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In many future NASA missions (such
as deep-space exploration) high power electrical components and systems
must operate reliably and efficiently in environments where the
temperature range is extreme. NASA Glenn is working at the heart of
this uncharted area in
space and aeronautics, extending the temperature envelope for a suite
of
electronic systems by developing components and systems that provide
tolerance to hostile environments. The goals of the low temperature
electronics program are:
- To support development of efficient, lightweight, long-life
power components and systems capable of low temperature operation.
- To support customers and users in their development of the
technologies that they need.
1000 Watt DC/DC Converter, with 500 Volt output, which
operates at -185 ºC.
Applications:
Exposure and operation of electronic systems and devices in harsh
environments, where cold temperatures are encountered, are anticipated
in many applications. These include:
- Space
- Surface exploration of the outer planets
- Space probes
- Communication & imaging satellites
- Space based telescopes
- Terrestrial
- Commercial energy storage
- Magnetic levitation transport systems
- Medical instrumentation & biomedical research
- Physics research
Benefits
Power electronics capable of low temperature operation will not only
survive the harsh environments but may also provide several system
benefits.
Among these are:
- Passive thermal management
- Improved reliability & lifetime
- Higher energy & power densities
- Reduced weight & launch costs
R & D Efforts
The efforts are pursued by analyzing, designing, and evaluating
components and systems; fabricating and demonstrating prototype
circuits. Typical approaches that are adopted during the investigation
are as follows:
- Identify application requirements & system
specifications
- Select and characterize state-of-the-art components
- Using existing technology, demonstrate circuits &
identify
critical technology needs
- Develop advanced components & circuits to meet
critical needs
- Transfer technology to mission/user groups
Some of the major on-going R&D efforts that are being
performed in-house are:
- Systems
- DC/DC converters
- Power supplies
- Energy storage
- Components
- Power switches
- Capacitors & magnetics
- Integrated circuits
- Fiber-optics
- Batteries
- Materials
Planned future efforts will focus on, but are not limited to, the
following:
- Communication systems
- Superconducting hybrid devices
- Sensor circuits & interfaces
Facilities
Major research and test facilities exist at the NASA Glenn Research
Center that can be utilized to carry out the activities of this
program. These state-of-the-art facilities include:
- Cryogenic Chambers
- Passive Components Evaluation
- Semiconductor Characterization
- Dielectric Material Characterization
- Cryogenic Circuit Characterization
Collaboration
Coordination of the research and development efforts are implemented
extensively with various partners. This collaboration involves:
- Government Agencies
- Aerospace Industry
- Academia
The joint collaborative work with the various institutions is
implemented via the following venues:
- In-House
- Contracts
- Grants
- Space Act Agreements (SAA)
- Small Business Innovative Research (SBIR)
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