Wind and Solar Energy Systems

Q.1. How the wind energy conversion systems are classified? [2]

Q.2. Enumerate some of the applications of solar PV systems. [2]

Q.3. Differentiate between stall control and pitch control in wind turbines. [2]

Q.4. What are the major power quality issues in renewable integration? [2]

Q.5. What are the main differences between fixed and variable speed wind turbines? [2]

Q.6. Explain the working principle of an induction generator in wind turbines. [2]

Q.7. What are the key characteristics of DFIG in wind power systems? [2]

Q.8. What are the differences between a PV module and PV array? [2]

Q.9. Why are power electronic converters necessary in solar systems? [2]

Q.10. How do solar PV systems behave during grid disturbances? [2]

Q.1. What is a solar pond and how is it used? [4]

Q.2. What are global experiences of renewable power system interconnection? Explain in detail. [4]

Q.3. Derive the Betz limit, emphasizing its significance in defining the maximum theoretical efficiency of a wind turbine. [4]

Q.4. Explain the V-I characteristics of a PV cell and extend this to modules and arrays. [4]

Q.5. Discuss the technical requirements of grid codes for renewable energy integration. [4]

Q.6. Explain the operating principles of Induction Generators and Doubly-Fed Induction Generators, including their characteristics and suitability for large-scale wind farms. [4]

Q.7. Explain the concept of the solar radiation spectrum and its relevance in solar energy conversion. [4]

Q.1. Describe different MPPT techniques and explain how converter control strategies help maximize efficiency in solar PV systems. [10]

Q.2. Explain the concept of fault ride-through in wind farms and its importance in maintaining grid stability. [10]

Q.3. Explain the elementary analysis of energy conversion in solar systems, highlighting the advantages and limitations of solar pond technology. [10]

Q.4. Compare Indian wind energy statistics with global figures and explain the challenges and opportunities faced by the sector. [10]

Q.5. Discuss how tip speed ratio affects efficiency and explain stall and pitch control methods used to optimize power extraction. [10]