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A SMALL WIND ENERGY SYSTEM TO SAVE HOME ELECTRICITY - rupinder - 10-04-2017 A SMALL WIND ENERGY SYSTEM TO SAVE HOME ELECTRICITY [attachment=18285] ABSTRACT Wind is the motion of air about the earth caused by its rotation and by the uneven heating of planet surface by the sun. The basic concept of the wind energy generation by using the wind flows to rotate a turbine generator. Even though, wind power is not popular in Malaysia but it is widely used in United Kingdom, United State and France. Nowadays, our electricity bill always increases every year cause of increasing fossil-fuel price. This project will discuss about small wind energy system to save our home electricity. We will use small wind turbine as alternative to reduce our electricity bill every months. This system will use UPS as battery storage, three blades small wind turbine and wiring. INTRODUCTION 1.1 Background of Study Wind power is the conversion of wind energy into more useful forms, such as electricity, using wind turbines. Most modern wind power is generated in the form of electricity by converting the rotation of turbine blades into electrical current by means of an electrical generator [3]. In windmills (a much older technology), wind energy is used to turn mechanical machinery to do physical work, such as crushing grain or pumping water. Wind power is used in large scale wind farms for national electrical grids as well as in small individual turbines for providing electricity to rural residences or gridisolated locations. Wind energy is plentiful, renewable, widely distributed, cleans, and reduces toxic atmospheric and greenhouse gas emissions if used to replace fossil-fuelderived electricity. The intermittency of wind seldom creates problems when using wind power at low to moderate penetration levels. Wind Energy The wind energy is converted through friction into diffuse heat throughout the Earth's surface and the atmosphere. The origin of wind is complex. The Earth is unevenly heated by the sun resulting in the poles receiving less energy from the sun than the equator does. Also the dry land heats up (and cools down) more quickly than the seas do. The differential heating powers a global atmospheric convection system reaching from the Earth's surface to the stratosphere which acts as a virtual ceiling. There we have the main advantages and disadvantages of wind power on the surrounding environment, and the general reliability of wind turbines [7]. The disadvantages of wind energy; 1. The main disadvantage regarding wind power is down to the winds unreliability factor. In many areas, the winds strength is too low to support a wind turbine or wind farm, and this is where the use of solar power or geothermal power are great alternatives. 2. A wind turbine can only support a specific population. Wind turbines aren't like power stations, where you can just burn a bit more fuel to generate more energy when you need it. 3. Wind turbine construction can last over a year, be very expensive and costly to the surrounding nature environment during the build process. 4. The noise pollution from commercial wind turbines is on a par with a small jet engine. This is fine if you live a mile or so away, where you will hardly notice the noise, but what if you live within a few hundred meters of a turbine? This is a major disadvantage. 5. Vast protests and/or petitions usually confront any proposed wind farm site. People feel the countryside should be left in tact for everyone to enjoy it's beauty. 1.1.2 Wind System Basics All wind systems consist of a wind turbine, a tower, wiring, and the balance of system components: controllers, inverters, and/or batteries [2]. Home wind turbines consist of a rotor, a generator mounted on a frame, and (usually) a tail. Through the spinning blades, the rotor captures the kinetic energy of the wind and converts it into rotary motion to drive the generator. Rotors can have two or three blades, with three being more common. |