Synergistic Effect of Temperature and Operating Voltage on Deep Charging of PEEK in the Space Solar Power Station

When the space solar power station (SSPS) operates in its geostationary orbit (GEO), deep dielectric charging may occur due to the implantation of the space electrons into the dielectrics and destroy the electronic devices. In this work, during the high-energy electron storms event, the deep dielectric charging characteristics of the poly-ether-ether-ketoneflat plate have been studied by the Geant4 simulation as a function of temperature. It is found that the maximum electric field strength decreases when the temperature of the space environment increases, which is due to the increasing dark conductivity. When the front plate of the poly-ether-ether-ketone is biased at 10000 V and the back plate is grounded, the electrostatic discharge is the most likely to occur, while the case of 10000 V on the front plate with the back plate suspended (ungrounded) is the safest. It is well analyzed through the influence of the initial electric field generated by the bias voltage on the electric field induced by the electron deposition.