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Published: 23, March 2015
As human population are rapidly increase, the demand for energy resources and electricity supply are more and more high. There are two types of energy which is fossil-based energy and green energy .
Traditionally, fossil fuels like coal, natural gas and petroleum are mainly use to generate electric power. In year 2007, coal contributes the most share of world electricity generation which is approximate 42% and it is believed that its share will remain unchanged through year 2035 . As is known, fossil fuels are finite resources. The World Energy Forum has warned that fossil fuels will be exhausted in less than 10 decades . Besides, fossil fuels will caused major human health problems and negative impacts to our environment such as green house effect and pollution.
Therefore, the use of renewable and greener energy is now the main direction of many countries.
Green energy is energy power that is fundamentally environment friendly for example tidal power, wave power, solar power and wind power. Nowadays, wind energy is one of the most widely used green sources of energy . Wind energy is a very clean energy which does not discharge any C02 in the process of generating electricity. Total wind turbines which been installed around the world are generating 340 TWh per year, which is about 2% of total electricity usage . However, the performance of wind resource are varies with different location.
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Among all the green energy, solar energy is the most reliable source of clean, sustainable energy and it has the largest potential of any power source to solve the worldacirc;€™s energy problems . Around the world, there are about 1700 TW of solar power are available for photovoltaic (PV) which is the technology for solar electricity devices . Solar cell technology are being use to convert solar energy to electricity which is capable for normal application in home or vehicle.
Hybrid energy systems combine two or more energy conversion devices and overcome the limitation of each device. Hybrid systems offer higher efficiency and reliability compare to a single type of energy conversion device.
The efficiency and reliability of wind and solar energy in generating electricity are being question by many researches. The performance of wind power is varies at different location and seasons. When there is no wind blowing, no electricity is produced. Thus, wind power cannot be used as a reliable source of base load power.
Solar energyacirc;€™s largest limitation is its sporadic availability. Nightfall and clouds will interrupt the collection of solar energy. Thus, solar energy does not always provide the level of power enough to fulfil energy needs of cities.
In this project, a small scale hybrid power system is being design and the performance of this prototype will be evaluated. This hybrid power system combines solar energy and wind energy to generate electricity. Ideally, this hybrid power system will have better performance than a single type of energy conversion device.
Application and Scenarios
Hybrid power systems are being implemented in rural areas of Malaysia. Why hybrid system? Itacirc;€™s because rural areas like islands or mountain areas are far away from national grid and it need a very high cost to connect them. Besides, diesel generator engine may face higher failure and requires unscheduled site visits or permanent man power for servicing. Thus, hybrid systems are the better choice in generating electricity.
Objectives and Overall Project Description
To develop a functional prototype of a solar and wind hybrid power system and evaluate its performance.
Collect and analyze the data from both energy systems which is solar power system and wind power system.
Design a hybrid energy storage system that consists of SLA battery and utilize the electric current for DC application.
Structure of Thesis