Chapter 5
Hybridization of Wind With Solar Using Cuk and Sepic Converters
This chapter presents a hybrid model of solar and wind energy. This gives the hybridization of wind with solar using the CUK and SEPIC converters. In this model the solar PV panel source is connected to the CUK converter and correspondingly the wind turbine source is given to the SEPIC converter. Solar energy and wind energy are the two renewable energy sources most common in use. Hybridizing solar and wind power sources provide a realistic form of power generation. The chapter deals with the concept of how this hybridization of solar and wind is used to get maximum efficiency and complete utilization of renewable energy sources. Many hybrid wind and PV power systems with maximum power point tracking control have been proposed. They used a separate DC/DC buck and buck boost converter connected in fusion in the rectifier stage to perform the MPPT control for each of the renewable energy power sources. However the renewable energy resources are not available continuously or constantly, here, a hybrid wind and solar energy system with a converter topology is proposed which makes use of CUK and SEPIC converters in the design This system has lower operating cost and finds applications in remote area power generation. Depending on the availability of the energy sources this topology allows two sources to supply the load separately or simultaneously. 5.0 INTRODUCTION Renewable energy is energy that comes from resources which are continually replenished such as sunlight, wind, rain, tides, waves and geothermal heat. Renewable energy sources which are accounted for another 3% are growing very rapidly. The usage of wind power is increasing at an annual rate of 20%, with a worldwide installed capacity of 238,000 megawatts (MW) at the end of 2011, and is widely used in Europe, Asia, and the United States[Global Wind Report et.al 2013]. Photovoltaic has overcome wind as the fastest growing energy source[Global Wind Report et.al 2013]. 5.1 PHOTOVOLATIC CELL The ability of certain materials to convert sunlight to electricity was first discovered by Becquerel in 1839, when he discovered the photo galvanic effect. Space applications eventually led to improved production efficiencies, higher conversion efficiencies, higher reliability, and lower cost for photovoltaic (PV) cells. Conversion efficiencies at the turn of the millennium for large-scale PV modules are widely ranged. The term Photovoltaic is the conversion of light into electricity at the atomic level. Some materials exhibit a property known as the photoelectric effect that causes them to absorb photons of light and release electrons. When these free electrons are captured, an electric current result that can be used as electricity. The photoelectric effect was first noted by a French physicist, Edmund Bequerel, in 1839,who found that certain materials would produce small amounts of electric current when exposed to light. In 1905.Through the space programs, its reliability was established and the cost began to decline. In the 1970s, photovoltaic technology gained recognition as a source …show more content…
These photons contain different amounts of energy which has different wavelengths of the solar spectrum. The absorbed photons provide energy to generate electricity. Due to the absorbed sunlight by the semiconductor material, electrons randomly from the material's atoms. When the electrons leave their position, holes are formed. When many electrons move towards the front surface of the cell, the resulting difference of charge between the surfaces creates a voltage potential. The electricity flows when the two surfaces are connected through an external …show more content…
Hybrid systems are the right solution for a clean energy production. Hybridizing solar and wind power sources provide a realistic form of power generation. With the use of CUK and SEPIC converters hybrid wind and solar energy system topology is proposed. This topology allows the two sources to supply the load separately or simultaneously depending on the availability of the energy sources. The output voltage obtained from the hybrid system is the sum of the inputs of the CUK and SEPIC converters. This system has lower operating cost and finds applications in remote area power generation, constant speed and variable speed energy conversion systems. MATLAB/SIMULINK software is used to model the DC-DC converters, inverter and the proposed hybrid
Hybridization of Wind With Solar Using Cuk and Sepic Converters
This chapter presents a hybrid model of solar and wind energy. This gives the hybridization of wind with solar using the CUK and SEPIC converters. In this model the solar PV panel source is connected to the CUK converter and correspondingly the wind turbine source is given to the SEPIC converter. Solar energy and wind energy are the two renewable energy sources most common in use. Hybridizing solar and wind power sources provide a realistic form of power generation. The chapter deals with the concept of how this hybridization of solar and wind is used to get maximum efficiency and complete utilization of renewable energy sources. Many hybrid wind and PV power systems with maximum power point tracking control have been proposed. They used a separate DC/DC buck and buck boost converter connected in fusion in the rectifier stage to perform the MPPT control for each of the renewable energy power sources. However the renewable energy resources are not available continuously or constantly, here, a hybrid wind and solar energy system with a converter topology is proposed which makes use of CUK and SEPIC converters in the design This system has lower operating cost and finds applications in remote area power generation. Depending on the availability of the energy sources this topology allows two sources to supply the load separately or simultaneously. 5.0 INTRODUCTION Renewable energy is energy that comes from resources which are continually replenished such as sunlight, wind, rain, tides, waves and geothermal heat. Renewable energy sources which are accounted for another 3% are growing very rapidly. The usage of wind power is increasing at an annual rate of 20%, with a worldwide installed capacity of 238,000 megawatts (MW) at the end of 2011, and is widely used in Europe, Asia, and the United States[Global Wind Report et.al 2013]. Photovoltaic has overcome wind as the fastest growing energy source[Global Wind Report et.al 2013]. 5.1 PHOTOVOLATIC CELL The ability of certain materials to convert sunlight to electricity was first discovered by Becquerel in 1839, when he discovered the photo galvanic effect. Space applications eventually led to improved production efficiencies, higher conversion efficiencies, higher reliability, and lower cost for photovoltaic (PV) cells. Conversion efficiencies at the turn of the millennium for large-scale PV modules are widely ranged. The term Photovoltaic is the conversion of light into electricity at the atomic level. Some materials exhibit a property known as the photoelectric effect that causes them to absorb photons of light and release electrons. When these free electrons are captured, an electric current result that can be used as electricity. The photoelectric effect was first noted by a French physicist, Edmund Bequerel, in 1839,who found that certain materials would produce small amounts of electric current when exposed to light. In 1905.Through the space programs, its reliability was established and the cost began to decline. In the 1970s, photovoltaic technology gained recognition as a source …show more content…
These photons contain different amounts of energy which has different wavelengths of the solar spectrum. The absorbed photons provide energy to generate electricity. Due to the absorbed sunlight by the semiconductor material, electrons randomly from the material's atoms. When the electrons leave their position, holes are formed. When many electrons move towards the front surface of the cell, the resulting difference of charge between the surfaces creates a voltage potential. The electricity flows when the two surfaces are connected through an external …show more content…
Hybrid systems are the right solution for a clean energy production. Hybridizing solar and wind power sources provide a realistic form of power generation. With the use of CUK and SEPIC converters hybrid wind and solar energy system topology is proposed. This topology allows the two sources to supply the load separately or simultaneously depending on the availability of the energy sources. The output voltage obtained from the hybrid system is the sum of the inputs of the CUK and SEPIC converters. This system has lower operating cost and finds applications in remote area power generation, constant speed and variable speed energy conversion systems. MATLAB/SIMULINK software is used to model the DC-DC converters, inverter and the proposed hybrid