摘要
在DC/DC变换器优化动态特性的研究中,关键决定于主电路控制系统结构和参数。DC/DC变换器通过终端特性实现能量的传递;而DC/DC变换器动态特性不仅与输入输出状态相关,也与本身的终端特性相关。由于在DC/DC变换器超载情况下,终端特性具有线性特性,理论上可以参考线性系统理论,对DC/DC变换器的各个终端特性做阶跃响应,可预测相应的动态特性。为了验证上述方法的正确性与可行性,设计合适的DC/DC变换器,根据小信号模型,推导出终端特性,然后利用终端特性预测动态特性,最后再在saber仿真平台搭建相应DC/DC变换器仿真动态特性,并与预测结果相比较。结果表明改进方法正确可行。
The terminal characteristics of DC/DC are intrinsic characteristics, depending on its structures and pa- rameters in main circuit and controlling system. The energy flows from input to output through the terminal character- istics ; the dynamic characteristics are not only related to the state of input and output but also the terminal character- istic. The terminal characteristics are lineal when the DC/DC converter is working under overload, so it is feasible to do step responses to predict its dynamics refer to linear system theory. For prove the method is correct and practica- ble, a DC/DC converter was designed. Employing its small signal model to get the terminal characteristics, the dy- namics characteristics were further predicted. At last, the simulation was carred out under saber simulation platform to get the input/output voltage/current and compare with those from predicting. It draws the conclusion that the meth- od is absolutely right and feasible.
出处
《计算机仿真》
CSCD
北大核心
2013年第6期138-142,共5页
Computer Simulation
关键词
直流变换器
动态特性
终端特性
仿真
DC/DC converter
Dynamics characteristic
Terminal characteristic
Simulation
