Fault Current Limiting Technology for PMSG Based Wind Turbine with DC Microgrid

Permanent magnet synchronous generator (PMSG) wind turbine widely use with dc micro grid having large number of advantages with dc bus system. When fault is takes place in the system more energy is reflected to PMSG and its affect on the moving part of PMSG causes over speed and mechanical stress on the rotor. Also heavy current will flow the generator side converter. In this paper use super conducting fault current limiter (SFCL) is use to minimize the fault current and improve capability of PMSG wind turbine with dc microgrid in faulty condition. Where entire system is simulated by using MATLAB software and developed the PMSG, converter AC/DC, SFCL and DC bus. First study the operation of the SFCL to increases the DC output of the converter. Then detailed result are obtained with and without SFCL is consider for study the impact of SFCL on the speed, torque, and output power of PMSG. Obtained result make sure that SFCL is suitable to minimize the fault current. In addition acceptable current limiting resistance value is also establish to obtain the successfully operation of PMSG.