Search results for: “wind turbine turbines”
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Windy physics: how is power of a wind turbine calculated?
This data-file is an overview of wind power physics. Specifically, how is the power of a wind turbine calculated, in MW, as a function of wind speed, blade length, blade number, rotational speed (in RPM) and other efficiency factors (lambda). A large, modern offshore wind turbine will have 100m blades and surpass 10MW power outputs.
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Wind turbine generators: DFIGs or Rare Earth magnets?
Wind turbines can use doubly fed induction generators (DFIGs) or permanent magnet synchronous generators (PMSGs) based around Rare Earth metals. This data-file captures the trends in DFIGs vs PMSGs over time by tabulating 40 examples, as turbines have grown larger, and different wind turbine manufacturers have adopted different strategies.
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Offshore wind: installation vessels and time per turbine?
Wind turbine installation vessels are estimated to cost $100-500/kW in the breakdown of a typical offshore wind project’s capex. Total offshore construction time is around 10 days per turbine. Wind turbine installation vessel use averages around 5 days per turbine. Data from past projects are tabulated in this data-file.
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Companies mitigating radar interference of wind turbines?
Wind turbines create clutter and blind spots on radar systems, interfering with air traffic control, ocean monitoring and risks to national security and defence. These themes increasingly matter. Hence this data-file screens a dozen companies mitigating the radar interference of wind turbines, from large listed providers of next-gen radar systems, to start-ups developing nano-scale stealth…
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Wind turbine capacity factors: by country, by facility?
Wind turbine capacity factors average 26% globally. But they vary from c20% in non-windy countries to 45% in the windiest countries. And they also vary within countries, with a normal distribution and a standard deviation of 7-12%. This data-file maps capacity factors of wind power generation.
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Wind turbines: screen of resin and polymer specialists?
This data-file tabulates details for 20 companies that make epoxy- or polyurethane resins and adhesives, especially those that feed into the construction of wind turbines. We think there are 5 public companies ex-China with 5-35% exposure to this sub-segment of the wind industry.
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Wind turbine manufacturers: market share over time?
This data-file tracks wind turbine manufacturers, their market shares and their margins over time. By 2024, fifteen companies account for 95% of global wind turbine installations. This includes large Western incumbents, and a growing share for Chinese entrants, which now comprise over half of the total market, limiting sector-wide operating margins to c3%.
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Goldwind: frequency response from wind turbines?
Goldwind is one of the largest wind turbine manufacturers in the world, headquartered in Beijing, and shares are publicly listed. The wind industry is increasingly aiming to mimic the inertia and frequency responses of synchronous power generators. Goldwind has published some interesting case studies. Hence we have reviewed its patents to see if we can…
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Small-scale wind turbines: leading companies?
This screen compares the offerings of a dozen small-scale wind turbine providers, with power ratings below 30kW, for residential energy generation. Costs range from $1,000-6,000/kW. The three key challenges are performance, relaibility and cost.
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Offshore wind: levelized costs?
This model estimates the levelized cost of offshore wind at 13c/kWh, to generate a 7% IRR off of capex costs of $4,000/kW and a utilization factor of 40-45%. Each $400/kW on capex adds 1c/kWh and each 1% on WACC adds 1.3 c/kWh to offshore wind levelized costs.
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