用于电池测试系统的双向DC/DC变换器的研究  

Research of Bi-directional DC/DC Converter Using in the Battery Test System

作　　者：魏克新[1] 高国振[1] 李华平[1] 孙强[1] 

机构地区：[1]天津理工大学天津市复杂控制系统理论及应用重点实验室,天津300384

出　　处：《电气传动》2010年第2期37-40,共4页Electric Drive

基　　金：天津市自然科学基金项目(06YFJMJC01800);天津市高等学校科技发展基金项目(2006BA24)

摘　　要：针对蓄电池常见的充放电过程,介绍了一种基于DSP的双向升降压DC/DC变换器。电路采用全桥式拓扑结构,通过双闭环串级PWM控制开关元件的通断,以实现变换器的双向升降压。重点介绍了变换器数学模型的分析以及基于LQR的最优参数整定方法。在此基础上,以系统设计的方式对其进行了Simulink仿真以及样机的测试。实验结果保持了良好的动静态特性,证明了方案的可行性。本装置与高功率因数可逆整流器级联可用于电池测试系统,实现能量的双向流动。For the charging and discharging process of battery,a kind of hi-directional buck-boost DC/DC converter based on DSP was introduced. The circuit adopts the full-bridge topology and the dual-closed loop cascade PWM control method in order to achieve the buck-boost of two-quadrant. The mathematical analysis of converter model and the optimal parameter tuning methods based on LQR were focused on. On this basis, its Simulink simulation and prototype testing were carried out. The experimental result has a good static and dynamic characteristics and it proves the feasibility of designing. The device can be used for the battery test system with a high power factor rectifier and achieve the bi-directional flow of energy finally.

关 键 词：双向DC/DC变换器 双闭环串级控制 全桥式拓扑 状态空间平均法 LQR控制 

分 类 号：TM351[电气工程—电机]