采用五电平控制方案的2/3电平双有源桥式DC-DC变换器建模与分析

Chaochao Song, Yongheng Yang, A. Sangwongwanich, Yiwei Pan, F. Blaabjerg
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引用次数: 5

摘要

二-三(2/3)电平双有源桥(DAB) DC-DC变换器具有很高的潜力,成为中压DC (MVDC)系统的一种有前途的解决方案。本文基于2/3电平DAB变换器的开关特性,采用五电平控制方案,对其运行约束进行了全面分析,以保证其稳定可靠运行。此外,为了降低建模的复杂性,基于等效方法导出了统一的功率传输模型,并划分了五种工作模式,为可靠高效的控制提供了参考。仿真结果验证了操作约束的有效性和模型的准确性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Modeling and Analysis of 2/3-Level Dual-Active-Bridge DC-DC Converters with the Five-Level Control Scheme
Two-three (2/3)-level dual-active-bridge (DAB) DC-DC converters have high potential to become a promising solution for medium-voltage DC (MVDC) systems. In this paper, the operating constraints based on the switching characteristics of the 2/3-level DAB converters are analyzed comprehensively with a five-level control scheme, in order to ensure stable and reliable operation. Furthermore, to reduce the complexity of the modeling, a unified power-transfer model is derived based on an equivalent method, and five operating modes are divided, being the references for reliable and efficient control. Simulation results verify the effectiveness of the operating constraints and accuracy of the proposed model.
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