Tehnički vjesnik, Vol. 32 No. 5, 2025.
Izvorni znanstveni članak
https://doi.org/10.17559/TV-20250207002344
Design and Analysis of a Novel Non-isolated DC-DC MMC Architecture for HVDC Power Networks Interconnections
Abdurrahim Erat
orcid.org/0000-0003-2543-4019
; Electrical and Electronics Engineering Department, Gaziantep University, 27310 Gaziantep, Turkey
*
Ahmet Mete Vural
; Electrical and Electronics Engineering Department, Gaziantep University, 27310 Gaziantep, Turkey
* Dopisni autor.
Sažetak
High voltage direct current (HVDC) power structures provide various notable advantages over high voltage alternating current (HVAC) power grid structures, including superior efficiency, faraway and large-scale transmission power, flexibility, controllability, minimal operating costs with positive effects on the environment, interconnection of asynchronous power systems. As HVDC systems are implemented, the demand for advanced DC-DC converters to facilitate voltage-level adaptations in interconnected networks has grown. The DC-DC Modular Multi-level Converters (MMCs) are a tremendously practical and cost-effective converter architecture appealing for interconnecting HVDC power systems. This study presents a unique DC-DC MMC architecture that provides an excellent solution for integrating modern asynchronous HVDC networks and these modern HVDC power systems with existing HVAC power systems. The suggested innovative DC-DC MMC has numerous advantages, including lower volume, more appealing funding cost, and less SMs quantity. The transformerless approach significantly reduces the converter's volume, weight, price, and power loss. To precisely control the power transfer among power systems with varying or comparable voltage levels, this unique study presents a power transfer control system. The performance of the proposed system is validated through mathematical modelling, harmonic analysis, and simulations, demonstrating its capability to effectively interconnect HVDC power systems.
Ključne riječi
DC-DC MMC; DC-DC power conversion; HVDC; Interconnection of asynchronous power grids; MMC
Hrčak ID:
335084
URI
Datum izdavanja:
30.8.2025.
Posjeta: 312 *