PAGE CONTENTS
Objectives
The objective of the activity is to analyse and apply innovative power bus control schemes for geostationary missions. The aim of the new control scheme is to improve the power bus quality and reduce the size of the bus capacitor without a negative impact on the reliability of the system.
Challenges
- Reduction of power system mass
- Coping with increased multi-junction solar array capacitive parasitics
- Reduction of the power bus capacitor
- Improvement of power bus quality
- Reduction of thermal dissipation
- Fault-tolerance
Plan
Task 1:
- Identification of the critical parameters that are design drivers in terms of bus quality and bus capacitor sizing.
- Identification of the maximum bus capacitor saving achievable.
- Investigation of different possible control strategies that can either reduce the bus capacitor size or improve the bus quality.
- Investigation of the control strategies in terms of practical implementation, parts availability, stability performance, tolerance to failures, cost, etc.
- Perform a trade-off analysis between the possible solutions, and choose the one (or two) most promising concept(s) for the remaining activities.
- Completion of a detailed design and analysis.
- Testing of the proposed concepts in a demonstrator power system.
- Comparison of the test results to the expected results from the analysis.
Current Status
All tasks are completed.