Wind turbine retrofitting introduces composite brake pads, reducing weight by 40% and eliminating copper contamination.
2025-12-04
The wind power technology upgrade sector is achieving technological innovation by introducing composite-material brake pads.
The wind power technology upgrade sector is undergoing technological innovation by introducing composite-material brake pads. Traditional wind turbine braking systems typically rely on copper-based powder metallurgy materials, which offer high thermal conductivity and stable friction coefficients but suffer from drawbacks such as heavy weight, high copper resource consumption, and potential risks of copper contamination. Take, for example, the resin-based composite yaw brake pads developed by Hengshui Zhongcheng: by incorporating carbon fibers and ceramic particles, these brake pads not only maintain a stable friction coefficient (0.4–0.5) but also achieve a remarkable 40% weight reduction. This material uses a non-metallic formulation, eliminating the need for copper altogether at the source and thus preventing copper ions from spreading via brake dust and potentially contaminating soil and water bodies—a move that fully complies with environmental protection requirements.
From a technical perspective, composite brake pads—through optimized fiber distribution and tailored matrix resin formulations—have significantly enhanced their creep resistance, effectively addressing material failure issues under prolonged braking conditions. For instance, a 16 MW offshore wind turbine, by adopting a synergistic design that combines carbon-fiber-wrapped main beams with composite brake pads, has achieved a 30% reduction in blade weight and extended the service life of its braking system to over eight years, while also cutting operation and maintenance costs by approximately 25%. Moreover, the modular structure of these composite brake pads reduces the weight of each pad by 50% compared to conventional products, making them easier to replace during high-altitude operations and further improving the overall economic viability of wind power equipment throughout its entire lifecycle. Currently, this technology has been scaled up for application in both onshore and offshore wind farms, emerging as a key technological pathway for the green transformation of the wind power industry.
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