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Development and Validation of Linear Alternator Models for the Advanced Stirling ConvertorTwo models of the linear alternator of the Advanced Stirling Convertor (ASC) have been developed using the Sage 1-D modeling software package. The first model relates the piston motion to electric current by means of a motor constant. The second uses electromagnetic model components to model the magnetic circuit of the alternator. The models are tuned and validated using test data and compared against each other. Results show both models can be tuned to achieve results within 7% of ASC test data under normal operating conditions. Using Sage enables the creation of a complete ASC model to be developed and simulations completed quickly compared to more complex multi-dimensional models. These models allow for better insight into overall Stirling convertor performance, aid with Stirling power system modeling, and in the future support NASA mission planning for Stirling-based power systems.
Document ID
Document Type
Conference Paper
Metscher, Jonathan F.
(NASA Glenn Research Center Cleveland, OH United States)
Lewandowski, Edward
(NASA Glenn Research Center Cleveland, OH United States)
Date Acquired
December 30, 2014
Publication Date
July 28, 2014
Subject Category
Engineering (General)
Report/Patent Number
Meeting Information
Propulsion and Energy 2014 Forum(Cleveland, OH)
Funding Number(s)
WBS: WBS 138494.
Distribution Limits
Work of the US Gov. Public Use Permitted.
Linear Alternators
Stirling Cycle
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