Qingdao Anhua New Energy Development Co., Ltd

Products

	Wind Turbine

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Model Number

AH-20kw

Qingdao Anhua New Energy Development Co., Ltd is a leading company in wind energy development and application. Our general manager and general engineer Mr. Zhao Fushen, who enjoys the special subsidy from the State Council, is a senior expert in off-grid wind turbine design. With over thirty years experience in off-grid wind turbine research and application, Anhua is a producing and trading company dedicated to wind turbine research, design and produce.

We have an advanced expert consultant team in wind energy, and do well in wind turbine subsequence development and perfecting technology. Our main products are wind turbines ranged from 200w to 20kw. Wind turbine system is an ideal power supply for separate house, island, observatory, sentry, signal transformation station, communities and other places with good wind resource.

Features:

A patent tilt-up tower makes wind turbine installation and maintenance easier.

Directly drive permanent magnet generator which is made of strong magnet; Its overloading capacity can reach 2 times than rated.

Wind turbine can start-up with breeze, generate electricity at 4m/s, and operate well with low wind speed.

Blade is designed on base of wind tunnel testing and manufactured in a similar way with the structure and technology of airfoil, with high efficiency, solid and durable, a life span of 10-15 years;

Rotor and generator are connected with an universal connection to make sure wind turbines can operate smoothly and without vibration;

Simple but durable design, wind turbine does not need special maintenance.

There are two ways to limit the rotor speed automatically to protect wind generator: Yawing and electromagnetic braking.

Continuous DC charging;

Tilt-up tower makes it easy to install, rise and down wind turbine;

The design safety factor of Blade and hub structure strength is more than 8; Survival wind speed: 50m/s; Allow over rated rotate speed for 2-3 times.

Permanent magnet generator, Allow over rated rotate speed for 2-3 times. The max output power can reach to 1.3-1.5 times of rated power. Adopt the electromagnetic design to limit the max current and make sure the generator coil can not overload.

Generator withstanding voltage is more than 2500v, take Sweden SKF bearing and effective lubricate grease, and generator can run for 30000 hours without maintenance.

Hand handle can stop wind turbine manually when there is gale forecast.

Take shock absorption design, wind turbine runs smoothly and without shock.

When wind turbine is over rated power, it will take the following step to regulate.

The controlling system detects the output power of wind turbine at real time, and control the output power.

When output power P>20KW, controller will detect the power and give the order to put through the dc power of electric winch, winch will turn for 15 seconds to wind steel cable for about 0.4m, then the wind turbine will furl side and wind rotor will release wind power, output power will low down. If the output power is still over 20KW, the controller will repeat to conduct the above actions. When output power is under 20kw, it will stop furling. When wind turbine power is over 22kw, the controller will start dump load.

When there is an extremely wind condition, the wind turbine is running over power for a long time, the furling action will convert into a fully furling and force to start the hydro brake to stop wind turbine. Wind turbine will be in a gale protection. The wind turbine has to be unlocked manually after the high wind subsides. This is not a frequented action, as said before, in normal condition, wind turbine will regulate its output power through the first action, only when there is a extremely wind condition did the turbine start to brake. The first step furling is with a 60degree, and in this scope it will not start the brake.