This study provides an overview of the 5 kW Ruggedized Integrated Hybrid
Generator System (RIHGS) developed by Enginuity Power Systems for the U.S. Army.
Designed to replace three existing generator models (MEP-531A, MEP-831A, and
RMP-1030A), the RIHGS features; variable-speed load following (1 to 5 kW output
at 120/208V), multi-fuel capability (JP8 and Diesel #2), liquid-cooled permanent
magnet motor, silicon-carbide power electronics with a bidirectional inverter,
software-based controls for efficient operation, thermal management-focused
enclosure design. Experimental results confirm the system maintains normal
operating temperatures at full power. When using JP8 fuel, engine performance
remained stable at 3000 RPM and matched Diesel #2, though fuel economy declined
at lower speeds. Compared to the RMP-1030A, the RIHGS improved fuel efficiency
by 4.6% on a weighted load factor. Additionally, it demonstrated fast transient
load responses (<1 sec) when stepping up from 1 to 5 kW. This generator
combines efficiency, adaptability, and advanced technology to enhance field
power solutions for military operations