Impact of SMES Unit on DC-Link Voltage of DFIG during Various Types and Level of Faults

A. M. Shiddiq, Yunus and Makmur, Saini and Ahmed, Abu Siada and Mohammad, A. S. Masoum (2019) Impact of SMES Unit on DC-Link Voltage of DFIG during Various Types and Level of Faults. PRZEGLĄD ELEKTROTECHNICZNY, 8. pp. 121-126. ISSN 0033-2097

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Wind energy becomes a popular source for renewable energy based power plants since a recent decade ago. Within many types of wind turbine generator (WTG), Doubly Fed Induction Generator currently dominating the market niche by about 64% on all installed capacity all around the world in 2015. A DFIG consists of two converters that linked by a capacitor or so-called as DC link that works to allow the transfer energy from WTG to the grid and vice versa. These converters are very sensitive to any faults particularly when the DC link voltage reach beyond the safety margin, it may be ended with the disconnection of DFIG to avoid any damage on the DFIG's converters. This paper aims to investigate the impact of SMES Unit on DC link voltage of DFIG during various types and levels of faults. The study was conducted through a simulation program and shows that SMES Unit is very effective in reducing the voltage at DC link during grid swell events and slightly affecting the voltage overshoot during grid sag and short circuit events. For the last two cases, the SMES Unit control system is designed to work properly and optimally, therefore, impact of SMES rather insignificant due to the DC link voltages are within the safety margin, however, when DC particularly for the case where the DC link voltage tends to increase and potential to damage the switching parts of DFIG, the SMES Unit could significantly compensate the faults and maintain the voltage within the safety margin.

Item Type: Article
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Department of Mechanical Engineering > Teknik Konversi Energi
Depositing User: admin admin pnup
Date Deposited: 26 May 2020 20:45
Last Modified: 16 Jun 2020 06:00

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