TY - JOUR
T1 - Dynamic analysis of a grid-connected marine-current power generation system connected to a distribution system
AU - Wang, Li
AU - Liu, Jian Hong
N1 - Funding Information:
Manuscript received June 05, 2009; revised October 02, 2009. First published March 25, 2010; current version published October 20, 2010. This work was supported by the National Science Council of Taiwan under Grant NSC 97-2221-E-006-280, Grant NSC 98-2221-E-006-246, and Grant NSC 98-3114-E-110-005.. Paper no. TPWRS-00425-2009.
PY - 2010/11
Y1 - 2010/11
N2 - This paper presents dynamic-performance enhancement of a grid-connected marine-current power-generation system consisting of an induction generator (IG) driven by a marine-current turbine (MCT) through a gearbox. The studied 1.5-MW MCT-IG set is connected to an onshore 23-kV distribution system through an undersea cable, two onshore back-to-back power-electronics converters (PECs), and an onshore step-up transformer. The mathematical models of the studied marine-current power-generation system including marine-current speed, three-blade mechanical system, gearbox, IG, PECs, undersea cable, step-up transformer, etc. are established and combined together. The DC-link voltage between the two PECs and the generated active power of the IG are controlled by the PECs using the designed fuzzy logic controller (FLC). Time-domain simulations based on the developed nonlinear model of the studied marine-current power-generation system subject to various torque-disturbance conditions are performed. It can be concluded from the simulated results that the generated power of the studied marine-current power generation system can be effectively controlled to deliver to the grid by the proposed control scheme under the selected operating conditions.
AB - This paper presents dynamic-performance enhancement of a grid-connected marine-current power-generation system consisting of an induction generator (IG) driven by a marine-current turbine (MCT) through a gearbox. The studied 1.5-MW MCT-IG set is connected to an onshore 23-kV distribution system through an undersea cable, two onshore back-to-back power-electronics converters (PECs), and an onshore step-up transformer. The mathematical models of the studied marine-current power-generation system including marine-current speed, three-blade mechanical system, gearbox, IG, PECs, undersea cable, step-up transformer, etc. are established and combined together. The DC-link voltage between the two PECs and the generated active power of the IG are controlled by the PECs using the designed fuzzy logic controller (FLC). Time-domain simulations based on the developed nonlinear model of the studied marine-current power-generation system subject to various torque-disturbance conditions are performed. It can be concluded from the simulated results that the generated power of the studied marine-current power generation system can be effectively controlled to deliver to the grid by the proposed control scheme under the selected operating conditions.
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U2 - 10.1109/TPWRS.2010.2045400
DO - 10.1109/TPWRS.2010.2045400
M3 - Article
AN - SCOPUS:77958478303
SN - 0885-8950
VL - 25
SP - 1798
EP - 1805
JO - IEEE Transactions on Power Systems
JF - IEEE Transactions on Power Systems
IS - 4
M1 - 5438881
ER -