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The paper presents quasi z-source inverter (QZSI) as an alternate converter system for single phase wind generator. The QZSI inheriting all the advantages of traditional ZSI replaces the conventional PWM inverter in the system with some of its additional utilities. A closed loop controller is developed which monitors wind generator output and adjusts the inverter shoot-through duty cycle employing...
As a promising renewable alternative, the wind power is one of the significant source of generation. Reactive power compensation in a low voltage distribution networks for integration of wind power to the grid is the main concern of this paper. This paper proposes a control scheme based on instantaneous pq theory for compensating the reactive power requirement of a three phase grid connected wind...
This paper presents the application of DC-DC converter for supplying DC load from the standalone wind turbine. Output obtained from the induction generator is not constant due to variation in the wind speed. To maintain the constant voltage at the output step up converter and sliding mode based step down converter is used.
This paper investigates the feasibility of using a topology with a squirrel-cage induction machine and a Vienna rectifier for a wind energy conversion system. Simulation results reveal that this configuration is advantageous with respect to energy efficiency and reliability compared to a traditional six-switch two-level inverter.
This paper discusses about the ride-through capability of a large induction-generator based wind park with different reactive power support solutions. Three different solutions have been compared and it has been shown that conventional switching of capacitors is able to help the wind park meet the Nordel gird code requirements on low voltage ride-through. The requirements on rating are shown to be...
This paper deals with reconfigurable control associated with switch failure fault tolerant converter topology for Wind Energy Conversion Systems (WECS). A typical WECS with Doubly Fed Induction Generator (DFIG) is concerned. A converter topology without any redundancy is studied. This fault tolerant topology becomes a ldquofive-legrdquo structure after switch failure detection and converter reconfiguration...
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