High Efficiency and High Power Quality Electrical Power Conversion

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N65538-08-M-0154
Agency Tracking Number: N082-181-0243
Amount: $99,727.00
Phase: Phase I
Program: SBIR
Awards Year: 2008
Solicitation Year: 2008
Solicitation Topic Code: N08-181
Solicitation Number: 2008.2
Small Business Information
27 Drydock Avenue, Boston, MA, 02210
DUNS: 187659425
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Jim Munro
 Engineer
 (410) 694-8048
 jim.munro@satcon.com
Business Contact
 Erin Corcoran
Title: Contracts Specialist
Phone: (617) 897-2437
Email: erin.corcoran@satcon.com
Research Institution
N/A
Abstract
The proposed shipboard medium voltage AC to DC converter system will allow for various input and output levels based on a power dense, efficient, low cost, high quality output, and modular design expandable up to 6MW. A 450kW power conversion module uses advanced power switching devices and a uniquely designed isolation transformer. The 13.8kV module front-end is connected across a series cascade of H-Bridges that are switched at a low frequency to reduce losses, synthesize a high quality sine wave, operate at unity power factor, and meet low current distortion per MIL-STD-1399-680. Each DC output of the H-Bridge section acts as an input for a Series Loaded Resonant DC/DC converter that includes high frequency transformer isolation. The SLR converter uses Super Gate Turn Off devices from Silicon Power Corporation operating at a high frequency to minimize the transformer. Low output DC ripple is realized by full wave rectifying and interleaving each SLR output to form a single DC output. Multiple paralleled modules combine to achieve a ripple voltage of 0.1% rated up to 6MW. Each module output is regulated to handle transient load conditions and can be adjusted between 800-to-1000V as influenced by the transformer turns ration.

* Information listed above is at the time of submission. *

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