Objectives

During a recent analysis, the U.S. Army identified a critical need for improved energy management by 2040. Specifically, there is a gap in the availability of lightweight, cost-effective inverters that can handle power transfer in both directions—from AC to DC and DC to AC—at varying capacities (60 kW, 30 kW, and 10 kW). These inverters are essential for future tactical vehicles to efficiently manage power between generators and onboard systems.

Description

We are seeking proposals from companies that can develop this family of inverters, addressing the specific requirements and ensuring that the technology can be successfully transitioned into Army operations. These inverters will be deployed in tactical vehicles to enable efficient and flexible power management, allowing vehicles to transition smoothly between generator power (VAC) and onboard power systems (350-600 VDC).

They will support operations in NATO countries with varying voltage standards, which is crucial for ensuring operational readiness and interoperability during joint missions. Proposals should clearly outline how the inverters will meet the technical specifications, including voltage and power transfer capabilities, and how they will integrate with the broader power distribution network. Key proposal requirements are listed below:

Key Requirements:

• Bidirectional Power Transfer: The inverters must be capable of transferring power from alternating current (AC) to direct current (DC) and vice versa. This includes converting power from 600-volt direct current (VDC) to voltage alternating current (VAC) sourced from Advanced Medium Mobile Power Sources (AMMPS) generators. Additionally, the inverters must be able to connect to 350-600 VDC batteries and output power in various required voltages, including 480V 3-phase, 208V 3-phase, 230V single-phase, 400V 3-phase, and 120V single-phase to ensure compatibility with NATO standard voltages.
• Lightweight Design: The inverters should be designed to reduce weight so they can be lifted and operated by two people instead of three, improving mobility and ease of use in the field.
• Cost-Effective Production: The inverters need to be affordable, ensuring that they can be produced and deployed at scale without exceeding budget constraints.
• Compatibility with Tactical Microgrid Standard (TMS): The inverters must operate within the Army’s Tactical Microgrid Standard (MIL-STD 3071) to ensure seamless integration with existing and future power distribution networks.
• Integration with Intelligent Power Distribution: The inverters will be part of an intelligent power distribution system, allowing for seamless interoperability with diverse power sources, including AMMPS generators, NATO-standard systems, and future hybrid power systems in tactical vehicles.

Phase I

This topic is only accepting Direct to Phase II (DP2) proposals for a cost up to $2,000,000 for a 24-month period of performance.

Proposers interested in submitting a DP2 proposal must provide documentation to substantiate that the scientific and technical merit and feasibility equivalent to a Phase I project has been met. Documentation can include data, reports, specific measurements, success criteria of a prototype, etc.

Phase II

Commercial applications of a bidirectional inverter already exist at the 5kW power level and above. To build upon existing technology, the Direct to Phase II (DP2) approach is essential to maintain momentum for operational energy modernization and avoid re-creating existing technology through a Phase I SBIR.

• Milestone Design: 30kW, TMS-compliant prototype solution that Soldiers can easily operate that directly connects to AMMPS and STEP programs.
• Further evaluation from Soldiers at select Army units. Company will offer technology transition and commercialization plans for the DoD and commercial markets.

Phase III

Renewable Energy:

• Solar and Wind Systems: These inverters manage AC and DC power in solar and wind setups. Their lightweight design makes them ideal for both large farms and small, distributed systems.
• Energy Storage: They’re essential for converting power in battery storage systems connected to renewable energy.

Electric Vehicles:

• Charging Stations: Inverters help transfer power between the grid and EV batteries, especially useful for mobile charging stations.
• Vehicle-to-Grid (V2G): They allow vehicles to charge from the grid and supply power back.

Telecommunications and Data Centers:

• UPS Systems: These inverters ensure reliable power conversion for critical infrastructure, even in remote locations.
• Backup Power: They enable smooth transitions between grid power and battery backups during outages.

Maritime:

• Hybrid/Electric Ships: Inverters manage power between generators, batteries, and ship systems, crucial for efficient propulsion.
• Offshore Platforms: They help distribute power from sources like wind turbines across platforms or back to shore.

Aerospace:

• Aircraft Systems: Future electric or hybrid planes can use these inverters to manage onboard power, optimizing energy use.
• Spacecraft: Reliable inverters are key for managing power between solar panels and onboard systems.

Emergency Response:

• Portable Power: In disaster relief, these inverters manage power from generators, solar panels, or batteries, providing electricity in remote areas.
• Mobile Command Centers: They ensure robust power management and easy switching between sources.

Submission Information

For more information, and to submit your full proposal package, visit the DSIP Portal.

SBIR|STTR Help Desk: usarmy.sbirsttr@army.mil