Parameters design evaluation in 3-level flying capacitor boost converter

2017 IEEE Symposium on Computer Applications & Industrial Electronics (ISCAIE) Pub Date : 2017-04-01 DOI:10.1109/ISCAIE.2017.8074976

A. Ponniran, Mohd Amirul Naim Kasiran

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引用次数: 11

Abstract

Flying capacitor boost converter (FCBC) is one of the possible power converter for high power applications such as solar systems and electric vehicles system and so on. The aim of this paper is to establish relationship between the capacitance of the flying capacitor and output voltage ripple. 3-level FCBC prototype has been constructed for parameters design confirmation. Experimental result shows that the input current ripple is within design value. By identifying the input current ripple, the inductance of the boost inductor is estimated and it needs approximately only 25% compared to the 2-level conventional boost converter. Besides, 3-level FCBC only requires inductor core volume of 35% compared to the 2-level conventional boost converter. Moreover, it is confirmed that the relationship between the capacitance of the flying capacitor and output voltage ripple is independent. This finding is concretely proven by the simulation and experimental results. Therefore, the boost inductor and capacitance of the flying capacitor can be designed independently without considering output voltage ripple.

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三电平飞容升压变换器参数设计评价

飞电容升压变换器(FCBC)是太阳能系统、电动汽车系统等大功率应用的一种可能的功率变换器。本文的目的是建立飞行电容的电容与输出电压纹波之间的关系。构建了三级FCBC样机，进行了参数设计确认。实验结果表明，输入电流纹波在设计值范围内。通过识别输入电流纹波，估计升压电感的电感，与传统的2级升压变换器相比，它只需要大约25%。此外，与传统的2级升压变换器相比，3级FCBC只需要35%的电感芯体积。此外，还证实了飞行电容的电容值与输出电压纹波之间的关系是独立的。仿真和实验结果验证了这一结论。因此，可以在不考虑输出电压纹波的情况下，独立设计升压电感和飞行电容。

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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2017 IEEE Symposium on Computer Applications & Industrial Electronics (ISCAIE)

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