Dynamic Stability Improvement of Grid Connected DFIG Using Enhanced Field Oriented Control Technique for High Voltage Ride Through

Figure 7

(a) Grid voltage at (i) 1.3 times the rated fault, (ii) 1.62 times the voltage rise, and (iii) 2 times the voltage rise. (b) -axis stator and rotor flux at (i) 1.3 times the rated fault, (ii) 1.62 times the voltage rise, and (iii) 2 times the voltage rise. (c) EM torque and speed at (i) 1.3 times the rated fault, (ii) 1.62 times the voltage rise, and (iii) 2 times the voltage rise. (d) -axis stator and rotor current at (i) 1.3 times the rated fault, (ii) 1.62 times the voltage rise, and (iii) 2 times the voltage rise. (e) Stator and rotor current at (i) 1.3 times the rated fault, (ii) 1.62 times the voltage rise, and (iii) 2 times the voltage rise. (f) -axis stator flux graph at (i) 1.3 times the rated fault, (ii) 1.62 times the voltage rise, and (iii) 2 times the voltage rise. (g) -axis rotor flux graph at (i) 1.3 times the rated fault, (ii) 1.62 times the voltage rise, and (iii) 2 times the voltage rise.

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(b)

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