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中文摘要：
针对变换器的平均分析法无法分析变换器瞬态过程和分布参数对系统动态性能影响的问题，研究了基于变换器传输线建模技术的数字仿真方法，提出了电路元件电容、电感、开关器件和开关变换器的数字离散仿真模型，并进行了实验研究。这种离散建模技术以传输线理论为分析基础，得到的变换器数字仿真模型只与系统组成结构有关，而与系统中的开关状态无关。实验结果表明，与原有的分析变换器暂态过程的离散分析方法相比，该方法使用简单，物理概念明确，由于采用无源线性网络作为建模基础，变换器传输线建模方法的数字仿真算法具有无条件的数值收敛。
英文摘要：
Since the averaged-modeling-method was incapable to analyze converter＇s transient process as well as the influence on system dynamic performance, which was aroused by its distribute parameters, a numerical simulating method of transmission-line modeling technique was studied by both the theoretical analysis and practical experiment. The respective numerical simulating models of capacitor, inductor, switch components and switch converter were proposed. The method based on transmission-line theory. The modeling process only correlated to the circuit configuration, but had nothing to do with the switching states of the circuit. The experiment results shows that the new proposed method is much easier than the original discrete method which is mainly concerned on the analysis of converter＇s transient process, and also has a clear physical conception. The method is unconditional stable for the model is on the base of passive linear network.
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