As we know that Sun is the great source of energy on the earth & we can’t even imagine the life of any living organisms on the earth .Energy can be produced in three modes 1.Induction(In which two bodies are not connected together but even there is requirement of medium ) 2. Conduction (In which bodies are in contact with each other & it also requires medium) 3.Radiation(In which there is no contact of bodies but energy transmitted in form of photons). Solar energy is radiant light & heat from the Sun that is harnessed using a range of ever-evolving technologies such as solar heating ,photovoltaic, solar thermal energy .It is an important source of renewable energy and its technologies are broadly characterized as either passive solar or active solar on how they capture and distribute solar energy or convert it into solar power. Wireless Power transmission (WPT) is a useful and convenient technology that can be employed to collect solar energy and concentrate on earth surface without the need for a wire connection called a solar power satellites (SPS). This paper provides an analysis of wireless power transfer with an assessment of its practical applicability in terms of power range and efficiency. In this paper, various technologies available so far for wireless transmission of electricity and the need for a Wireless Energy Transmission will be discussed to find its possibility in actual practices. Also, their advantages, disadvantages and economical consideration will also be presented. This paper concentrates mainly on (i) The most popular concept known as Tesla Theory, (ii) The microwave power transmission(MPT) called Solar power satellite, and (iii) The highly efficient fibre lasers for wireless power transmission. Many concepts, research papers, and patents are available on wireless transmission of electricity but the commercial technologies are yet to be materialized. This paper will also discuss the possible ways to get useful and practical results out of all researches carried out so far elsewhere. The output microwave power ranges from 50W to 200W at 2.45GHz. A coaxial cable is to connect the output of the microwave source to a coax-to-waveguide adapter. This adapter is connected to a waveguide ferrite circulator which protects the microwave source from reflected power. The circulator is connected to a tuning waveguide section to match the waveguide impedance to the antenna input impedance.
Wireless power transfer, Microwave Power transfer, Load balancing, Rectenna, solar Power satellites, Response time
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