Research Article

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

Table 1

The parameter variation before and during voltage swell.

Parameter under considerationNormal system (at steady state)Grid voltage
1.3 times’ rise
Grid voltage
1.62 times’ rise
Grid voltage
2 times’ rise

Grid voltage (V)270350437540

EMT (Nm)−200Surge −380
During fault −200
Surge −580
During fault −200
Surge −1000
During fault −200

Speed (rpm)2660During fault −2400During fault −2250During fault −2100

(, ) Wb(0.05, −0.75)Surge (0.15, −1)
During fault (0, −0.8)
Surge (0.4, −1.2)
During fault (0, −1.1)
Surge (0.6, −1.6)
During fault (0, −1.4)

(, ) Wb(0.51, −0.55)Surge (0.75, −0.92)
During fault (0.48, −0.9)
Surge (1, −1.05)
During fault (0.4, −1.02)
Surge (1.15, −1.5)
During fault (0.25, −1.4)

(, ) Amp(−40, −140)Surge (−80, −170)
During fault (0, −110)
Surge (−140, −200)
During fault (0, −100)
Surge (−210, −240)
During fault (0, −80)

(, ) Amp(130, 20)Surge (180, 90)
During fault (110, −5)
Surge (220, −120)
During fault (100, −1)
Surge (240, 145)
During fault (90, −2)

(, ) 3-phase Amps(110, 110)Surge (120, 120)
During fault (90, 100)
Surge (200, 150)
During fault (80, 90)
Surge (210, 210)
During fault (60, 70)