TY - JOUR
T1 - Nonminimum phase compensation in VSC-HVDC systems for fast direct voltage control
AU - Campos-Gaona, David
AU - Peña-Alzola, Rafael
AU - Ordonez, Martin
PY - 2015/12/31
Y1 - 2015/12/31
N2 - Newly developed VSC-HVDC systems are reaching power levels of up to 1000 MW. At this power level, the nonminimum phase behavior of the VSC-HVDC systems' dc plant becomes a threat to the stability of the direct voltage for fast dc control-loop dynamics. This paper presents a novel compensation scheme, called RHP-zero shifting+damping, designed to deal with the nonminimum phase dynamics of the dc plant by adding additional compensation loops to the current controller of the VSC-HVDC system. The compensation scheme can work along with linear controllers and allows the closed-loop bandwidth of the direct voltage controller to be increased without affecting the direct voltage stability of high-power VSC-HVDC systems. As a result, the direct voltage variations are significantly reduced during power changes in the ac or dc network. The performance of the compensation scheme is evaluated through simulations and corroborated in a 1-kW experimental test bed.
AB - Newly developed VSC-HVDC systems are reaching power levels of up to 1000 MW. At this power level, the nonminimum phase behavior of the VSC-HVDC systems' dc plant becomes a threat to the stability of the direct voltage for fast dc control-loop dynamics. This paper presents a novel compensation scheme, called RHP-zero shifting+damping, designed to deal with the nonminimum phase dynamics of the dc plant by adding additional compensation loops to the current controller of the VSC-HVDC system. The compensation scheme can work along with linear controllers and allows the closed-loop bandwidth of the direct voltage controller to be increased without affecting the direct voltage stability of high-power VSC-HVDC systems. As a result, the direct voltage variations are significantly reduced during power changes in the ac or dc network. The performance of the compensation scheme is evaluated through simulations and corroborated in a 1-kW experimental test bed.
KW - direct voltage control
KW - HVDC transmission
KW - nonminimum phase
KW - VSC-HVDC systems
UR - http://www.scopus.com/inward/record.url?scp=84961830138&partnerID=8YFLogxK
UR - http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=61
U2 - 10.1109/TPWRD.2015.2436386
DO - 10.1109/TPWRD.2015.2436386
M3 - Article
AN - SCOPUS:84961830138
VL - 30
SP - 2535
EP - 2543
JO - IEEE Transactions on Power Delivery
JF - IEEE Transactions on Power Delivery
SN - 0885-8977
IS - 6
M1 - 7111331
ER -
