Small-Scale Wind Power in Polar Off-Grid Systems

Martin HELMHART, Superwind - Germany

Transcript

1. Small-scale wind power in polar off-grid systems Dr. Martin Helmhart | superwind 24. April 2026 @ Antarctic Futures Symposium 2026
2. Outline 1. Company profile: 20+ years of pioneering work 2. Brief overview: Basics of wind energy 3. Challenges facing micro wind turbines 4. Technical resilience & hard facts 5. Hybrid energy systems 6. Case studies 7. Summary & key takeaways
3. About us: Over 20 years of pioneering work German engineering for the world’s most extreme locations Our DNA: Specialisation & Innovation Areas of application: Where standard solutions fall short Our promise: Install & Forget“ © Telenor Svalbard © Norwegian Polar Institute © Institut polaire français Paul-Émile Victor © Lyko © Tara Oceans Foundation © International Polar Foundation
4. 𝑃 = ! " ×𝑝 ×𝑣#×𝐴 𝑃 Available power (watts) 𝑝 Air density 𝑣! Wind speed to the power of three 𝐴 Rotor cross-sectional area The Physics of Wind – The 𝑣!-law Why wind speed is the most important factor
5. 𝑃 = ! " ×𝑝 ×𝒗𝟑×𝐴 Wind speed (𝒗) Relative performance (𝒗𝟑) Effect 4 m/s 4 x 4 x 4 = 64 Base return 5 m/s (only +25% wind) 5 x 5 x 5 = 125 ~ Double the power 8 m/s (doubling) 8 x 8 x 8 = 5012 8 times the power The Physics of Wind – The 𝑣!-law Why wind speed is the most important factor
6. The Physics of Wind– Das Flächengesetz Why the diameter matters 𝑃 = ! " ×𝑝 ×𝑣#×𝑨 Rotor diameter Area (𝑨) Effect 1 m 0,8 m² Base return 2 m (Doubling) 3,1 m² 4 times the power
7. Wind profile & roughness Why mast height and the surrounding environment determine success or failure Terrain type Friction Open sea / Ice Extremely low Open field Low Forest High © EOLOS © Lyko
8. Challenges facing small-scale wind turbines Turbulence (at low altitude) Disrupted airflow caused by obstacles on the ground leads to reduced yields Mechanical stress A high frequency of load cycles causes stress and premature material fatigue Corrosion & Abrasion Salt, sand and dust damage components and impair aerodynamics
9. Technical resilience Rotor blade pitch control
10. Technical resilience Rotor blade pitch control
11. Technical resilience Rotor blade pitch control
12. Technical resilience Adaptation to Arctic temperatures Use of cryogenic greases and ball bearings Advantage: • Functionality maintained down to temperatures of -45 °C Anti-ice coating (testing phase) Assumptions: • Higher energy prodution compared to untreated devices • Smoother and more even operation due to reduced ice buildup à less wear © energiewerkstatt
13. Material selection & construction Maximum service life under extreme conditions High-performance rotor blades • Material: CFRP (Carbon Fiber Reinforced Polymer) • Advantage: Extreme stiffness with minimal weight Chassis & Corrosion Protection • Housing: Seawater-resistant cast aluminium • Finish: Powder-coated & anodised • Bearings: Double-sealed, maintenance-free stainless steel • Pitch Mechanism: All moving parts made of A4 stainless steel
14. Charge control & black start capability Ensuring System Recovery at 0% Battery Charge Intelligent Power Management • Surge protection: Dump loads dissipate excess energy • Temperature compensation: Adjustment of the charging voltage to the ambient temperature Challenge: Deep Discharge • Problem: Standard systems often fail to reboot after a total battery collapse („System Crash“). • superwind Solution: Full Black Start Capability. Autonomous Recovery • Mechanism: The controller is designed to „wake up“ using only the minimal mechanical energy generated by initial rotor rotation. • Key Advantage: Completely autonomous battery recharge without requiring on-site technical intervention.
15. Principle of complementarity • Seasonal • Throughout the day Advantages of the hybrid design • Less strain on the battery • Redundancy • Greater resilience © SCC Broadband Hybrid energy systems (Wind + Sun) The perfect combination for 365 days of self-sufficiency
16. © SCC Broadband Principles: • Separate charge controllers ensure greater security of supply • Cascaded end-of-charge voltages • Excess energy is ‘dissipated’ via a load resistor Hybrid energy systems (Wind + Sun) The perfect combination for 365 days of self-sufficiency
17. Hybrid energy systems³ (Wind + Sun + fuel cell) Reliability through Triple Redundancy Hierarchical Power Management • Primary Sources (Priority 1): Wind & Solar • Complementary seasonal yields (Polar Night vs. Antarctic Summer) • Zero-emission, zero-fuel consumption • Backup System (Priority 2): Fuel Cells • Automatic activation during prolonged low-wind/low-light periods • Ensures uninterrupted power for critical sensors Why Fuel Cells over Diesel Generators? • Maintenance-Free: No moving parts, no oil changes, no mechanical wear • Reliability: Superior cold-start performance in polar temperatures • Efficiency: High energy density of fuel (methanol/hydrogen) with minimal waste Synergy Effect • Fuel Savings + Logistics © Lyko
18. Case study: LIDAR-buoys Floating LIDAR-system • Laser-based wind measurement (profile, speed, direction) for planned offshore wind farms Challenge • Saltwater resistance and mechanical stability in heavy swells. • Overflowing water • Extremely high wind speeds © EOLOS
19. © Blue Aspirations
20. Case Study: Mission @ 78° North NORSAR-station SPITS • Isolated station on Svalbard. Uninterrupted 24/7 monitoring of nuclear weapons tests and earthquakes. Part of the CTBO Challenges • Arctic storms • Low temperatures
21. Video source: Blue Aspirations © Norwegian Seismic Array (NORSAR)
22. Case Study: AWACA project in Antarctica IPEV stations : • Project uses autonomous platforms along an 1,100 km Antarctic transect to study snow formation and atmospheric water cycles for improved climate modeling Challenges • Arctic storms • Low temperatures © Institut polaire français Paul-Émile Victor, IPEV
23. Honest Analysis • Expert Tool: Industrial small-scale wind is a specialized solution • Wind Potential: Full performance requires adequate average wind speeds; site assessment is non-negotiable Physics-Based Decisions • Realistic Yields: Understanding physical principles (e.g., power curve) prevents poor investment decisions • Expectation Management: Aligning site data with turbine specifications for long-term success True Cost-Effectiveness • Beyond CAPEX: Real value is defined by minimized O&M (Operation & Maintenance) • Strategic Resilience: Durable technology is the only way to avoid cost- intensive service calls to remote/polar locations Summary & Key Takeaways Resilience as the Standard for Self-Sufficient Energy
24. Technical resilience • Durability: Uncompromising material selection (CFRP, A4 steel) • Survival: Mechanical pitch system for extreme wind loads Operational resilience • Autonomy: Full Black Start capability from 0% battery charge. • Reliability: Autonomous restart without human intervention Service resilience : • Longevity: Designed for 20+ years of operational life • Maintainability: Forward-thinking construction ensures repairability Summary & Key Takeaways Resilience as the Standard for Self-Sufficient Energy
25. www.superwind.com power@superwind.com superwind FROM THE NORTH TO THE SOUTH © Institut polaire français Paul-Émile Victor, IPEV © Tara Oceans Foundation