Research and Development of Micro-module PDU

Micro-module PDUs are compact, modular power distribution units designed for scalable, reliable, and serviceable power management in EVs, data centers, and distributed computing networks.

Modular Architecture and Design Principles

Micro-module PDUs leverage modular architectures to enable scalable power distribution using standardized components, which reduces tooling requirements, accelerates integration, and improves serviceability ( ). In electric vehicles, these PDUs manage high-voltage systems ranging from 48V to 1kV, distributing power to traction inverters, compressors, heating systems, and auxiliary loads while integrating protective functions like fuses, relays, and contactors ( ). In data centers, modular PDUs allow hot-swappable output modules and control modules, enabling upgrades or socket changes without interrupting power to other units ( ).

Applications in EVs and Data Centers

• Electric Vehicles (EVs): Micro-module PDUs are designed for harsh automotive environments, ensuring thermal stability, precise current handling, and mechanical durability. They simplify system design and reduce engineering overhead by using ready-to-integrate building blocks ( ).
• Data Centers: Intelligent PDUs provide real-time monitoring of electrical parameters, load trends, and remote management capabilities. Modular designs reduce Mean Time To Repair (MTTR) and enhance system availability ( ).
• Distributed Computing Networks: Smart PDUs in nano-satellite or embedded computing networks monitor current consumption, supervise load distribution, and broadcast parameters to administrators, ensuring fault tolerance and operational efficiency ( ).

Development and Testing Procedures

R&D of micro-module PDUs involves hardware and software integration, including microcontroller-based control, real-time operating systems, and intra-module communication via CAN-FD or similar protocols ( ). Key testing procedures include:

• Board-Level Verification: Testing DC-DC stages, current sensing, voltage broadcast paths, and fault injection to ensure safe shutdown and continued operation under degraded conditions.
• Integration Testing: Phase alignment, ripple cancellation, and supervisory control verification across multiple modules.
• Voltage and Fault Testing: High-voltage testing up to 900 VDC, degraded-mode fault injection, and verification of protective mechanisms ( ).

Advantages of Micro-Module PDUs

• Scalability: Easily adapted to different voltage levels and power requirements.
• Serviceability: Hot-swappable modules reduce downtime and simplify maintenance.
• Reliability: Purpose-built components for harsh environments ensure long-term operation.
• Efficiency: Optimized power routing and thermal management improve overall system performance ( ).

Conclusion

The research and development of micro-module PDUs focus on modular, intelligent, and highly reliable power distribution solutions. By combining standardized components, advanced monitoring, and rigorous testing, these PDUs meet the evolving demands of EVs, data centers, and distributed computing networks, offering scalable, serviceable, and efficient power management.