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© P. Kundur

WTG -  3

Wind Turbine Generators (WTGs)

Wind turbine components:

wind turbine runs at low speed (0.5 Hz)

mechanical drive train includes a gear box

converts low speed of turbine to high speed of generator

Mechanical speed regulation:

blade pitch angle control

each blade rotated about longitudinal axis

variable speed

stall control

no pitch actuators required

fixed speed

Types of generators

induction generator

synchronous generator

doubly fed induction generator

WTG ratings range from 25 kW to 3 MW

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