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Space
PCDH

Power Control and Distribution

VECTRONIC Aerospace offers a range of space borne power systems designed specifically for small satellite applications. The PCDU provides power to the spacecraft subsystems and payloads which is drawn from the battery and/or from the solar array.

All models contain battery charge- and discharge regulators, adaptable to different type of batteries e.g. NiCd, NiH2 or Li-Ion technology.

The PCDU monitors solar array, battery and load performance and switches individual subsystems either in response to a telecommand or automatically in the event of an overload or short-cut condition. An overload and inrush current can be defined individually for each single load.

The Power Control Units are available with different number and combinations of switched and unswitched power outlets in different output voltages to meet specific application requirements.

The electronic boards include thermal and over voltage protection circuits.

The unit comprises redundant modules to enhance reliability. Furthermore interfaces to external microswitches, to umbilical lines and to EGSE are implemented as well as quite a number of digital and analogue I/O lines.

The signal interface consists of a dual standard asynchronous SCI on RS422/RS485 level. It can be used in a single full-duplex configuration as well as in a bus architecture. The baud rate is adjustable up to 1Mbaud.

An HPC command interface is available on demand.

With the experience of currently 8 Power Control Units in Orbit, VECTRONIC Aerospace has the knowledge to offer a design which is exceptionally reliable and efficient in terms of mass, volume, power and performance.