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Embed code for: E.T . Renewable project Research
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Group members: Katerina, Inez, Daisy class : 10F Date: 3.19.2017
Design and build a renewable energy system that can reach and sustain the highest possible voltage
First of all the product we want to build is use wind power to produce electricity.
Wind energy is a clean, well-stocked renewable energy that is different from another mineral that is existing in the world now such as coal, oil, natural gas, and etc.It will not decrease with its on transformation and utilization .So it is a inexhaustible energy.
China's wind energy resources is rich, can develop and use of wind energy reserves of about 1 billion kW, of which the wind energy reserves of about 253 million kW (land 10m height data), the sea can develop and use wind energy reserves of about 750 million kW, A total of 1 billion kW.
With the development of the global economy, the wind energy market has developed rapidly. Since 2004, the global wind power capacity has doubled, from 2006 to 2007, the global wind power installed capacity expanded by 27%. There are 90,000 megawatts in 2007, this figure will increase to 16 million megawatts by 2010. The world wind energy market is expected to increase by 25% annually over the next 20 to 25 years. With the development of technological progress and environmental protection, wind power generation will be commercially competitive with coal-fired power generation.
Wind power is use of the wind energy to generate electricity and wind turbine is a machine to change the wind power to electrical energy .The wind wheel is a main component of the wind turbine system, composed of the blade and the hub. The blade has a good profile for motive power. It can make the wind wheel rotate by use the aerodynamic force and change the wind energy into mechanical energy then through the gearbox speed drive generator and change the mechanical into electrical energy.
Wind power has the following features:
Renewable, clean and non-pollution.
The wind speed changes at any time, the wind turbine subjected very bad alternating loads.
The instability of wind power will bring some impact to the power grid or load impact.
There are two main modes of operation of wind power generation ：one is an independent power supply system ,another used regular power grid .
Simple independent operation of the wind power system structure.
The specific operating conditions are:1) Wind power make the wind wheel rotate.
The wind turbine sets the speed of the output shaft through the connected gearbox, which is connected to the generator.
Spiale drive single-phase alternator rotate and it began to a generate electricity
The main components of the wind turbine Horizontal axis wind turbine is mainly composed of mind wind wheel, tower, wind turbine and gear box
Wind wheel: It consists of 1~3blades, which is the main component of wind energy absorption.
Tower：In order to allow the wind wheel work in a higher wind speed, the tower needs to support wind wheel. At this time the tower needs to bear two main loads: one is the gravity of the wind turbine, press down the power on the tower; the other is the prevent the tower bending to the downstream direction of wind.
10F Katerina Inez Daisy