TY - JOUR
T1 - Novel control approach for a hybrid grid-forming HVDC offshore transmission system
AU - Tian, Shangen
AU - Campos-Gaona, David
AU - Lacerda, Vinícius A.
AU - Torres-Olguin, Raymundo E.
AU - Anaya-Lara, Olimpo
PY - 2020/4/3
Y1 - 2020/4/3
N2 - This article describes a hybrid topology of high-voltage direct current (HVDC) for offshore wind farms using a series connection of a voltage source converter (VSC) and six-pulse diode rectifier (6P-DR). In this topology, the offshore side VSC (OF-VSC) acts as a grid-forming converter to maintain the PCC (point of common coupling) voltage of offshore wind farms (WF) and frequency. In addition, the OF-VSC functions as an active power filter to suppress the 5th, 7th, 11th, and 13th order harmonic current components produced by the 6P-DR, making it almost sinusoidal. Due to the 6P-DR being used in the hybrid converter, this new configuration reduces the total cost of the converters and losses, while preserving the power flow to the onshore gird. Compared to the fully-rated converter and hybrid converter based on a 12-pulse diode rectifier, the power loss and cost are reduced, and in addition, the proposed hybrid converter does not require a phase shift transformer nor a high number of diodes. A 200MWin an HVDC transmission system using the hybrid configuration was simulated in PSCAD. The results show that the system operated correctly and the harmonic components were filtered.
AB - This article describes a hybrid topology of high-voltage direct current (HVDC) for offshore wind farms using a series connection of a voltage source converter (VSC) and six-pulse diode rectifier (6P-DR). In this topology, the offshore side VSC (OF-VSC) acts as a grid-forming converter to maintain the PCC (point of common coupling) voltage of offshore wind farms (WF) and frequency. In addition, the OF-VSC functions as an active power filter to suppress the 5th, 7th, 11th, and 13th order harmonic current components produced by the 6P-DR, making it almost sinusoidal. Due to the 6P-DR being used in the hybrid converter, this new configuration reduces the total cost of the converters and losses, while preserving the power flow to the onshore gird. Compared to the fully-rated converter and hybrid converter based on a 12-pulse diode rectifier, the power loss and cost are reduced, and in addition, the proposed hybrid converter does not require a phase shift transformer nor a high number of diodes. A 200MWin an HVDC transmission system using the hybrid configuration was simulated in PSCAD. The results show that the system operated correctly and the harmonic components were filtered.
KW - active power filter
KW - hybrid HVDC converter topology
KW - offshore wind energy
KW - synchronous reference frame
UR - http://www.scopus.com/inward/record.url?scp=85082749060&partnerID=8YFLogxK
U2 - 10.3390/en13071681
DO - 10.3390/en13071681
M3 - Article
AN - SCOPUS:85082749060
VL - 13
JO - Energies
JF - Energies
SN - 1996-1073
IS - 7
M1 - 1681
ER -