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Coritech Services orders Ideal Power’s bi-directional battery converters for DoD vehicle-to-grid program
9 May 2014
Ideal Power Inc., developer of a power conversion technology called Power Packet Switching Architecture (PPSA), received a purchase order for ten of its PPSA-enabled 30 kW battery converters from Coritech Services, a provider of custom engineering solutions for a variety of applications including electric vehicle charging. Coritech intends to install the battery converters in its bi-directional electric vehicle charging system for use in Vehicle-to-Grid (V2G) applications for the Department of Defense (DoD).
A new approach to electronic power converters, PPSA has a 100% indirect power transfer compared to direct power transfer from conventional power converters. All the energy runs through, and is temporarily stored in, a high-frequency AC link consisting of an inductor and capacitor.
Since the input and output are never directly connected together, this novel current modulation technique provides circuit isolation without the size, weight, cost, and efficiency loss of a transformer. It also provides buck/boost voltage conversion, bi-directional power transfer, and multiport applications with any combination of independently-controlled AC and DC power ports.
Among the many benefits of PPSA as compared with conventional systems are reduced size, lower cost and improved efficiency.
Ideal Power’s 30 kW Bi-Directional Battery Converter (IBC-30kW-480) is suited for DC fast charging of electrified vehicles including Plug-in Hybrid Electric Vehicles (PHEV) and fully Electric Vehicles (EV), significantly lowering charging time and improving charging efficiency compared to on-board low-power AC charging systems. Multiple IBC-30kW-480 converters can be used in parallel to provide higher power capability.
|Application diagram. Click to enlarge.|
V2G technology allows electrified vehicles to supply power to the local grid to improve the energy independency and grid resiliency of commercial and government installations.
In 2013, Coritech developed a commercial truck V2G demonstration as part of the Smart Power Infrastructure Demonstration for Energy Reliability and Security (“SPIDERS”) program. (Earlier post.) SPIDERS is a joint program that includes the participation of the DoD, Department of Energy and Department of Homeland Security.
After the initial demonstration phases of the SPIDERS program were completed, the DoD announced plans to enable a wider deployment of up to 500 electric vehicles at select installations. Coritech plans to deploy systems that include the PPSA battery converters it is purchasing at these DoD installations.
Navigant Research estimates more than 250,000 V2G-enabled electric vehicles will be sold worldwide from 2013 to 2022. The SPIDERS program is expected to help inform larger infrastructure investment decisions and adoption of renewable energy and advanced energy storage in the civilian sector.
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