Dynamic analysis of a grid-connected marine-current power generation system connected to a distribution system

Li Wang, Jian Hong Liu

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number5438881
Pages (from-to)1798-1805
Number of pages8
JournalIEEE Transactions on Power Systems
Volume25
Issue number4
DOIs
Publication statusPublished - 2010 Nov 1

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Ocean currents
Dynamic analysis
Power generation
Asynchronous generators
Power electronics
Cables
Turbines
Fuzzy logic
Torque
Mathematical models
Controllers
Electric potential

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

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Dynamic analysis of a grid-connected marine-current power generation system connected to a distribution system. / Wang, Li; Liu, Jian Hong.

In: IEEE Transactions on Power Systems, Vol. 25, No. 4, 5438881, 01.11.2010, p. 1798-1805.

Research output: Contribution to journalArticle

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