1,212
edits
Changes
→Monitoring and Regulation
== Power Distribution Scenarios ==
Once battery and solar panels are selected, the different scenarios for distribution of power generated from solar panels to battery and different loads should be considered. The different cases that can arise are:
* '''Solar panel generating power and battery discharged:''' Power generated can be used to cater to the loads and charge battery by the remaining power.
* '''Solar panel not generating and battery is charged:''' Depending on the level of discharge the number of loads can be determined that are to be turned on.
== Monitoring and Regulation ==
Now the generated power should be taken to the different loads depending on their needs i.e. voltage requirements etc. Voltage and current regulators can be used to provide the required voltage and current by the load i.e. converting the high or low voltage or current to the levels required by the load. A suitable way is to use a voltage regulator and current limiter in series so that both voltage and current are in the controlled ranges. Different mechanisms to do this with high efficiencies are present that can be selected on priority basis:
Overall linear regulators are simple to use, low cost and less noisy as compared to switching regulators but switching regulators are more efficient and have a high voltage range of operation.<br \> <br \>
Next comes the task of monitoring and controlling the loads whether they are on or off as the status desired by the flight code.
=== Safe Mode ===
This mode is encountered when the battery voltage drops below the minimum required. All components are shut down. The satellite came out of this mode (in case of Pratham), when the battery voltage rose above 7 V. <br \>
----
If you are done reading this page, you can go back to [[Electrical Subsystem]]