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This paper presents a quantitative analysis of the advantages of a grid connected doubly fed induction generator (DFIG) for wind energy conversion systems (WECS) over the other available variable speed WECS. The WEC system includes back-to-back connected PWM voltage source converters (VSC) in the rotor circuit of the DFIG. The control strategy implemented is - unity power factor operation of the machine...
The paper presents a control strategy for a wind energy conversion system (WECS) for an optimal extraction of power from the wind. The topology of the system consists of a permanent magnet synchronous generator (PMSG), a diode bridge rectifier, a hybrid dc-dc converter which lowers the dc voltage, a supercapacitor and an inverter. However, the grid side inverter is not subject to this paper research...
The appropriate control strategy of grid-side converter (GSC) under unbalanced grid fault is important for wind power generator's fault-ride-through (FRT) capacity. Based on the basic principles of voltage space vector control, this paper studied the mathematical model of GSC under unbalanced grid conditions, and developed one efficient separation method of positive and negative sequence components...
This paper focuses on normal operation control of permanent magnet synchronous wind power generator system. It presents the system model theory and the operation control strategy under all the detailed information, such as reference direction of variables. Then a simulation for the normal operation of PMSG system is carried out in PSCAD with the desired results obtained.
The rapid penetration of a large number of distributed generations poses new challenges for the safe and effective operation of the main grid. A better way to realize the emerging potential of distributed generation is to take a system approach which views generation and associated loads as a subsystem or a ldquomicro-gridrdquo. The DFIG with storage system is the main micro-source in this paper....
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