BUTCube - Electronic power system

cube-sat, mission demonstrator, satellite, 1U concept, electronic power system

The electronic power system unit is designed to provide power to the other units
of satellite and is also responsible for the batteries and charging them from the
solar panels.

The unit itself consists of two identical units that are able to operate
independently and fully replace the other unit in the event of its failure or
malfunction. Both blocks are mounted on a single printed circuit board. Their
communication and power outputs are connected to the other satellite units via
a 40-pin stack connector. Each unit can be powered by up to 6 solar cell modules
which charge a battery that falls under the power control unit. The unit is
capable of monitoring the battery temperature and possibly regulating this
temperature by heating the battery, for example for charging purposes when the
temperature is below 0°C and is unsafe to charge the battery.

The power supply unit also contains the blocks responsible for activating the
satellite after launch. These are logic gates that process the inputs from the
separation switches and the activation switch. The battery charging rate is
regulated according to battery temperature and environmental conditions.

The voltage from the battery is regulated to the individual supply rails and the
voltage and current of each power rail of each unit can be monitored and the
problematic rail disconnected from the output if necessary.

Produkt je fyzicky umístěn na Leteckém ústavu FSI. Výrobní podklady a zdrojové kódy jsou dostupné na odkaze níže. STRaDe Git: https://strade.fit.vutbr.cz/git/imalanik/BUTCube

• png BUTCube_logo.png 21 kB
• jpg EPS_Back.jpg 2 MB
• jpg EPS_Front.jpg 434 kB