Simulation and Analysis of Multilevel DC Transformer Using Different Dual-Active-Bridge DC- DC Converter Models

Qin, Yanhui; Wang, Kaike; Tan, Zhendong; Xia, Yunfeng; Chen, Ying; Song, Yankan

doi:10.1109/isgt-asia.2019.8881310

Cited by 5 publications

(3 citation statements)

References 8 publications

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“…For the DC-DC power electronics converter used in the ST structure the common phase shift control algorithm has been implemented [9,12,20,22]. For each of the HF transformers the three phase shifts are calculated (nine in total).…”

Section: Study Of the Dc-mv/dc-lv Power Stage Of St-the Isolated Mab Dc-dc Converter With Wye-delta Transformermentioning

confidence: 99%

“…As a result, the simulation can be performed for dozens of power electronics converters, taking into consideration a complex control algorithm and significantly decreasing the simulation time in comparison to the full switching model. The average model design technics are well known in the literature for single power electronic converters included in all ST power stages (AC/DC, DC/DC, DC/AC) [4,[10][11][12][13][14][15]. The simple ST average model has also been proposed in the literature, where the DC/DC dual-active bridge (DAB) converter has been replaced by controlled sources and AC/DC and DC/AC converters have been replaced by ideal transformer models [4,12].…”

Section: Introductionmentioning

confidence: 99%

“…The average model design technics are well known in the literature for single power electronic converters included in all ST power stages (AC/DC, DC/DC, DC/AC) [4,[10][11][12][13][14][15]. The simple ST average model has also been proposed in the literature, where the DC/DC dual-active bridge (DAB) converter has been replaced by controlled sources and AC/DC and DC/AC converters have been replaced by ideal transformer models [4,12]. That solution focuses mainly on the analysis of the DAB control algorithms, which is the most important part of the ST due to the included HF transformer.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Enhanced Average Model of the Smart Transformer with the Wye-Delta Connection of Dual Active Bridges

Milczarek

Michna

2020

Energies

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Nowadays, many power electronics converters (PECs) are connected to the distribution grid, increasing the energy quality requirements in point of common coupling (PCC). One of the promising solutions to improve the energy quality is a smart transformer (ST) characterised by additional benefits in relation to the classical transformer throughout the possibility to implement advanced functionalities in PCC. However, the ST contains a lot of power semiconductor switches, making a problem for simulation software and the computer hardware when the control algorithm and all the ST functionalities are investigated. Usually, the solver algorithms in simulation software are used to create many linear time-varying states spaces, which increases exponentially with the number of switches. Therefore, very important is a model averaging process of the selected advanced ST topology, which is the aim of the paper. The proposed ST average model is compared with full switching models of each ST power conversion stage. It allows for decreasing the simulation time a dozen times, enabling the control algorithm analysis with a full ST model. The proposed solution and results prove steady-state and dynamic behaviour of the average model and provide a comprehensive averaging process for a novel multiple active bridge direct current/direct current (DC/DC) converter inside the ST.

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Section: Study Of the Dc-mv/dc-lv Power Stage Of St-the Isolated Mab Dc-dc Converter With Wye-delta Transformermentioning

confidence: 99%