LEO satellites (customizable per mission)
The 3 kW PCDU integrates power regulation, battery management, and distribution. It uses MPPT during sunlight to charge lithium-ion batteries and stabilize bus voltage, and switches seamlessly to discharge mode during an eclipse. With intelligent distribution, multiple DC/DC converters, telemetry/telecommand, and real-time CAN communication, it offers high reliability and modular expandability for stable satellite operations.
Technical Specifications
Parameter | Specification |
Bus voltage | 33.0–46.2 V (nominal 42 V) |
Load capacity | ≥3000 W |
Bus ripple | ≤300 mV |
Static power consumption | ≤12 W |
Regulation | Non-regulated bus |
Transient response | ≤10 ms, ≤1 V disturbance |
MPPT channels | 9, tracking accuracy >99% |
Charging control | CC/CV, three-step voltage |
Discharge control | Hardware over-discharge protection |
Telemetry | Accuracy ≤1.0% (≤5% for some signals) |
Communication | CAN bus, terminal resistor matched |
Flatness | 0.1 mm per 100 mm × 100 mm |
Weight | ≤5.2 kg |
Dimensions | ≤430 × 430 × 50 mm |
Lifetime | ≥7 years |
Operating temperature | -20 ~ +60°C |
Reliability | 0.98 |