文档介绍：湖南文理学院课程设计报告课程名称: 自动化系统课程设计专业班级: 自动化 1010 2班学号( 20 ) 学生姓名: 颜志雄指导教师: 李建英完成时间: 2013 年 12月 27 日报告成绩: 评阅意见: 评阅教师日期摘要在电力系统中, 电压和电流应是完好的正弦波。但是在实际的电力系统中, 由于非线性负载的影响, 实际的电网电压和电流波形总是存在不同程度的畸变, 给电力输配电系统及附近的其它电气设备带来许多问题,因而就有必要采取措施限制其对电网和其它设备的影响。本文对单相 PWM 整流器进行了分析, 推导出了相应的数学模型和控制结构框图。针对单相 PWM 整流器建模难和电流、电压控制环的 PI 调节器设计难的问题,提出了一种基于古典线性控制对非线性进行线性化和输入输出能量守恒相结合的单相 PWM 整流器的 PI 调节器的设计方法。分别对电流、电压控制环的调节器进行了选型和参数设计, 并对改进型阳调节器进行了设计验证。为了抑制系统输出直流电压的跌落及消除电压谐波, 采用了基于系统数学模型的电压补偿控制对其进行了有效的抑制,能得到稳定且谐波含量少的输出直流电压。本文对单相 PWM 整流器的拓扑结构进行了选择,并对系统主电路, IGBT 整流桥的驱动电路,直流电压、交流电流及电网电压同步信号的采样电路, DSP 控制电路等进行了设计以及软件设计。通过仿真验证了系统能很好实现高功率因数电能变换和电能的双向流动,进行的部分实验验证了 PWM 脉冲控制的合理性和正确性, 具有一定的理论价值和应用价值。关键词: PWM 整流器; 高功率因数; 能量回馈;Matlab 仿真;PR 调节器; ABSTRACT In the power system, the voltage and current should be intact sine wave. But in actual in power system, due to the influence of nonlinear load, the actual grid voltage and current waveform is always there exists different degree of distortion, to electricity transmission and distribution system and the nearby other electrical equipment brings many problems, so it is necessary to take measures to limit the influence of power grid and other equipment. This paper analyzed single-phase PWM rectifier is deduced, the corresponding mathematical model and control structure diagram. For single-phase PWM rectifier modeling difficult and current, voltage control ring PI adjuster design, the difficult question is proposed based on the classical linear control for nonlinear linearization and input/output energy bination of single-phase PWM converter PI adjuster design method. On the current, voltage control respectively the ring modulators selection and parameter design, and the modified Yang regulator to design verification. In order to restrain the system output voltage drop and eliminate voltage harmonic, using mathematical model based on the system of pensation control of its effective suppression, can get stable and harmonic content is less output voltage. This paper