开关网络中开关过程的指数衰减型电源模型及其仿真

开关网络分析的主要困难在于电路的非线性和电路拓扑结构的周期性变化。基于实际开关换相期间，开关两端电压和流过的电流的连续性要求，本文提出采用指数衰减型电源模型来等效开关的导通和断开过程。利用这种模型，可以将开关网络变换为非开关网络，从而利用结点方程，对电路进行时域分析，避免了不连续初始值的求解。实例表明，这种模型具有电路结构简单、计算精度高、编程容易、仿真时间短等优点，适用于开关网络的建模仿真。

The Model of Exponent Attenuation Power Source to Switches and Its Simulation in Switched Networks

The main difficulty to analyze the switched networks is the nonlinearity, and the changing topological structure in period. This paper presents a novel method to equal the switching course of on and off with exponent attenuation power source based on the continuity of voltage across it and the current through it on the course of commutations of switches. Using these models, we can translate switching networks to non-switched networks, so as to utilize nodal equations to analysis in time-domain, and to avoid the requesting of inconsistent initial conditions. The fact examples indicate that there are advantages such as simple modeling, high precision, easy to program and short time to simulation. It can be used in the modeling and simulation of switched networks.