توليد الطاقة في الفضاء .. الالكترونيات

Power generation in space .. Electronics

Power generation in space

Various methods have been used to generate electrical energy in polar atmosphere stations where there are many lightning strikes, satellites and spacecraft.

A common source of power generation in a spacecraft is the method that uses solar cells. Silicon solar cells include a class C base containing antimony or another type of impurity, and an outer layer of class M. The photons generated from sunlight falling on the cell emit more pairs of electrons and holes that lead to the passage of an electric current in the external circuit (285). This in turn leads to the production of a voltage between its ends equal to 0.5 volts. The solar battery can charge the accumulator cells that supply devices that require a higher current, when the satellite is in dark areas.

The thermal generator is a development of thermocouples. In a class S material, the electrons move away from the heat source and thus a device can be made in which current is generated as soon as one of its surfaces is hot and the other cold (386). Heat is nothing but a product of the environment (solar product) with significant effectiveness. In a cooling device that works in the opposite way, the passage of electric current causes the temperature of the semiconductor junction to drop.

285 - Photovoltaic cell or solar cell.

286 - A thermoelectric generator for generating current from heat.