模糊PID复合控制的移相全桥ZVS PWM变换器设计研究  

Design and Research of Phase Shifted Full Bridge ZVS PWM Converter Based on Fuzzy PID Compound Control

作　　者：叶玉曜 张振国[1] 李树娟[1] 邓得洋 

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《软件导刊》2018年第1期175-178,共4页Software Guide

摘　　要：随着数字开关电源的不断发展,为实现一种高效稳定且适用于DSP控制的高频化高效率新型数字开关电源DC/DC变换器,通过采用移相全桥ZVS PWM变换器结构,使用模糊自整定PID复合控制调节电压以消除系统控制盲区及稳态误差,利用DSP自身的硬件资源实现移相控制脉冲,依据计算结果采用合理器件参数完成系统硬件构建,并最终利用MATLAB进行了仿真。仿真结果表明,该变换器不论在恒定负载还是负载突变时,均能在0.05s内将输出电压值稳定在48V,反应迅速,输出波形稳定,验证了设计的合理可行。With the continuous development of the digital switching power supply, for designing a highly efficient and stable DC/ DC converter which is adapted in DSP controlled high frequency and efficiency digital switching power supply, this paper used phase shifted full bridge ZVS PWM converter structure, fuzzy self-tuning PID compound strategy to control voltage and eliminate the blind area and the steady-state error, DSP own hardware resources to realize phase shift control pulse and calculation results to construct hardware system. The simulation was carried out by using MATLAB. The simulation results showed that the output voltage of the converter could be stabilized in 48V within 0.05s, and the output waveform was stable, no matter with the constant load or load mutation, which verified the rationality and feasibility of the design.

关 键 词：DC/DC变换器 移相全桥 模糊自整定 PID控制 DSP 

分 类 号：TP319[自动化与计算机技术—计算机软件与理论]