Which of these is not a Variable speed generator used in a wind power plant?
a. Permanent Magnet Synchronous generator
b. Double fed induction generator
c. Squirrel cage Induction generator
d. Wound rotor synchronous generator.
Answers
Double Fed Induction Generator
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Answer:
Wind energy is playing a critical role in the establishment of an environmentally sustainable low carbon economy. This chapter presents an overview of wind turbine generator technologies and compares their advantages and drawbacks used for wind energy utilization. Traditionally, DC machines, synchronous machines and squirrel-cage induction machines have been used for small scale power generation. For medium and large wind turbines (WTs), the doubly-fed induction generator (DFIG) is currently the dominant technology while permanent-magnet (PM), switched reluctance (SR) and high temperature superconducting (HTS) generators are all extensively researched and developed over the years. In this chapter, the topologies and features of these machines are discussed with special attention given to their practical considerations involved in the design, control and operation. It is hoped that this chapter provides quick reference guidelines for developing wind turbine generation systems.