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Back-to-back five-level converters for wind energy conversion system with DC-bus imbalance minimization
Merahi, Farid; Berkouk, El Madjid - In: Renewable Energy 60 (2013) C, pp. 137-149
The use of multilevel converters has increased significantly owing to their advantages in high-voltage and high-power applications. Balancing of the DC capacitor in the neutral-point clamped (NPC) topology is a main concern in these converters. The DC voltage must be maintained at its reference...
Persistent link: https://www.econbiz.de/10010806881
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Robust fault tolerant control of DFIG wind energy systems with unknown inputs
Kamal, E.; Aitouche, A. - In: Renewable Energy 56 (2013) C, pp. 2-15
Doubly Fed Induction Generators (DFIG) to illustrate the effectiveness of the proposed method. …
Persistent link: https://www.econbiz.de/10010806275
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A multiobjective approach for reactive power planning in networks with wind power generation
Alonso, Monica; Amaris, Hortensia; Alvarez-Ortega, Carlos - In: Renewable Energy 37 (2012) 1, pp. 180-191
The increase in wind energy penetration is creating a wide range of technical problems in power networks. Reactive Power Planning is one of these crucial issues which entails all the necessary planning actions to improve the voltage profile as well as the voltage stability in power networks. On...
Persistent link: https://www.econbiz.de/10010806419
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Dynamic participation of doubly fed induction generator in automatic generation control
Bhatt, Praghnesh; Roy, Ranjit; Ghoshal, S.P. - In: Renewable Energy 36 (2011) 4, pp. 1203-1213
frequency. The paper analyzed the dynamic participation of doubly fed induction generator (DFIG) to system frequency responses …-line power deviation and DFIG parameters. …
Persistent link: https://www.econbiz.de/10010807205
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Comparative study on the performance of control systems for doubly fed induction generator (DFIG) wind turbines operating with power regulation
Fernandez, L.M.; Garcia, C.A.; Jurado, F. - In: Energy 33 (2008) 9, pp. 1438-1452
three control strategies for DFIG wind turbines. The study focuses on the regulation of the active and reactive power to a … control system 2. The control strategies are evaluated through simulations of DFIG wind turbines, under normal operating …
Persistent link: https://www.econbiz.de/10010808520
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Transient Response Improvement of Microgrids Exploiting the Inertia of a Doubly-Fed Induction Generator (DFIG)
Papadimitriou, Christina N.; Vovos, Nicholas A. - In: Energies 3 (2010) 6, pp. 1049-1066
Induction Generator (DFIG), if such a machine exists in the microgrid, in order to decrease the necessary storage devices and … DFIG controller differ. In the first case, the understudy microgrid includes a hybrid fuel cell system (FCS)-battery system … and a WT with a DFIGURE. The DFIG local controller in this case is also based in fuzzy logic and follows the classical …
Persistent link: https://www.econbiz.de/10010668138
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A survey of shaft voltage reduction strategies for induction generators in wind energy applications
Adabi, M. Ebrahim; Vahedi, Abolfazl - In: Renewable Energy 50 (2013) C, pp. 177-187
Common mode voltage generated by PWM inverters and the parasitic couplings of the machine structure in high frequencies create a model for the system which leads to an induced voltage on the shaft. Shaft voltage became a dominant side effect of power electronic converters since they are widely...
Persistent link: https://www.econbiz.de/10010805142
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Synchronization of DFIG output voltage to utility grid in wind power system
Abo-Khalil, Ahmed G. - In: Renewable Energy 44 (2012) C, pp. 193-198
This paper presents a new synchronization algorithm for grid connection of a doubly fed induction generator (DFIG) in a … variable speed wind generation system. Stator flux-oriented vector control for back-to-back PWM converters in the DFIG rotor … existing DFIG synchronization algorithms, the proposed method gives fast starting and can take only 2 cycles to be performed …
Persistent link: https://www.econbiz.de/10010805219
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New management structure of active and reactive power of a large wind farm based on multilevel converter
Merahi, Farid; Berkouk, El Madjid; Mekhilef, Saad - In: Renewable Energy 68 (2014) C, pp. 814-828
This paper proposes a system of supervision and operation of a new structure wherein a large wind farm is connected to an electrical grid. The farm is managed in such a manner that it can produce the power needed by the grid system. The supervision algorithm is used to distribute the active and...
Persistent link: https://www.econbiz.de/10011044091
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On-chip earthquake simulation model using potentials
Georgoudas, I.; Sirakoulis, G.; Scordilis, E.; Andreadis, I. - In: Natural Hazards 50 (2009) 3, pp. 519-537
model and its instrumentation. The CA model hardware implementation is based on Field Programmable Gate Array (FPGA) logic …
Persistent link: https://www.econbiz.de/10010996836