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Energies 2017, 10(8), 1139; https://doi.org/10.3390/en10081139

Passivity-Based Control of a Doubly Fed Induction Generator System under Unbalanced Grid Voltage Conditions

1
College of Energy and Electrical Engineering, Hohai University, Nanjing 211100, China
2
Department of Electrical & Computer Engineering, Iowa State University, Ames, IA 50011, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Frede Blaabjerg
Received: 23 May 2017 / Revised: 17 July 2017 / Accepted: 31 July 2017 / Published: 3 August 2017
(This article belongs to the Section Energy Sources)
Full-Text   |   PDF [1364 KB, uploaded 3 August 2017]   |  

Abstract

According to the theory of passivity-based control (PBC), this paper establishes a port-controlled Hamiltonian system with dissipation (PCHD) model for a doubly fed induction generator (DFIG) system under unbalanced grid voltage conditions and proposes a method of interconnection and damping assignment passivity-based control (IDA-PBC) of the system under such conditions. By using this method, the rotor-side converter and grid-side converter can be controlled simultaneously in order to improve fault ride-through capability of the DFIG system. Simulation results indicate that this IDA-PBC strategy effectively suppresses fluctuations of output current and power in the DFIG system during unbalanced grid voltage sag/swell, enhances dynamic performance, and improves the robustness of the system. View Full-Text
Keywords: doubly fed induction generator; grid voltage unbalance; fault ride-through; passivity-based control; port-controlled Hamiltonian system doubly fed induction generator; grid voltage unbalance; fault ride-through; passivity-based control; port-controlled Hamiltonian system
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Huang, J.; Wang, H.; Wang, C. Passivity-Based Control of a Doubly Fed Induction Generator System under Unbalanced Grid Voltage Conditions. Energies 2017, 10, 1139.

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