磁集成开关变换器的小信号建模方法

Small Signal Modeling Methods of Switched-Mode Converter with Magnetic Integration

全面认识和客观评价磁集成技术对开关变换器稳态和动态性能的影响,需要建立磁集成开关变换器的小信号模型。论文以集成磁件分析方法为基础,结合状态空间平均法,分别提出三种磁集成开关变换器小信号建模方法,为这类变换器的动态特性研究和控制设计建立理论基础。以磁集成有源钳位正激变换器为研究对象,分别对这三种建模方法做详细阐述。

To fully understand and objectively evaluate the influence of magnetic integration technology on the performance of switched-mode converter at steady state and transient state, a general small signal model needs to be established. In this paper, based on integrated magnetic component analysis and the state-space averaging method, three small-signal modeling methods of switched-mode converter with magnetic integration have been respectively proposed. These methods can provide a theoretical basis for dynamic characteristics study and control design of such converters. An active clamped forward converter with magnetic integration has been taken as an example to illustrate the proposed modeling methods.