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Turbine Technology: Harnessing Low Wind Sites

Turbine Technology: Harnessing Low Wind Sites. - Ravindra Utgikar, Head Corporate Marketing 12 th Mar 2012 , Chennai Trade Centre. Outline. Turbine Technology: Harnessing Low Wind Sites. Growth Challenges and te chnology. Low Wind Sites - Basics and An Indian Context.

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Turbine Technology: Harnessing Low Wind Sites

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  1. Turbine Technology: Harnessing Low Wind Sites - Ravindra Utgikar, Head Corporate Marketing 12th Mar 2012, Chennai Trade Centre.

  2. Outline Turbine Technology: Harnessing Low Wind Sites • Growth Challenges and technology • Low Wind Sites - Basics and An Indian Context • Customers Requirements • Harnessing Low Wind Sites - WTG Technology • Harnessing Low Wind Sites - Projects and OMS • Case Study: Harnessing Low Wind Sites- Suzlon S9X WTGs • Takeaways

  3. Growth Challenges Logistics • Transport restrictions on component sizes and weight • - Limitations on trailer sizes and ocean freight Infrastructure • Underdeveloped access roads to sites • Sites close to human settlements Grid Integration • Weak grids • Stringent grid compliance norms Cost of Energy: Grid Parity • Wind energy needs to be competitive with fossil fuels Supply Chain Management • Multiple bill of materials for different variants Role of Technology in Wind Industry Depleting High Quality Wind Sites • Fewer IEC class II sites • Sites with high turbulence and low air density Special Requirements • Extreme operating conditions • Noise/tonality requirements • Growth of wind Industry is contingent upon technological breakthroughs

  4. Low Wind Site: Basics Basic Equation of Wind Power • Wind Power is derived from the kinetic energy of the wind by obstructing its path with wind turbines. Once wind hits a wind turbine blade it results in the following vital equation P = Power output V = Wind speed A = Swept area ρ = Air density Cp = Power Coefficient P = ½* ρ * v3* A* Cp Power = 1/2 x Swept Area x Air Density x Velocity3 • Increases with the cube of the wind speed Power in wind energy • Increases linearly with air density • Increases with the square of the rotor diameter • Power from wind energy reduces exponentially as wind speed drops

  5. Low Wind Sites : Qualification Low Wind Sites • Low wind sites have 40% – 60 % less energy potential compared to high wind sites Source: International Electrotechnical Commission (IEC)

  6. Low Wind Sites: Pros and Cons • Challenges posed by low wind sites can be overcome by better turbine design and efficient Project & OMS

  7. Low Wind Sites – Indian Context • Wind Power Potential in India • Low Wind Sites • Low wind site energy potential in India is more than 3 times the current installed capacity Source: Center of Wind Energy Technology (C-WET)

  8. Customer Expectations • Financiability • Financing at attractive terms • Long term PPA with indexation • Wind Turbine • PC guarantee • Key component design • International certified WTGs Client • Project • Turn key/EPC capabilities • Time delivery of projects • World class practices • Statutory compliance • EIA • Grid • HSE • OMS • Turbine availability • Spare management • Skilled resources • Others • Comprehensive documentation

  9. Harnessing Low Wind Sites: WTG Technology#1 Higher Tower Hybrid Towers Sturdier and reduce the amount of concrete Concrete Towers Longer life and less resource-intensive to produce Lattice Towers Cumbersome process and longer time to erect tower Tubular Steel Towers Completely erected in 1 day Innovations in Tower technology facilitate higher hub heights as a result enhance energy captured in low wind sites

  10. Harnessing Low Wind Sites: WTG Technology #2 Innovations in Blades Material Fibers are extremely stiff and strong and can have a very low density Design Technology continuously reducing the net weight and increasing the blade’s efficiency Innovations make blades lighter, easier to transport and maintain, and help achieve bigger rotor diameter thereby harnessing more power from the low wind sites

  11. Harnessing Low Wind Sites: WTG Technology #3 Innovations in Generator • Advanced generator technology moving from induction to DFIG to PMG solution to maximize power capture

  12. Harnessing Low Wind Sites: WTG Technology#4 Innovations in Gearbox Evolution in Gearbox Technology Evolution of Gearbox Design Advancements in gearbox technology and design have improved turbine reliability to reduce downtimes and improve turbine availability

  13. Harnessing Low Wind Sites:Summary Product and Technology Trends New technology concepts & materials are explored to design WTGs suited for low wind sites.

  14. Harnessing Low Wind Sites:Projects and Services: Insights from Allied Industries Automobile : Short cycle times, Standardizationof spares for cost efficient inventory management in multiple variants of the same product Aviation : Fail-safe design, Innovation in raw material usageto reduce weight as the Component Size Increases, maximizing operational efficiency Construction : Rigorous compliance with EHS Practices, using pre-fabricated material for assembly at site to address logistic challenges Service / IT: Process automation, Agile NPD process, harnessing & leveraging technology for maximizing up-time , optimizing HR • World class project & service practices from industries facilitate techno-commercial feasibility & viability of low wind site projects

  15. Harnessing Low Wind Sites:Summary Projects and Services Efficient Project & OMS not only optimize capital cost but also help minimize downtime , improve turbine availability and thereby financial viability.

  16. Case Study : Harnessing Low Wind Sites (1/3): S9X Suite of WTGs for Low Wind Sites

  17. Case Study : Harnessing Low Wind Sites (2/3): S9X Suite of WTGs for Low Wind Sites Larger Rotor Diameter Variable Tower Heights • Two new increased rotor sizes to capture more power from low winds • S95 for Class II A sites • S97 for Class IIIA sites • Variable tower heights of 80, 90, 100m • Low-cost optimization of power generation at low to medium wind speed • 15% reduction in tower weight from the earlier S88 towers 2008 DFIG Generator Technology Advanced Blade Design • DFIG operation improves RoI for the IPP customers through • Optimizing reactive power • Meeting latest grid requirements • S9X Suite built on highly successful S88 platform brings latest world class technology to India • S9x Blades bring Advanced Aerodynamic Efficiency • Improved Structural Design while reducing Weight

  18. Case Study : Harnessing Low Wind Sites (3/3): Fleet Availability Availability (%) • Suzlon’s worldwide fleet availability is consistently above 95% average requirement ensuring maximum energy extraction from wind sites Results reflect Suzlon’s commitment to its customers RoI Equipment installed in some of the most demanding regions in the world

  19. To put it all together……

  20. THANK YOU www.suzlon.com Wind farm in Weihai, China Total Capacity – 49 MW

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