文章基本信息

标题：Nonlinear Dynamics and Performance Analysis of a Buck Converter with Hysteresis Control
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作者：Carlos I. Hoyos Velasco ; Fredy Edimer Hoyos Velasco ; John E. Candelo-Becerra 等
期刊名称：Computation
电子版ISSN：2079-3197
出版年度：2021
卷号：9
期号：10
页码：112
DOI：10.3390/computation9100112
语种：English
出版社：MDPI Publishing
摘要：This paper presents the mathematical modeling and experimental implementation of a Buck converter with hysteresis control. The system is described using a state-space model. Theoretical and simulation studies show that the zero hysteresis control leads to an equilibrium point with the implication of an infinite commutation frequency, while the use of a constant hysteresis band induces a limit cycle with a finite switching frequency. There exists a tradeoff between voltage output ripple and transistor switching frequency. An experimental prototype for the Buck power converter is built, and theoretical results are verified experimentally. In general terms, the Buck converter with the hysteresis control shows a robust control with respect to load variations, with undesired high switching frequency taking place for a very narrow hysteresis band, which is solved by tuning the hysteresis band properly.