pwm整流器的模糊控制.doc

理工类毕业设计（论文）模版 （此行字体打印时删除） 燕山大学 毕业设计（论文） 学院（系） 电气工程学院 年级专业 工业自动化2班 学生姓名 周博超 指导教师 吴忠强 答辩日期 摘要 PWM整流器以其能实现稳定的直流输出、网侧输入的可控功率因数而引起国内外广泛关注。本文以单相电流型PWM整流器为研究对象，总结了电流型整流器控制策略的发展状况，在比较各种方案的优缺点的基础上，最终确定用模糊控制作为电流调节器的直接电流控制。 论文电流型单相PWM整流起的数学模型，模糊控制理论的数学基础，建立了直流电流和输入电流幅值之间的传递函数，为系统仿真打下基础。 采用模糊控制作为电流外环控制，可直接对流量进行调节，可消除稳态误差，并且调节器的设计与住电路的参数无关，同PI调节器作为内环控制器，不仅对交流侧的高次偕波可以起到很的抑制作用，还能跟好的跟随直流侧。 确定PWM二级开关作为开关控制策略，详细阐述了基本原理，基于MATLAB/Simulinkh和MATLAB/Fuzzy对其进行了仿真研究。 本课题是国家自然科技基金的后续课题，对解决电网偕波污染，提倡绿色用电有着理论上的指导意义。 关键词 整流器 PWM 模糊控制 单相电流型PWM整流器 Abstract PWM rectifier can achieve stability with its DC output, the input side of the net controllable power factor caused widespread concern at home and abroad. In this paper, single-phase current mode PWM rectifier for the study, summed up the current Rectifier control strategy of development, comparing the advantages and disadvantages of various programmes on the basis of the final set with fuzzy control as a regulator of the current direct current control. Papers of single-phase PWM current rectification from the mathematical model, fuzzy control based on the mathematical theory, a DC current and input current amplitude of the transfer function, to lay a foundation for the system simulation. Fuzzy control as the current outer ring control, directly regulate the flow, remove the steady-state error, and adjust the design parameters and live circuit has nothing to do with the inner ring as a PI regulator controller, not only to exchange the high side The kai-could play a very inhibited, but also with good follow the DC side. PWM switch identified as two switch control strategy, detailed basic principles, based on MATLAB / Simulinkh and MATLAB / Fuzzy their simulation study. This topic is the national natural science and technology fund follow-up issues, to solve the power grid kai-pollution, green electricity has advocated the theory guiding significance. Key words Rectifier fuzzy control single-phase PWM current mod