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Abstract
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The use of DFIG-DC systems without stator voltage and current sensors has gained
attention due to reduced costs and simplified control. However, diode rectifiers in these
systems introduce current harmonics, degrading power quality and limiting performance
at higher power levels. This study proposes a new structure for DFIG-DC systems,
replacing the conventional two-level inverter with a T-type converter to address these
issues.The proposed system uses a T-type converter to enhance voltage levels, reducing
current harmonics and improving power quality. It also eliminates stator voltage and
current sensors, simplifying the control system and reducing costs. Performance analysis
through MATLAB/Simulink simulations demonstrated the effectiveness of the proposed
system compared to conventional methods.The proposed DFIG-DC system with a T-type
converter offers a cost-effective and efficient solution for reducing current harmonics and
improving power quality. Its simplified control system and enhanced performance make
it a promising approach for high-power applications in wind energy systems and other
industrial uses. These findings highlight the system’s potential for improving reliability
and operational efficiency in renewable energy and industrial applications.
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