TY - GEN
T1 - DC-line current ripple reduction of a parallel hybrid modular multilevel HVDC converter
AU - Qin, Jiangchao
AU - Saeedifard, Maryam
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/10/29
Y1 - 2014/10/29
N2 - Parallel hybrid modular multilevel converter (PH-MMC) is one of the potential converter topologies for highvoltage direct-current (HVDC) transmission systems. Due to the circuit topology of a PHMMC, the dc-bus voltage contains low-order harmonics and cannot be fully regulated at a constant dc voltage. This paper proposes a zero-sequence voltage injection (ZSVI)-based model predictive control (MPC) strategy to control the dc current/power flow and simultaneously minimize the dc-current ripple. The proposed strategy takes the advantage of a cost function minimization technique to determine and inject the optimal zero-sequence voltage components into the dc-bus voltage of a PHMMC system. Performance of the proposed strategy for a 21-level PHMMC-based HVDC station system is evaluated in the PSCAD/EMTDC software environment. The reported results demonstrate the proposed ZSVI-MPC strategy can regulate the dc current while reducing its ripple.
AB - Parallel hybrid modular multilevel converter (PH-MMC) is one of the potential converter topologies for highvoltage direct-current (HVDC) transmission systems. Due to the circuit topology of a PHMMC, the dc-bus voltage contains low-order harmonics and cannot be fully regulated at a constant dc voltage. This paper proposes a zero-sequence voltage injection (ZSVI)-based model predictive control (MPC) strategy to control the dc current/power flow and simultaneously minimize the dc-current ripple. The proposed strategy takes the advantage of a cost function minimization technique to determine and inject the optimal zero-sequence voltage components into the dc-bus voltage of a PHMMC system. Performance of the proposed strategy for a 21-level PHMMC-based HVDC station system is evaluated in the PSCAD/EMTDC software environment. The reported results demonstrate the proposed ZSVI-MPC strategy can regulate the dc current while reducing its ripple.
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U2 - 10.1109/PESGM.2014.6939346
DO - 10.1109/PESGM.2014.6939346
M3 - Conference contribution
AN - SCOPUS:84930995268
T3 - IEEE Power and Energy Society General Meeting
BT - 2014 IEEE PES General Meeting / Conference and Exposition
PB - IEEE Computer Society
T2 - 2014 IEEE Power and Energy Society General Meeting
Y2 - 27 July 2014 through 31 July 2014
ER -
