A GaN Based Four-Port Flying Capacitor Multilevel Converter
A GaN Based Four-Port Flying Capacitor Multilevel Converter
复制标题
一种基于GaN的四端口飞跨电容多电平转换器
DOI：
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
I. Batarseh
中科院分区：
文献类型：
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作者：
M. Elrais;I. Batarseh
本文采用飞跨电容多电平变换器（FCML）拓扑结构，研制了一种新颖的GaN基四端口多电平变换器。所提出的四端口转换器可用于各种应用中，例如与光伏（PV）、能量存储（ES）和电动汽车（EV）的AC电网集成。A 5. 7 kW原型，四个端口（三个DC端口和一个AC端口）通过三个4电平FCML转换路径（一个DC-AC路径和两个相同的DC-DC路径）连接DC-AC路径能够处理1.7 kW的功率，并包含用于DC-AC转换的展开器。DC-AC路径实现了98.2%的最大效率，电压和电流总谐波失真分别为0.78%和0.71%。另外两个DC-DC路径中的每一个都能够处理2kW的功率，并实现了99.43%的峰值效率。
In this paper, Flying Capacitor Multilevel converter (FCML) topology is used to develop a novel GaN-based four-port multilevel converter. The proposed four-port converter can be used in a variety of applications such as ACgrid integration with Photovoltaic (PV), Energy Storage (ES), and Electric Vehicle (EV). A 5. 7kW prototype with four ports (three DC ports and an AC port) connected through three 4-level FCML conversion paths (one DC-AC path and two identical DC-DC paths) The DC-AC path is capable of processing power of 1.7 kW and incorporates an unfolder for the DC-AC conversion. The DC-AC path has achieved a maximum efficiency of 98.2% with voltage and current Total Harmonic Distortion of 0.78% and 0.71%, respectively. Each of the other two DC-DC paths are capable of processing power of a 2kW and have achieved a peak efficiency of 99.43%.