Application Of Magnetic Coupled Resonant Contactless Electric Energy Transmission In Photovoltaic System

In recent years, with the process of energy saving and emission reduction accelerated, and the application of new energy growing, human’s need for the type of new energy and the way they are used also grows. Solar photovoltaic technology as one of the most promising new energy is widely noticed by human for its advantages. Statistics shows that China now is the biggest market for PV products and the largest producer. So we need to explore more ways to consume the PV products so that the development needs can be met in the future. That’s the starting point of this article, and we are trying to explore a new way to transmit electricity gathered by PV cells. That’s a combination of photovoltaic and wireless power transfer.Usually, power generated by PV cells is transferred through the metal wire to load, and it is efficient and has low power loss, and is used as the fundamental mode. But it is not convenient to set wire for transferring electricity in certain cases. It will make PV applications more convenient and flexible, if wireless power transfer can be applied together. This article will explore a way to combine PV cells with magnetically-coupled resonant wireless power transfer,(MCR-WPT). The MCR-WPT has quite advantages for its higher efficiency than the other methods of wireless power transfer, and simple structure and longer transmission distance. It can be asserted that the MCR-WPT is one of the most important directions of technology.The scheme of MPPT was determined at the first, then parameters of MCR-WPT was worked out, and the topology of class-E power amplifier was simulated in the simulation software ADS with parameters confirmed after the analytical calculation. According to the simulation result, a class-E power amplifier working at the frequency of 8MHz along with the signal generator and MCR-WPT transmitter(two resonance coils) was accomplished. Within that process the signal network matching problem was simulated and analyzed theoretically. The program of combining PV and MCR-WPT is basically achieved, after debugging the whole system.