D4200-155

D4500-155

Low Maintenance Costs

• Utilizes a direct-drive technology path, eliminating the need for regular replacement of gear oil, filters, and generator brushes, resulting in shorter maintenance time.

Low Engineering Costs

• Compared to 3.0MW units, it reduces the number of required installations by 34%, significantly lowering costs for land acquisition, roads, installation, and collection lines.

Superior Power Generation Performance

• Equipped with a large 155-meter rotor diameter and adjustable single-unit capacity of 4.2–4.5MW, achieving over 3500 annual operating hours at an average wind speed of 7.5 m/s.

• Over 60 years of experience in the R&D and manufacturing of large-scale power generation equipment, with generator efficiency 1%–3% higher than domestic competitors.

• High-efficiency blade design featuring advanced technologies such as serrated trailing edges and vortex generators, achieving a Cp value above 0.49.

• 1140V three-level technology provides higher generation efficiency and improved power quality, enhancing efficiency by 1%–1.5%.

High Safety and Reliability

• The direct-drive technology path has a shorter transmission chain and no high-speed rotating parts, enhancing reliability.

• No high-speed lubrication system or generator slip rings, reducing fire risk and improving safety.

• Dual-safety chain design with patented technology eliminates overspeed incidents, further enhancing safety.

• Proprietary control system with an average mean time between failures (MTBF) of over 2000 hours.

• Patented magnet protection technology prevents demagnetization and detachment, with zero downtime for high-power direct-drive generators.

• Voltage level raised to 1140V, improving the safety of the twist cable system.