Solar Array Simulator for Korean Aerospace Research Institute (KARI)

KOMPSAT (Korean Multi Purpose Satellite) is a South Korea national program developed and operated by KARI. Its objective is to fit South Korea with a worldwide panchromatic and multispectral Earth Observation image database for topography, change detection and surveillance, agriculture monitoring, disaster monitoring and environment monitoring.
The image resolution goes from 1.0 meter panchromatic for KOMPSAT-2 down to 0.55 meter panchromatic for KOMPSAT-3A.

The SAS SCOEs (part of EGSE) are performing the simulation of the solar panels of the satellites during AIT (Assembly Integration Test) phases when these panels are not yet mounted on the spacecraft.
They allow validating the electrical behavior of the on-board equipment w.r.t. changing electrical environment.

Objectives:

• Simulate the power feeding of the solar panels
• Simulate sunlight / eclipse transitions
• Propose validation scripts and scenario
  
  

The systems can be locally controlled by an operator or remotely by a Central Check Out in charge of the test sequences and include second level over voltage and current protections for each solar panel section.

Clemessy ’s performances:

• Overall EGSE project management
• Quality Assurance
• System specifications
• Hardware and software specifications
• RAMS (reliability, availability, maintainability and safety) Studies
• Design
• MAIT (manufacturing, assembly, integration and tests) including
   - Monitoring & Control adaptation
   - FPGA software development
   - Factory integration and validation
• Warranty

Equipment and characteristics:

• Local and remote commands of the equipment via PC stations.
• 19’’ racks including:
  SyCTRL product line (Clemessy specific electronic modules) for :
   - Second level protection
   - Data acquisition and command
• Ethernet programmable power supplies

Some figures:

• 2 x 19’’ racks (Class 100’000 clean room compatible)
• 2 x 6 programmable power supplies
• 2 x 6 over voltage and over current second level protection modules