H3X Technologies (@h3x_tech) header
H3X Technologies (@h3x_tech) profile picture

Making the world's most power-dense electric motors

Colorado, USA
Joined April 2025
Photo by H3X Technologies (@h3x_tech)Photo by H3X Technologies (@h3x_tech)Photo by H3X Technologies (@h3x_tech)Photo by H3X Technologies (@h3x_tech)Photo by H3X Technologies (@h3x_tech)Photo by H3X Technologies (@h3x_tech)Photo by H3X Technologies (@h3x_tech)Photo by H3X Technologies (@h3x_tech)Photo by H3X Technologies (@h3x_tech)Photo by H3X Technologies (@h3x_tech)
1 megawatt (1340 hp) motor in a suitcase
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Fresh batch of 30kW electric motors heading to customers :)
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First prototype of our 92kW (120hp) submerged propulsor. Built and tested. The elegance is in the simplicity of the design - passive water cooling, integrated inverter, integrated thrust bearing. We believe this is the architectural endpoint for electric marine propulsion. Scalable in design up to multi-megawatt systems.
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To validate thermal performance on our dyno, we built an exterior enclosure and pumped fluid across the housing surface to replicate in-water flow conditions. A simple rig, but worked super well.
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#tbt 2021 one of our earliest integrated inverter designs - 250kW, Silicon carbide, radially mounted
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120hp electric propulsor for marine. ultra-compact 4 inch diameter. submersion cooling. direct-drive. integrated SiC inverter.
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Great success at Reindustrialize 🇺🇸 We brought some new hardware: 1. 30kW (40hp) hybrid powerplant 2. 90kW (120hp) submerged propulsor 3. 180kW (242hp) integrated motor drive 4. 1MW (1341hp) integrated motor drive Thank you to the @reindsummit team. Amazing event. Time to build 🔨
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Heading to @reindsummit next week where we will be unveiling something big. Time to show the world what we've been building over the last year.
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Demand for compact megawatt-class diesel gensets is exploding in marine & industrial sectors - thanks to US shipbuilding, AI datacenters, and oil & gas. In response, we're building a modular 2MW genset system built around our HPDM-500 generators and a custom developed gearbox. Our first implementation is with a CAT C32B engine, but the system can bolt up to any engine from 500kW to 2MW with an SAE 0 interface. Key value adds: -Compact footprint: C32B system is ~9 ft shorter than conventional gensets at this power level - critical for hybridized ships where weight and space matter - Native high-voltage HVDC output (600–800 VDC): Integrated power electronics provide direct DC output, eliminating standalone rectifier cabinets and reducing conversion losses (~99% efficient). This architecture is well-suited for modern DC-distribution systems, including emerging 800 V-class data center platforms. - Fault-tolerant architecture: The multisector design of the HPDM-500 enables graceful degradation and continued operation in the event of component-level faults—critical for mission-critical marine and industrial applications.
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HPDM-180R • Electric motor + inverter + reduction gearbox • 180kW (240hp) continuous • 3000rpm • 16.7kg What enables this performance + High thermal conductivity, low-AC-loss stator winding + >99% efficient integrated SiC inverter + In-house manufactured advanced magnetic core lamination stacks + DMLS additive housing with synergistic cooling architecture + Single-stage planetary gearbox with titanium carrier
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BUILDING THE TEST STACK FOR RAPID ITERATION 🧵
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Our engineers have been cookin.' The HPDM-500 is the latest step in the evolution of our ultra-high power density electric motors. 500kW (670HP) in a package small enough where you could fit two of these in a carry-on suitcase. Stackable (1MW), Engineered for 70k ft, Fault tolerant (dual integrated inverters)
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HPDG-30 Hybrid Powerplant Bench Validation Testing Complete ✅
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Specs (as measured) ◼️ Electrical Power Out: 25kW at 5300' DA (est. 30kW at sea level) ◼️ Projected Weight: 30 kg ◼️ System Power Density: 1 kW/kg ◼️ Specific Fuel Consumption (SFC): 690 g/kWhr ◼️ Voltage Output: 200-450VDC (testing at 270VDC) ◼️ Specific Energy (w/ 1 hr of fuel): 591 Wh/kg
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The HPDG-30 has successfully been tested up to max continuous power at our Colorado HQ facility (5300 ft altitude). We’re now focused on endurance runs at full power to prove out reliability of critical components and then transition into flightworthy hardware. Our team is rapidly moving through development and early prototypes will ship to pilot customers in December, with flightworthy units on track for validation and delivery in 26Q2.
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5 Years At H3X! 🎉🍾 Five years ago, H3X was just an idea. All we had was a basic cad model and a bold vision for an electrified future powered by H3X motors. Today, we’re shipping real hardware to customers building everything from supersonic jets to hydrofoiling boats to electric aircraft. Along the way, we’ve assembled a world-class team of engineers and builders who bring ambitious ideas to life everyday with relentless execution and focus. We are building the enabling technology that will radically transform not just one industry, but several. Thank you to everyone who came out to celebrate with us last week!  This is only the beginning 🚀
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Form 🤝 Function Rotor structure of our HPDM-350 was too cool not to share. Strong, stiff, light, and optimized for extreme thermal gradients while maintaining precise airgap control ♨️ ❄️
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