The Spaceteq EOS1 is a high reliability direct energy transfer, unregulated bus power system. It is designed for spacecraft in low earth orbit and has multiple redundant functions and safeguards. The EOS1 supports a single point star, structure referencing grounding architecture. The power system interfaces are optimized for the Spaceteq standard bus, but are easily customized for any typical small satellite bus.
The Spaceteq EOS1 builds on our strong heritage of power system designs for microsatellite projects. The EOS1 is a core component of the EO-SAT1 satellite bus.
Power Control Unit (PCU): Manages energy input, and output to 700 W peak
Power Distribution Unit (PDU): Fully dual redundant 8 channel tripping power switch
Power architecture: Direct Energy Transfer
Communication bus: CAN bus
Various operational and test modes
POWER CONTROL UNIT
The PCU is used to receive power from solar panels, interface battery energy storage, regulate and protect the upper and lower battery limit voltages, establish an unregulated battery power bus and control power distribution to downstream satellite subsystems. The separation switch and ground support equipment is also interfaced.