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首页> 外文期刊>Power Electronics, IET >Self-tuning indirect adaptive control of non-inverting buck–boost converter
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Self-tuning indirect adaptive control of non-inverting buck–boost converter

机译:同相降压-升压转换器的自调谐间接自适应控制

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摘要

This study presents an approach to system identification and adaptive control of a non-inverting buck–boost converter in the presence of large signal changes, uncertainty of converter components and effects of imperfect modelling. Feedback loops of DC–DC converters are typically designed conservatively so that the closed-loop regulation and stability margins are maintained over a pre-determined range of operating conditions. The proposed approach is able to keep a high-performance response without the instability issue of dynamic change of the converter. In the presence of uncertainty on the parameters of a DC–DC converter, a digital adaptive controller based on system identification and minimum degree pole placement is proposed. To verify the validity of the proposed digital controller, an experimental setup is constructed for a non-inverting buck–boost converter and the fully digital adaptive control is implemented by a micro controller. The experimental results show the capability of an adaptive controller during different operating points.
机译:这项研究提出了一种在大信号变化,转换器组件的不确定性和不完美建模影响的情况下,用于同相降压-升压转换器的系统识别和自适应控制的方法。 DC-DC转换器的反馈环路通常采用保守的设计,以便在预定的工作条件范围内保持闭环调节和稳定性裕量。所提出的方法能够保持高性能响应,而不会出现转换器动态变化的不稳定性问题。在DC-DC转换器参数不确定的情况下,提出了一种基于系统识别和最小度极位置的数字自适应控制器。为了验证所提出的数字控制器的有效性,针对同相降压-升压转换器构建了实验装置,并通过微控制器实现了全数字自适应控制。实验结果表明了自适应控制器在不同工作点的能力。

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