Design And Analysis Of Mutual Inductance Based Wireless Power Transfer (WPT) System Suitable For Powering Solar Power Satellite (SPS)

Abstract

Advancements in technology during the last two decades have given birth to a new field of harvesting solar power available in abundance in space through Solar Power Satellite (SPS) to overcome the problems of generating and distributing power on the earth’s surface causing damage and degradation to environment. The major problem still lies in the fact that the SPS needs power for their internal operations and functioning. Hence secondary SPS needs to be placed along with the primary SPS for feeing power to the main SPS. In order to enhance the level of received power to its maximum, the secondary satellites have been placed at the vertices of a triangle with the primary SPS at the in-center of the triangle. In the present communication a mutual inductance based power transfer scheme has been proposed with a power range of 480 – 1920 Watts with an efficiency of more than 75%. Circular coils as transmitter and receiver coils have been considered for the design and standard mathematical expressions provided by F. W. Grover are used for analytical analysis of the system. The performance of the system has been evaluated through simulation method as well in MATLAB environment. Wide power range, high directivity, high efficiency, higher power concentrations are some of the advantages offered by the constellation of four satellite system as proposed. Practical implementation of the hardware can be done as per the design issues mentioned in this paper and can be verified with the actual results obtained through measurement