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首页> 外文期刊>IEEE Transactions on Aerospace and Electronic Systems >Dynamic modeling and controller design of flyback converter
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Dynamic modeling and controller design of flyback converter

机译：反激转换器的动态建模和控制器设计

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摘要

The accurate dynamic modeling and quantitative controller design for an isolated converter with optocoupler isolation in its feedback loop are considered to be difficult issues, since the transfer characteristics of some blocks are highly nonlinear and difficult to be modeled analytically. First a current-mode controlled flyback converter with an optically isolated feedback path is designed. Then the equivalent control system block diagram is constructed, and its block transfer functions are found. To increase the accuracy, the dynamic models of some critical blocks are estimated from measurements. In order to facilitate the controller design, the model simplification is further made. Finally, based on the reduced dynamic model, a quantitative design procedure is derived to find the parameters of the voltage controller to meet the prescribed regulating specifications. Validity of the estimated dynamic model and the proposed controller design approach is demonstrated by some simulation and experimental results
机译：隔离式转换器在其反馈回路中具有光耦合器隔离的准确的动态建模和定量控制器设计被认为是一个难题，因为某些模块的传输特性是高度非线性的，并且难以进行分析建模。首先，设计了具有光隔离反馈路径的电流模式控制反激转换器。然后构造等效控制系统框图，并找到其块传递函数。为了提高准确性，一些关键块的动态模型是通过测量来估计的。为了简化控制器的设计，进一步简化了模型。最后，基于简化的动态模型，导出了定量设计程序，以找到电压调节器的参数以满足规定的调节规格。一些仿真和实验结果证明了估计的动态模型和所提出的控制器设计方法的有效性。

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