Modular Multi-Port Ultra-High Power Level Power Converter Integrated with Energy Storage for High Voltage Direct Current (HVDC) Transmission

Sen Song, Wei Li, Kai Ni, Hui Xu, Yihua Hu and Jikai Si
Additional contact information
Sen Song: Department of Electrical Engineering and Electronics, The University of Liverpool, Liverpool L69 3BX, UK
Wei Li: State Grid International Development Co., Ltd., Beijing 100031, China
Kai Ni: Department of Electrical Engineering and Electronics, The University of Liverpool, Liverpool L69 3BX, UK
Hui Xu: Department of Electrical Engineering and Electronics, The University of Liverpool, Liverpool L69 3BX, UK
Yihua Hu: Department of Electrical Engineering and Electronics, The University of Liverpool, Liverpool L69 3BX, UK
Jikai Si: School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454003, China

Energies, 2018, vol. 11, issue 10, 1-17

Abstract: To connect renewable energy sources (RESs) with a unity-grid, energy storage (ES) systems are essential to eliminate the weather fluctuation effect, and high voltage direct current (HVDC) transmission is preferred for large-scale RESs power plants due to the merits of low cost and high efficiency. This paper proposes a multi-port bidirectional DC/DC converter consisting of multiple modules that can integrate ES system and HVDC transmission. Thanks to the adoption of three-port converters as submodules (SMs), ES devices, for example, batteries, can be decentralized into SMs and controlled directly by the SMs. Additionally, SMs are connected in a scalable matrix topology, presenting the advantages of flexible power flows, high voltage step-up ratios and low voltage/current ratings of components to satisfy the requirements of HVDC transmission. Furthermore, the control flexibility and fault tolerance capability are increased due to the matrix topology. In this paper, the analysis of the novel modular multi-port converter is introduced, and its functions are verified by the simulation results in PSIM.

Keywords: DC/DC converter; multi-port; high voltage direct current (HVDC); high voltage gain; modular (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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