A Hybrid MMC Topology with dc Fault Ride-Through Capability for MTDC Transmission System

Table 4

Parameters of the hybrid MMC-HVDC simulation system.

Parameters	MMC1	MMC2	MMC3	MMC4
Rated capacity of MMC	400 MVA	300 MVA	100 MVA	100 MVA
ac bus voltage	220 kV	220 kV	110 kV	110 kV
dc bus voltage	±200 kV
Rated capacity of transformer	400 MVA	320 MVA	120 MVA	120 MVA
Ratio of transformer	220 kV/230 kV		110 kV/230 kV
Leakage reactance	0.1 pu
Bridge arm reactance	32 mH	55 mH	165 mH	165 mH
HBSMs’ number	12
SDSMs’ number	4
MCSMs’ number	1
SM capacitance	3400 µF	2550 µF	850 µF	850 µF