Loss analyses of multi-port power electronic transformers based on DSIM simulations

FAN Zhiqiang; ZHAO Zhengming; SHI Bochen; YU Zhujun; ZHENG Jialin

doi:10.16511/j.cnki.qhdxxb.2022.22.041

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Journal of Tsinghua University(Science and Technology) ›› 2023, Vol. 63 ›› Issue (1) : 94-103. DOI: 10.16511/j.cnki.qhdxxb.2022.22.041

ELECTRICAL ENGINEERING

Loss analyses of multi-port power electronic transformers based on DSIM simulations

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Abstract

Multi-port power electronic transformers (PET) are key parts of modern power grids, but their losses are difficult to model. DSIM simulations are useful for complex power electronic converters, especially PET simulations. This study analyzed the losses in a multi-port PET which showed the effectiveness of DSIM software for analyzing complex power electronic converter systems. This paper described the PET loss model which was then validated by simulations and experiments. The results show the optimum efficiency operating point of a single PET. When two PETs are available, one PET in operation is the most efficient for light loads and two PETs in operation are the most efficient for heavy loads. This loss model analysis provides a reference for optimizing the efficiency of PET operations.

Key words

power electronic transformer / loss analysis / power electronic simulations with DSIM / power grid

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FAN Zhiqiang, ZHAO Zhengming, SHI Bochen, YU Zhujun, ZHENG Jialin. Loss analyses of multi-port power electronic transformers based on DSIM simulations[J]. Journal of Tsinghua University(Science and Technology). 2023, 63(1): 94-103 https://doi.org/10.16511/j.cnki.qhdxxb.2022.22.041

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