Which of the following is true statement for fixed-speed system for wind power when compared to variable system?

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  1. Higher reliability
  2. Inexpensive gear box
  3. Higher rotor efficiency
  4. Low transient torque

Answer (Detailed Solution Below)

Option 1 : Higher reliability
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Advantages of fixed-speed speed over Variable system for wind power

  • The construction of fixed speed wind turbine is simple, robust, and reliable.
  • Cost of the electrical part is low.
  • The variable speed system is somewhat more complex than the fixed speed system.
  • No frequency conversion hence no current harmonics.
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