Fast Transitions Between Current Control Loops of the Coupled-Inductor Buck–Boost DC–DC Switching Converter
Fast Transitions Between Current Control Loops of the Coupled-Inductor Buck–Boost DC–DC Switching Converter
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DOI：
10.1109/tpel.2012.2231882
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发表时间：
2013-08
影响因子：
6.7
通讯作者：
C. Restrepo;T. Konjedic;J. Calvente;M. Milanovič;R. Giral
中科院分区：
文献类型：
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作者：
C. Restrepo;T. Konjedic;J. Calvente;M. Milanovič;R. Giral
一种已发表的用于耦合电感降压-升压转换器的电流控制策略能够根据瞬时工作点和施加的电流基准将其目标从控制输入电流改变到控制输出电流，反之亦然。两种基于PI的控制实现的主要缺点是当控制目标从一种电流改变到另一种电流时响应速度较慢。由于存在磁耦合，该转换器的控制到输入和控制到输出的电流小信号传递函数具有相似的一阶特性。因此，有可能将以前的控制方案转换为基于PI的控制方案，该方案表现出更快的并且在某些情况下，在输入和输出电流控制操作之间的转换更快。实验还表明，这种新的控制方式不会影响变流器的稳态行为。
An already published current control strategy for the coupled-inductor buck-boost converter is able to change its aim from controlling the input current to controlling the output current, and vice versa, depending on the instantaneous operation point and the applied current references. The main drawback of the two PI-based control implementation is its slow response when the control aim is changed from one current to the other. Due to the magnetic coupling, the converter's control-to-input and control-to-output current small signal transfer functions exhibit similar first-order characteristics. Therefore, it is possible to transform the previous control scheme to a PI-based one that exhibits faster and, in certain cases, much faster transitions between input and output current control operation. The presented experiments also show that the steady-state behavior of the converter is unaffected by the new control implementation.