Physics · Renewable Energy Systems

Why is a Wound Rotor Induction Generator (WRIG) preferred over a Squirrel Cage Induction Generator (SCIG) in modern wind turbines?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1WRIG does not require maintenance due to the complete absence of slip rings
2WRIG allows external rotor resistance control, enabling better efficiency and power factor control✓
3WRIG works strictly with constant-speed wind turbines, simplifying grid connection
4WRIG has no moving parts, making it far more durable than an SCIG

Correct answer

WRIG allows external rotor resistance control, enabling better efficiency and power factor control

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