Electrical Modeling and Thermal Analysis Toolbox
Introduction
The Electrical Modeling and Thermal Analysis Toolbox
is a Simulink toolbox intended for use in the modeling and simulation of electrical
systems at time scales consistant with the simualtion of mechanical systems such as turbomachinery. EMTAT contains generic electrical
components used to create complex systems to meet the needs of a developer. Development of this tool
was initiated on behalf of the NASA Transformative Aeronautics Concepts Program (TACP)/
Transformational Tools and Technologies (TTT) projects.
Description
This simulation toolbox has been developed to model the electrical portions of Electrified Aircraft Propulsion (EAP) systems, including self-
heating of electrical systems. Dynamic models of EAP systems often include turbomachinery, an electrical power system, and a thermal
management system. These portions of the propulsion system can operate on timescales covering six orders of magnitude, which poses a
challenging modeling task. Assumptions and approximations are made in an effort to capture the dynamics relevant to engine, electrical
system, and thermal system interactions, while still allowing for fast simulations. These assumptions and approximations enable the electrical
component models to run at the time scale of the turbomachinery, neglecting the very high frequency electrical dynamics, while demonstrating
representative behavior of the end-to-end system. Thus the models execute in an acceptable time frame for what would otherwise be an
extremely stiff simulation. The resulting simulations of EAP systems are appropriate for system-level control design and analysis.
EMTAT is written in MATLAB/Simulink (The Mathworks, Inc.), is open source,
and is intended for use by industry, government, and academia. All EMTAT equations
were developed from public sources and all default maps and constants provided in the
EMTAT software package are nonproprietary and available to the public. The software
is released under the Apache V2.0 license agreement.
Getting Started
Stable releases of EMTAT are located under the releases tab. It is encouraged that a user
download the most up to date version using the appropriate software download button (green button).
Installation instructions are detailed in the user's guide which is included within the package (Documentation/TM-20205008125.pdf).
EMTAT encourages open collaboration and if a user wishes to become a developer the software
may be forked at any time via the main page link.