TY - GEN
T1 - Low Voltage Ride Through(LVRT) control strategy of grid-connected variable speed Wind Turbine Generator System
AU - Shin, Hojoon
AU - Jung, Hyun Sam
AU - Sul, Seung Ki
PY - 2011
Y1 - 2011
N2 - In this paper, a Low Voltage Ride Through (LVRT) control strategy for variable speed full scale Wind Turbine Generator System (WTGS) is proposed. Grid-connected wind power system should satisfy LVRT requirement when grid fault occur, and the variable speed full scale WTGS has advantage of satisfying LVRT compared with the fixed speed WTGS. The proposed LVRT control strategy satisfies not only LVRT requirement but also stabilizing a DC link voltage regardless of reduced DC link capacitance. During the grid faults, especially three phase to ground fault, the grid side converter cannot control the DC link voltage because it is impossible to control grid side power. In this situation, the DC link voltage can be controlled by the generator side inverter using the proposed DC link voltage control scheme. The proposed control scheme can keep the power balance between grid and generator side power in any case of grid fault condition for LVRT. The compliance to Grid Codes has been evaluated by computer simulations. Though the experimental results, it is verified that the proposed method has satisfied the LVRT requirements and DC link voltage control specification simultaneously.
AB - In this paper, a Low Voltage Ride Through (LVRT) control strategy for variable speed full scale Wind Turbine Generator System (WTGS) is proposed. Grid-connected wind power system should satisfy LVRT requirement when grid fault occur, and the variable speed full scale WTGS has advantage of satisfying LVRT compared with the fixed speed WTGS. The proposed LVRT control strategy satisfies not only LVRT requirement but also stabilizing a DC link voltage regardless of reduced DC link capacitance. During the grid faults, especially three phase to ground fault, the grid side converter cannot control the DC link voltage because it is impossible to control grid side power. In this situation, the DC link voltage can be controlled by the generator side inverter using the proposed DC link voltage control scheme. The proposed control scheme can keep the power balance between grid and generator side power in any case of grid fault condition for LVRT. The compliance to Grid Codes has been evaluated by computer simulations. Though the experimental results, it is verified that the proposed method has satisfied the LVRT requirements and DC link voltage control specification simultaneously.
KW - DC link voltage control
KW - LVRT (Low Voltage Ride Through)
KW - variable speed FSWTGS (Full Scale Wind Turbine Generating System)
UR - http://www.scopus.com/inward/record.url?scp=80052079077&partnerID=8YFLogxK
U2 - 10.1109/ICPE.2011.5944552
DO - 10.1109/ICPE.2011.5944552
M3 - Conference contribution
AN - SCOPUS:80052079077
SN - 9781612849560
T3 - 8th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2011-ECCE Asia
SP - 96
EP - 101
BT - 8th International Conference on Power Electronics - ECCE Asia
T2 - 8th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2011-ECCE Asia
Y2 - 30 May 2011 through 3 June 2011
ER -