Matrix Converter Case Study
1.6.5 MATRIX CONVERTER(Fig. 1.6.5) A matrix converter is a direct power-conversion topology that can convert energy from an AC source to an AC load without the need for bulky and limited-lifetime energy storage elements in the dc link.Matrix-converter topologies can be divided into two types: direct matrix converters (MCs) and indirect matrix converters(2MCs). Even though this topology has some disadvantages, such as limited voltage transfer ratio (0.86)and a high number of power semiconductor device requirements,the matrix converter has received extensive research attention due to its significant advantages: adjustable input power factor, regeneration capability, and high-quality input current waveforms.This topology has the advantage that generated voltage of PMSG is converted into desired AC output voltage without theneed of any intermediate AC to DC conversion stage. In [Alejandro Garces, Marta Molinas et.al Jan. 2012]the output of PMSG is converted by a Reduced Matrix Converter (RMC), placed in the nacelle of each turbine, into ahigh frequency single phase AC voltage. A high frequencytransformer of reduced weight and size is used for insulationpurposes. …show more content…
Through matrixconverter, the terminal voltage and frequency of the induction generator can be controlled in such a way that the wind turbine is operating at its maximum power point for all wind velocities. The power factor at the interface with the grid is also controlled by the matrixconverter to ensure purely active power injection into the grid for optimal utilization of the installed wind turbine capacity. Furthermore, the reactive power requirements of the induction generator are satisfied by the matrixconverter to avoid self-excitation
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