An Inductor Current Estimation Approach for DC/DC Converters Based on Bisection Method
An Inductor Current Estimation Approach for DC/DC Converters Based on Bisection Method
复制标题
基于二分法的DC/DC变换器电感电流估计方法
DOI：
10.1109/ecce44975.2020.9235419
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Yue Zhao
中科院分区：
文献类型：
--
作者：
Zhe Zhao;Fei Diao;Yuheng Wu;Nan Lin;Yue Zhao
DC/DC转换器向着更高的功率密度和效率方向发展，对电感提出了更高的要求。电感电流反过来又显著影响转换器的工作特性，因此需要准确估计。本文提出了一种新的考虑电感变化的基于二分法的电感电流估计方法。该方法可以适用于各种DC/DC转换器，包括广泛使用的降压和升压转换器等，与传统的恒电感估计方法相比，该方法可以更准确地估计电感电流波形和功率损耗。最后给出了采用铁氧体-铁芯电感的降压型变流器的实验结果，验证了该方法的有效性。
The trends toward higher power density and efficiency for the DC/DC converters has posed more strict requirements for inductors. The inductor current in turn affect the operating characteristics of the converters significantly and thus needs to be accurately estimated. In this paper, a new bisection-method-based inductor current estimation approach considering the variation of inductance is proposed. The proposed approach can be adapted and applied for various DC/DC converters, including the widely used buck and boost converters and etc. Comparing to the conventional estimation method using constant inductance, the proposed method can obtain more precise estimations of both the inductor current waveform and the power loss. Experimental results on a buck converter with a ferrite-core inductor are presented to validate the effectiveness of the proposed approach.