FPGA‑based real‑time simulation of LCC‑HVDC systems with C‑NAM method

The real-time simulation of a line-commutated converter-high voltage direct current (LCC-HVDC) system based on a field programmable gate array (FPGA) is proposed to meet the increasingly complex dynamic characteristics and real-time simulation requirements of HVDCs. In addition, a real-time simulation platform based on a CPU + FPGA is established for simulation verification. First, a simulation model of the 12-pulse rectifier of an LCC-HVDC is established using the compact nodal analysis method (C-NAM). When compared with the traditional node analysis method, C-NAM reduces the number of multiplication executions in a single simulation step, and the degree of program serialization is signifi cantly reduced, which greatly improves the real-time simulation speed of a FPGA. Then, this simulation model is programmed in a FPGA, and the optimization algorithm further shortens the simulation step size. Finally, a 12-pulse LCC-HVDC is compared and verified with a 1 μs simulation step on a FPGA real-time simulation platform, and a simulation analysis verifies the accuracy of the model. This method can improve the simulation scale of an LCC-HVDC system, and enhance the versatility of the LCC-HVDC real-time simulator based on a FPGA.

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Cite this article

[IEEE Style]

R. Li, D. Li, Y. Gao, C. Gu, X. Sun, L. Fan, "FPGA‑based real‑time simulation of LCC‑HVDC systems with C‑NAM method," Journal of Power Electronics, vol. 23, no. 6, pp. 913-922, 2023. DOI: 10.1007/s43236-022-00586-9.

[ACM Style]

Ruolan Li, Danyong Li, Yang Gao, Chen Gu, Xiaoyi Sun, and Li Fan. 2023. FPGA‑based real‑time simulation of LCC‑HVDC systems with C‑NAM method. Journal of Power Electronics, 23, 6, (2023), 913-922. DOI: 10.1007/s43236-022-00586-9.