H3X Technologies is excited to announce that first builds of the HPDM-350 are now underway. Developed under contract with the U.S. Air Force, the HPDM-350 is the most powerful and compact integrated motor drive in its class—delivering 350 kW of continuous power in a 50 kg package.
Designed for next-generation electric propulsion and hybrid powerplant systems, the HPDM-350 delivers ultra-high torque with built-in redundancy, fault tolerance, and a scalable architecture to meet the rigorous demands of aerospace and defense.
Key Features:
- 1238 Nm at 2700 RPM: Ideal for direct-drive applications—no gearbox required
- Dual windings and inverters: No single point of electrical failure
- Multisector architecture: Supports expansion from 350 kW to 1.5 MW
- Integrated health monitoring: Onboard sensors enable predictive maintenance
Built for Mission-Critical Applications
The HPDM-350 was developed with fault-tolerant operation at its core. Featuring redundant inverters and windings, the system is capable of continuous operation even in the event of an electrical or thermal subsystem failure. This level of reliability makes it ideal for electric aircraft propulsion and other critical systems.
With onboard sensors for real-time monitoring and predictive diagnostics, the HPDM-350 also offers improved operational awareness and reduced maintenance downtime.
As we scale production, the HPDM-350 sets a new benchmark for high-power, lightweight, and intelligent electric propulsion systems. Stay tuned for further updates as we complete testing and integration milestones with our partners in the Air Force and beyond.
For more information, see https://www.h3x.tech/products/hpdm-350