耦合电感升压DC-DC变换器的动力学特性

S. Dwari, S. Jayawant, T. Beechner, S. Miller, A. Mathew, M. Chen, J. Riehl, J. Sun
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引用次数: 40

摘要

介绍了电感耦合升压型DC-DC变换器的动态特性。研究了变换器在连续导通模式和断续导通模式下的工作。定义了一个等价于电感磁芯磁通的状态变量,避免了用电感断续电流作为状态变量的问题。建立了变换器在峰值电流控制下的动态模型。计算了所有动态模型的控制输出传递函数,并通过实验测量进行了验证。提供了与传统升压变换器的比较
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Dynamics Characterization of Coupled-Inductor Boost DC-DC Converters
Dynamic characterization of the coupled-inductor boost DC-DC converter is presented. Operating of the converter in both continuous conduction mode (CCM) and discontinuous continuous conduction mode (DCM) are studied. A state variable equivalent to the inductor core magnetic flux is defined to avoid the problem with using the discontinuous inductor current as a state variable. Dynamic model of the converter under peak-current control is also developed. Control to output transfer functions are calculated for all the dynamic models and are validated by experimental measurements. A comparison to the conventional boost converter is provided
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