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==The Basics==
==The Basics==
Satellite power modules are widely known as '''electrical power systems, or EPS'''. If you are purchasing Cubesat components as a kit, the EPS will come as a self contained unit, with outputs for voltage bus distribution and battery connnections. The EPS can be broken down conceptually into four smaller blocks. They are the [[#Power Sources]], the [[#Energy Storage]], the [[#Power Distribution]], and the '''Power Regulation and Control''' modules.
Satellite power modules are widely known as '''electrical power systems, or EPS'''. If you are purchasing Cubesat components as a kit, the EPS will come as a self contained unit, with outputs for voltage bus distribution and battery connnections. The EPS can be broken down conceptually into four smaller blocks. They are the [[#Power Sources|power sources]], the [[#Energy Storage|energy storage]], the [[#Power Distribution|power distribution]], and the '''Power Regulation and Control''' modules.
For those interested in designing their own power system, a table of the design steps can be found below courtesy of Space Mission Analysis by Wiley Larson.
[[File:Design_Process_for_Power_Subsystems.png]]
==Power Sources==
==Power Sources==
Most satellites store their power through a set of primary and secondary batteries. One can find a table of industry standard batteries and their characteristics below.
Most satellites store their power through a set of primary and secondary batteries. One can find a table of industry standard batteries and their characteristics below.
[[File:Primary_battery_types.png]]
[[File:Secondary_battery_types.png]]
==Power Distribution==
==Power Distribution==
|Storage:
|Storage:
|-
|-
|
|Pumpkin battery pack
|Pumpkin battery pack
|40Wh
|40Wh
|Optical Payload:
|Optical Payload:
|-
|-
|
|Nasa's Lunar Cubesat
|Nasa's Lunar Cubesat
|10W
|10W
|-
|-
|
|MIT Free-Space
|MIT Free-Space
|15W
|15W
|-
|-
|Solar panel Production
|Solar panel Production
|-
|
|Nasa's Lunar Cubesat
|Nasa's Lunar Cubesat
|50W
|50W
|CubeSatShop 2.3W per 1U
|-
|
|CubeSatShop
|2.3W per 1U (translates to 48W for similar size of Lunar Cubesat)
|}
|}
==Resources to Learn More==
==Resources to Learn More==
MIT open courseware. Class on how to build a satellite. Very useful information http://ocw.mit.edu/courses/aeronautics-and-astronautics/16-851-satellite-engineering-fall-2003/index.htm
MIT open courseware. Class on how to build a satellite. [http://ocw.mit.edu/courses/aeronautics-and-astronautics/16-851-satellite-engineering-fall-2003/index.htm Very useful information]
[http://www.cubesatkit.com/docs/press/20120420_Pumpkin_CSDWSLO_2012-2.pdf Pumpkin talk on Power Systems]
[[Category: Satellites]]