具有快速瞬态响应的升压PFC AC/DC转换器的无传感器控制

2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2013-03-17 DOI:10.1109/APEC.2013.6520233

M. Pahlevaninezhad, P. Das, G. Moschopoulos, P. Jain

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引用次数: 16

摘要

本文提出了一种不使用电流传感器控制升压PFC AC/DC变换器的新方法。由于升压PFC AC/DC变换器的特殊结构，变换器的无传感器控制非常具有挑战性。如本文所示，变换器在某些工作点上失去了可观测性。这就是升压PFC的无传感器控制需要特别关注的原因。本文提出了一种非常简单实用的方法，可以准确地估计变换器整个工作范围内的电感电流。此外，为了改善单相升压PFC变换器的暂态响应，提出了一种非常简单实用的闭环控制方法。这种方法消除了从输出电压中滤波双频纹波的需要，从而可以增加外部电压环的带宽。仿真和实验结果验证了该技术的可行性，并证实了其与传统控制系统相比的优越性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Sensorless control of a boost PFC AC/DC converter with a very fast transient response

This paper presents a novel approach to control a boost PFC AC/DC converter without using any current sensors. Due to the particular structure of the boost PFC AC/DC converter, sensorless control of the converter is very challenging. As illustrated in this paper, the converter loses its observability for some operating points. This is the reason that the sensorless control of the boost PFC entails special attentions. A very simple and practical senseless scheme is proposed in this paper, which is able to accurately estimate the inductor current for the entire operating range of the converter. In addition, a very simple and practical closed-loop control approach is proposed in order to improve the transient response of the single-phase boost PFC converter. This approach eliminates the need for filtering double frequency ripple from the output voltage, which allows increasing the bandwidth of the external voltage loop. Simulation and experimental results validate the feasibility of the proposed technique and confirm its superior performance compared to the conventional control system.

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2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)

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