基于双PWM补偿型单相交流稳压电源的设计.PDF

20 11 年 11 月 电 工 技 术 学 报 Vol.26 No. 11 第 26 卷第 11 期 TRAN SACTION S OF CHINA ELECTROTECHNICAL SOCIETY Nov . 20 11 基于双PWM 补偿型单相交流稳压电源的设 计 赵晓红 邱瑞昌 韩啸一 闻超 庄江丽 李润新 （北京交通大学电气工程学院 北京 100044） 摘要 应用PWM 整流器代替二极管 可控整流，既减少对电网的谐波污染，又可以实现 能量双向流动。电压电流双闭环控制保证了直流侧电压的稳定和交流侧电流对电网电压的跟踪。 逆变器采用了固定开关频率的直接电流控制方法中预测电流控制，电流内环采用比例调节，提 高了电流响应速度。电压外环采用电压有效值反馈的PI 调节，保证对逆变器 出电压的稳定可 靠控制。逆变器的 出电压是补偿电压，与稳压电源的 入电压串联叠加得到稳压电源的 出 电压。利用 Simulink 仿真工具，对所设计的电源进行仿真，验证了控制策略的可行性。最后做 实验验证了设计结果。 关键词：补偿型稳压电源 PWM 整流器 逆变器 闭环控制 仿真 中图分类号：TM464 Design of Single Phase Regulated Power Supply Based on Dual PWM Converters Zhao X iaohong Qiu Ruichang Han X iaoy i Wen Chao Zhuang J iang li L i Runx in （Beij ing Jiaotong University Beij ing 100044 China ） Abstract The design in this paper u sed PWM converter instead of diode rectifier , which not only reduced the harmonic pollution to the grid but also can realized two-way flow of energy . Double closed loop control of voltage and current ensures the stability of DC voltage and the tracking of AC current to the voltage. The inverter adopts current forecast control, which is a fixed switching frequency control method in direct current control. The current loop adopted the proportional adj u stment to improved the current response. Voltage feedback loop u sing PI control of voltage RM S to ensure the stable and reliable control of the inverter ’s output voltage. The output voltage of inverter is compensating voltage. It is series with the voltage stabilizer input voltage to obtain the output voltage. U sing the Simulink , the design of power supply can be simulated. Finally the design