Abstract
This paper presents the ‘High Power’ Power Control and Distribution Unit (HP-PCDU) which has been designed as modular and generic equipment in order to cope with the growing power demand of Low Earth Orbit (LEO) missions. Next to the AS400 satellite platform of Airbus Defence and Space it will be used for the MetOp-SG satellites.The HP-PCDU supports unregulated bus voltages of 50V and 100V and provides a 30V secondary regulated power bus.Solar Array Regulation with Maximum Power Point Tracking (MPPT) is performed by Buck-Boost-Regulators (B2R) operated in a cold-redundant ‘N+1’ topology. A new FDIR strategy based on discrete hardware protections and FPGA-logic for autonomous failure handling is presented.Next to an outline of other power control and distribution functions this paper also includes a summary of the novel High Rate Diagnostics Mode that allows monitoring telemetry signals with a time resolution up to 200μs.
Highlights
This paper presents the 'High Power' Power Control and Distribution Unit (HP-PCDU) which has been designed as modular and generic equipment in order to cope with the growing power demand of Low Earth Orbit (LEO) missions
This paper illustrates the functionality and the wide performance range of the High Power PCDU product developed by Airbus Defence and Space
The unit is implemented in the AS400 satellite platform and other LEO missions (e.g. MetOp-SG)
Summary
In a system study on New Modular and Flexible Power Systems for LEO Missions performed by ESA and carried out by Astrium ( Airbus Defence and Space), architectures and sizing of various existing and upcoming LEO missions have been analysed. Following the results of this study, Airbus Defence and Space has defined the AS400 'High Power' LEO platform for which the AS400 PCDU has been developed as the key equipment of the Electrical Power System (EPS). The High Power PCDU extends the range of generic LEO PCDUs available from Airbus Defence and Space beyond the power class of the LEO PCDU EVO [5] for a Solar Array Power of more than 7kW, bus voltages of 50V or 100V and Maximum Power Point Tracking. During the design phase special attention was put on creating a modular and scalable product which can be used in a wide range of satellite and EPS configurations enveloping the following: x Unregulated Main Bus voltage adaptable to 50V or. 30V, providing up to 2500W with single failure tolerance x Provision of up to 124 Latching Current Limiters (LCL) with current capabilities ranging from 0.5A to 20A nominal trip-off current x Provision of up to 288 (nominal and redundant) switchable heater outlets x Provision of up to 72 (nominal and redundant) release initiator lines, configurable to drive either electro-explosive or heating device actuators
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
