A Mathematical Model for Nickel Hydrogen Cell Behavior on Space Station Freedom Rockwell International

Format:

Conference/Event

Author/Creator:

Tajirian, Edmond K., author.

Conference Name:

27th Intersociety Energy Conversion Engineering Conference (1992) (1992-08-03 : San Diego, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1992

Summary:

Mathematical modeling of the Ni-H2 cell based on the fundamental electrochemical processes is necessary for accurately simulating the battery behavior on Space Station Freedom. Accurate predictions are incorporated as part of the development of the Space Station Electric Power System simulation. This simulation will be used to develop and test control algorithms which will maximize the available power in the most efficient way. This is a deviation from the approach used on smaller satellite power systems which are designed with substantial margin. Hence, the use of an empirical battery model is not feasible due to its low fidelity.This paper covers the electrochemical theory related to the Ni-H2 cells, and the analysis of experimental data used to develop relations between the cell state of charge and certain cell properties. Theoretical results are compared against well-documented experimental data. Excellent correlation is shown, with a worst-case voltage deviation of about 3% from the experimental data. The worst-case pressure deviation was less than 8%

Notes:

Vendor supplied data

Publisher Number:

929259

Access Restriction:

Restricted for use by site license