Date of Award


Degree Type



Electrical and Computer Engineering

First Advisor

Simon, Dan

Subject Headings

Electric current converters, Lunar surface vehicles, Battery charger, Constant power, Control, Linear AC regulator, Rover, Stirling convertor


NASA Glenn Research Center is developing various circuits for a lunar concept rover powered by both a stirling convertor and lithium ion batteries. To begin, a survey of six analog, non-power factor correcting controllers was done for an Advanced Stirling Convertor (ASC) design one was selected to control the stirling convertor. Next, a constant power circuit and lithium ion battery charger was designed, built and tested based on simulation in PSpice. The constant power circuit enables the stirling convertor to maintain a constant power when additional power is required from the batteries