New Structure of Wind-PV Farm with Improved Performance under Voltage and Frequency Fault Conditions
Subject Areas : electrical and computer engineeringMehrdad Tarafdar Hagh 1 , Farshid Najaty Mazgar 2 , 3
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Keywords: PVFIG wind turbineLVRTFrequency support,
Abstract :
In this paper a new structure for wind – PV farm is proposed. The PV arrays and DC loads are capable to connect to the proposed structure. In the proposed structure each DFIG wind turbine is connected to the AC grid through its stator windings and has a connection to a common DC link via its rotor side converters. The proposed structure uses a high power grid side converter and an energy storage system for entire wind – PV farm. The converter power loss decrease and lifetime increase of power switches are some advantages of the proposed structure under normal operation conditions. The proposed structure with the coordinated power control of DFIG wind turbines, the ESS and PV arrays improves the low voltage ride-through capability under-voltage fault conditions and enhances the frequency response of the wind farm under frequency faults. The proposed structure is simulated in MATLAB/ Simulink software and the results are presented. Furthermore, an experimental setup is provided to test the operation of the proposed structure.
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