年第20期205-212,共8页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金项目(51577047);安徽省对外科技合作项目(1604b0602015);高等学校博士学科点专项科研基金项目(201301111110005);广东省引进创新团队项目(2011N015)资助

摘　　要：在基于电流源型变换器的永磁同步风力发电系统(CSC-PMSG-WGS)控制中,比例积分(PI)控制依然是广泛采用的基本控制方法。传统PI参数设计方法由于采用诸多近似计算而使得设计结果不准确,或是由于采用智能优化算法进行参数自动寻优导致PI参数的设计方法不通用。为了综合考虑系统中控制器PI参数设计的准确性和简便性,提出一种基于解析计算的设计方法。该方法首先在分析考虑工程实际情况的控制系统传递函数基础上,推导出控制器PI参数解析计算表达式;然后按照系统性能要求及系统参数确定计算式中的关键待定参数进而得到PI参数的值;最后,针对10k W CSC-PMSG-WGS系统实例,分析采用该方法的PI参数详细设计过程。仿真和实验结果证明了采用所提控制器参数设计方法能够有效减少控制器参数设计工作量,并且取得良好的动态和稳态控制性能。The proportional-integral(PI)control is widely used in permanent magnet synchronous generator wind generation system based on current source converter(CSC-PMSG-WGS).The traditional PI parameter design methods have issues such as low accuracy caused by approximate calculation or low generality caused by intelligent optimization algorithms for searching optimal PI parameters.To design proper PI parameters for the system with comprehensive considerations ofreliability and simplicity,a general method based on the analytical method is proposed in this paper.Firstly,the transfer functions of system are analyzed considering the practical system specifications and the analytical formulas of PI parameters are derived from the transfer functions.Secondly,according to the control performance requirements and parameters of the CSC-PMSG-WGS,the key parameters in the formulas are determined,thus the final PI parameters are acquired.Finally,a10kW system is taken as an example,and the design process of PI parameters by the proposed method is presented in detail.The proposed method is verified by simulation in Matlab/Simulink and experimental results,which shows that the design of PI parameters for the controller of CSC-PMSG-WGS could be significantly simplified with expected transient and steady state control performances.

关 键 词：电流源型变换器 永磁同步发电机 直驱风力发电系统 比例积分参数设计 

分 类 号：TM614[电气工程—电力系统及自动化]