Power Conditioning & Distribution Unit
Radiation-tolerant Power Conditioning and Distribution Unit (PCDU) for small sat platforms.
OVERVIEW
All-in-one, Modular, ITAR-Free, TRL9, Reliable, Bespoke mission design, Maximum Power Point Tracking, Compatible with CAVU Aerospace Solar arrays & range of industry std. panels and batteries.
Omni-P 1,2,3 is CAVU Aerospace PCDU solutions for range of spacecrafts from Cube sat to small satellites with proven performance capabilities. Omni-Power products is an All-In-One solution with Solar Array interface and several different Bus outputs with different power rating.
Omni-P1 features regulated power buses at 3.3V, 5V, and 12V, along with Power Distribution Modules equipped with 10 Latching Current Limiters. Omni-P1 is designed for CubeSat upto 12U with deployable panels. The Omni-P1-1 variant includes an integrated battery with a capacity of up to 20Wh.
Omni-P3 delivers power up to 1500 W with a nominal 28 V bus and battery voltage, featuring power converters for isolated auxiliary outputs. It supports 28 V outputs and redundant power distribution, with FPGA-based control and monitoring of all switches and interfaces via redundant CAN or RS422 links.
Omni-P1: 100 V + 28 V PCDU
- Main bus architecture: 100 V unregulated + 28 V regulated
- SA power conditioning: Sized for 100 V + 28 V architecture
- Battery interface: BCR matched to 100 V bus concept
- Load distribution: LCLs on 100 V and/or 28 V as needed
- Pyro & heater functions: Common modules, identical concepts
- TM/TC and control logic: Common core electronics
- Target applications: High-power users needing 100 V bus
Omni-P2: 28 V Main Bus PCDU
- Main bus architecture: 28 V unregulated
- SA power conditioning: Sized for 28 V architecture
- Battery interface: BCR matched to 28 V bus concept
- Load distribution: LCLs on 28 V main bus
- Pyro & heater functions: Common modules, identical concepts
- TM/TC and control logic: Common core electronics
- Target applications: Platforms standardized on 28 V bus
| Interface Group | Direction | Main Quantities | Omni-P1: 100 V + 28 V PCDU | Omni-P2: 28 V Main Bus PCDU | Notes |
|---|---|---|---|---|---|
| Solar Arrays | Into PCDU | SA strings, section currents | ✔ | ✔ | MPPT/S3R or agreed scheme |
| Battery | Bi-directional | Charge/discharge, sense lines | ✔ | ✔ | BCR, protections, sensing |
| Main Buses | Out of PCDU | 100 V, 28 V regulated / unreg. | ✔ | ✔ | Bus type differs per option |
| Load Outputs | Out of PCDU | LCL-protected load feeds | ✔ | ✔ | Essential / non-essential grouping |
| Pyros | Out of PCDU | Dual firing lines per device | ✔ | ✔ | Arming/safing, status lines |
| Heaters | Out of PCDU | Switched heater feeds | ✔ | ✔ | Groups, priorities |
| TM/TC & HK | Bi-directional | CAN bus, discrete, HK TM | ✔ | ✔ | Primary command & status interface |
| Ground/EMC | Reference/ N/A | Chassis & signal returns | ✔ | ✔ | Earthing, bonding, filtering concept |
