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开关变换器调制与控制技术综述

DOI: 10.13334/j.0258-8013.pcsee.2014.06.001, PP. 815-831

Keywords: 开关变换器,电压型控制,电流型控制,电荷型控制,磁通型控制,V控制,脉宽调制,脉冲频率调制

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Abstract:

在归纳和总结开关变换器控制技术的基础上,根据电压、电流、电荷和磁通4个基本物理量,将控制技术划分为4类基本型控制(即电压型、电流型、电荷型和磁通型)和组合型控制。按照占空比实现方式的分类,存在两种基本的调制,即脉冲宽度调制和脉冲频率调制。指出开关变换器的控制技术是由“控制”与“调制”相结合而形成的。利用调制与控制结合的概念,系统地分析基本型控制和组合型控制的工作原理、本质特点、内在关系和优缺点,为开关变换器调制与控制技术的应用提供参考。根据对偶原理,将现有的控制技术拓展到输出恒流控制,并对其进行简要分析。

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