1. SCF Supercritical generator
Hummer’s wind generator adopts SCF supercritical technology which won a gold award in the 37th Salon Eureka in Brussels. This technology significantly reduces generator’s weight and size down to 20% to 30% of the traditional one, and the production efficiency is 10% to 30% higher. This ensures that the generator functions perfectly in small wind condition.
2. SKF bearings Hummer wind turbine adopts two SKF (Svenska Kullager Fabriken) bearings which are produced by the largest bearing manufacturer in the world, with the perfect internal geometric structure, known for its life-time endurance and reliable quality. Ordinary bearings need to be changed every two or three years, while SKF bearings can greatly reduce the maintenance costs on this matter.
3. PLC integrated with Siemens module Hummer wind turbine’s controlling system adopts the smart touch-screen PLC (Programmable Logic Controller) which is integrated with Siemens controlling unit. The PLC will alarm and adjust the abnormal running status of the wind turbine automatically both timely and efficiently. Siemens module offers high reliability to our PLC and its customers worldwide can testify for that.
4. Low noise The design of the rotor blade of Hummer wind turbine absorbs the highlights of the small aircraft’s airfoil, which is compliance with the aerodynamic standards. It provides a more aesthetic look and a higher efficiency and reduces the noise production as much as possible.
5. Triple braking protection Hummer wind turbine generally adopts the yawing system and the electromagnetic braking system to regulate the rotation of the wind turbine. Besides, customer can order the hydraulic braking system as well as a third protection. It is easy and convenient to shut down the whole system both manually and automatically.
Specifications:
Rated power (W) 20000
Maximum output power (W) 28000
Battery bank voltage (VDC) 240
Cut-in wind speed (m/s) 3
Rated wind speed (m/s) 11.5
Working wind speed (m/s) 3-25
Survival wind speed (m/s) 50
Generator efficiency >0.87
Wind energy utilizing ratio (Cp) 0.4
Generator type Permanent Magnet Alternator
Generator weight (kg) 496
Blade material/quantity GRP/3
Blade diameter (m) Ф9.0
Overspeed control Yaw + Electromagnetic brake / Hydraulic brake
Shutting down method Manual + Automatic
