Executive Summary
This thesis investigates reducing electromagnetic interference (EMI) in Navy integrated Power Electronics Building Blocks (NiPEBB) to meet MIL-STD-461G standards. It proposes a novel single-phase four-leg inverter topology with delta modulation control that effectively cancels common mode voltage, achieving near compliance without bulky EMI filters. This contributes to developing lightweight, EMI-compliant modular power electronics for naval applications.
Why It Matters
This research is crucial for defense analysts as it addresses critical power electronics challenges in naval applications, directly impacting the operational effectiveness and survivability of modern warships by reducing electromagnetic interference and system weight.
Key Takeaways
- A novel single-phase four-leg inverter topology is proposed to mitigate electromagnetic interference (EMI) in Navy integrated Power Electronics Building Blocks (NiPEBBs).
Source evidence · PDF page 8
This research contributes to the broader goal of NiPEBBs: the development of lightweight, EMI-compliant modular power electronics for naval applications.
- The inverter utilizes a voltage controller with delta modulation and switches legs in pairs to theoretically cancel common mode voltage (CMV) at the source.
Source evidence · PDF page 74
This work introduces a novel single-phase inverter topology, where the top two totem-pole legs and the bottom two totem-pole legs of the four-leg H-bridge are shorted together. This innovative design, combined with a voltage controller utilizing delta modulation as the inner control loop, switches the inverter legs in pairs and ideally cancels the CMV produced by the inverter.
- Experimental results show the prototype achieves near compliance with MIL-STD-461G conducted emissions limits (CE101 and CE102) with minimal filtering, supporting the development of lightweight naval power electronics.
Source evidence · PDF page 74
Laboratory results demonstrated that this approach achieves near compliance with CE101 and CE102 standards without requiring a full-size EMI filter.
Strategic Relevance
Reducing EMI and system weight in naval power electronics enhances the reliability, efficiency, and stealth capabilities of warships, directly supporting fleet modernization and combat effectiveness. This research contributes to the strategic goal of deploying advanced, resilient power systems in military platforms.