基于双向全桥DC-DC变换器增广状态控制系统研究  

Research on Augmented State Control System Based on Bidirectional Full-bridge DC-DC Converter

作　　者：王博洋 魏立彬 张宇 彭朝阳[2] 

机构地区：[1]中核核电运行管理有限公司,浙江嘉兴314300 [2]中国矿业大学机电与信息工程学院,北京100083 [3]福建福清核电有限公司,福建福清350318

出　　处：《电气传动》2017年第11期25-30,共6页Electric Drive

摘　　要：双向全桥DC-DC变换器广泛应用于电动汽车、新能源发电等具有能量双向流动的储能系统中。首先,在双向全桥变换器单移相控制模式基础上,应用离散采样建模方法建立了双向全桥变换器的离散小信号模型;然后,根据变换器的离散小信号模型,设计了具有无静差的增广状态反馈控制系统,通过配置系统的闭环期望极点位置使系统的阶跃响应无超调,通过仿真,验证数字闭环控制器的有效性;最后,分析了状态反馈系数矩阵对变换器系统中主要参数的敏感程度,仿真结果表明相同反馈系数下,不同系统参数对系统输出瞬态响应的影响。Bidirectional full-bridge DC-DC converter is widely used in power bidirectional flow systems,especially in electric vehicles and renewable energy generation. Firstly,on the basis of the single phase shifting control model of bidirectional full bridge,the discrete small-signal model of bidirectional full-bridge converter was established with the method of discrete sampling and modeling. Secondly,the state-feedback integral control system with zero steady-state error was designed,in which the desired closed-loop pole position was set up to achieve the step-output response with none-overshoot and the high-efficiency of the digital closed-loop controller is verified by simulation.Lastly,the susceptibility of the state-feedback coefficient matrix to the main parameters of the converter is analyzed.Besides,under the same feedback coefficient matrix,the transient response of different system parameters is proved.

关 键 词：双向全桥DC-DC变换器 单移相控制 离散采样建模 状态反馈 数字控制 

分 类 号：TP17[自动化与计算机技术—控制理论与控制工程]