ELECTRICAL MODELING AND SIMULATION OF A MEDIUM-SIZE SATELLITE

Titiloye Stephen Oyediran & Titiloye Yetunde Adebimpe

Department of Electrical Engineering

 Federal Polytechnic, Bida.

Email: titiloyeso2014@gmail.com

ABSTRACT

Aiming on the requirement of generating an accurate electrical model of a medium size satellite, the software created for this paper provides a complete simulation of a medium to bigger size satellites. This paper analyses the disadvantage in the vulnerability in the existing satellite to harsh environment condition like shadowing, radiation and extreme temperature variations in space. Solution is thereby offered through modeling and simulation of a medium-size satellite in a more realistic fashion. The methodology of the modeling includes system design and solidification of a generic solar array, distribution system, backup battery system, load analysis system and a complete thermal model for the battery and solar array. The software includes solar cell to solar array relations, bypass systems, imbalance in array wings, array power generation and shunting model, battery charge and discharge model and a load profile. The modeled satellite shows during tests that during daylight, the system runs effectively, charging the battery. Thence, excess power is calculated and shunted. And during darkness, the panels were able to provide power through the battery. All cell/array/battery features are therefore highly realistic and database modeled.

Keywords:- Satellite, Solar Array, Power Regulation, Back-up Battery, Electrical Model.