D7000-186

Low Maintenance Costs

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

• Fewer components and lower failure rates result in shorter scheduled downtime and minimal energy loss.

• Fewer consumables required for maintenance, leading to lower maintenance costs.

• Electrical components (such as converters and transformers) are located at the tower base, making maintenance convenient.

• Inspection intervals extended to one year, reducing workload and further minimizing energy loss.

Low Engineering Costs

• Compared to 5–6MW units, this reduces the required number of units by 14%–29%, lowering engineering costs by 600–1200 RMB/kW.

Superior Power Generation Performance

• Features a large rotor diameter of 186 meters and a 7.0MW single-unit capacity, achieving over 3400 annual operating hours at an average wind speed of 7.5 m/s.

• Over 60 years of experience in the design and manufacturing of large power generation equipment, with generator efficiency 1%–3% higher than domestic counterparts.

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

• Proprietary control system perfectly matched to blades, maximizing energy capture while controlling loads.

• 1140V three-level technology delivers 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 transmission lubrication system or generator slip rings, reducing fire risk and improving safety.

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

• Proprietary control system with an average mean time between failures (MTBF) of over 3000 hours.

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

• Fully sealed structure to prevent salt spray corrosion, with forced internal convection and external air-to-air cooling for efficient heat dissipation.

• Active typhoon resistance strategy and backup power solution, capable of withstanding typhoon winds up to 77 m/s.

• Dual-circuit electrical system with multiple redundancies in control design, allowing independent operation of a single electrical circuit.