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← TechnologyIn a wind turbine's rectifier circuit, which consequence results when a sudden grid voltage spike exceeds rated IGBT blocking voltage?
A)IGBT avalanche breakdown ensues✓
B)Harmonic distortion reduces slightly
C)Rotor speed regulation improves
D)Capacitor bank ESR decreases abruptly
💡 Explanation
IGBT breakdown leads to uncontrolled current flow. Insufficient voltage margin within the collector-emitter circuit induces the avalanche breakdown mechanism, because a large reverse voltage appears across the junctions; therefore the IGBT fails rather than regulating grid parameters.
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