Design framework of a configurable electrical power system for lunar rover

The temperature swing over lunar terrain is harsh and it can fall to as low as 70K during lunar nights in the polar region[1], which has significant interest as a preferred landing site. Most of the lunar rover designs incorporate, radioisotope heater units (RHU) to maintain the temperature during the nights. A 50W electrical power system(EPS) design for a Lunar rover, which does not contain a radioisotope heater units, is presented. The design approach adopted, provides wide operational flexibility and enhances the survivability of the Rover, in the extreme environmental conditions and unpredictable terrains present over the moon. The design conserves the battery capacity for recovery from unfriendly terrains or for an extended power requirement by a scientific experimental payload. The design concept is verified in lab conditions, by making a functional verification model.