This project focuses on electric motor thermal management research. It is a collaboration between National Renewable Energy Laboratory (NREL) and other organizations. NREL leads thermal and reliability research to support developing compact, reliable, and efficient electric machines. The project supports research to increase motor power density by 10x and lifetime by 2x while reducing costs by 53% according to DOE targets. NREL works on material and interface characterization, motor thermal analysis, and experimental validation of cooling approaches. The project aims to address barriers related to cost, power density, and lifetime of electric motors.
Accelerators at ORNL - Application Readiness, Early Science, and Industry Impactinside-BigData.com
In this deck from the 2014 HPC User Forum in Seattle, John A. Turner from Oak Ridge National Laboratory presents: Accelerators at ORNL - Application Readiness, Early Science, and Industry Impact.
In this deck from the 2018 Rice Oil & Gas Conference, Doug Kothe from ORNL provides an update on the Exascale Computing Project.
“The quest to develop a capable exascale ecosystem is a monumental effort that requires the collaboration of government, academia, and industry. Achieving exascale will have profound effects on the American people and the world—improving the nation’s economic competitiveness, advancing scientific discovery, and strengthening our national security.”
Watch the video: https://wp.me/p3RLHQ-idv
Learn more: https://www.exascaleproject.org/
and
http://rice2018oghpc.rice.edu/
Sign up for our insideHPC Newsletter: http://insidehpc.com/newsletter
Accelerators at ORNL - Application Readiness, Early Science, and Industry Impactinside-BigData.com
In this deck from the 2014 HPC User Forum in Seattle, John A. Turner from Oak Ridge National Laboratory presents: Accelerators at ORNL - Application Readiness, Early Science, and Industry Impact.
In this deck from the 2018 Rice Oil & Gas Conference, Doug Kothe from ORNL provides an update on the Exascale Computing Project.
“The quest to develop a capable exascale ecosystem is a monumental effort that requires the collaboration of government, academia, and industry. Achieving exascale will have profound effects on the American people and the world—improving the nation’s economic competitiveness, advancing scientific discovery, and strengthening our national security.”
Watch the video: https://wp.me/p3RLHQ-idv
Learn more: https://www.exascaleproject.org/
and
http://rice2018oghpc.rice.edu/
Sign up for our insideHPC Newsletter: http://insidehpc.com/newsletter
Investigation of Metal and Chemical Hydrides for Hydrogen Storage in Novel Fu...chrisrobschu
DOE Funded Activities
Objectives:
•Use engineering analyses to screen H2 storage systems against DoD targets & requirements (FY15)
•Identify suitable hydrogen storage materials and suitable vehicle demonstration platforms
•Develop a preliminary design of an integrated UUV design with a solid hydrogen storage system
•Complete detailed design of the hydrogen storage system
•Complete integrated system design
ONR/NUWC Funded Activities
Objectives:
•
Design and build a small bench-scale, alane-based, hydrogen storage vessel
•
Perform preliminary testing on the bench-scale, storage system
•
Package and ship bench-scale vessel and alanematerial to the Navy NUWC
•
Provide technical support to Navy NUWC for their further testing and evaluation
Doe amr st134_motyka_2016_p
U.S. Department of Energy 2015 Quadrennial Technology ReviewKeith D. Patch
Instead of reading the complete 505 page QTR document, review this presentation on the U.S. Dept. of Energy's 2015 Quadrennial Technology Review (QTR) by Dr. Lynn Orr, Under Secretary for Science and Energy, US Department of Energy. This presentation was sponsored by the MIT Energy Initiative, was given from 5:00 - 6:00 pm on Thursday, September 24, 2015, and was situated at Building E14, 6th floor, of the MIT Media Lab.
Abstract
The United States is in the midst of an energy revolution. Over the last decade, the United States has slashed net petroleum imports, dramatically increased shale gas production, scaled up wind and solar power, and cut the growth in electricity consumption to nearly zero through widespread efficiency measures. Technology is helping to drive this revolution, enabled by years to decades of research and development that underpin these advances in the energy system. The Department of Energy’s 2015 Quadrennial Technology Review (QTR) examines the status of the science and technology that are the foundation of our energy system, together with the research, development, demonstration, and deployment opportunities to advance them. This analysis is particularly instructive in the run up to the international climate negotiations taking place later this year at the 21st Conference of Parties, as technological advancements will be crucial to achieving global greenhouse gas emissions reductions. During his presentation, Under Secretary for Science and Energy Lynn Orr will provide an overview of the highlights of the QTR report and discuss examples of promising research and development opportunities that can help the nation achieve a low carbon economy.
In this deck from the HPC User Forum at Argonne, Andrew Siegel from Argonne presents: ECP Application Development.
"The Exascale Computing Project is accelerating delivery of a capable exascale computing ecosystem for breakthroughs in scientific discovery, energy assurance, economic competitiveness, and national security. ECP is chartered with accelerating delivery of a capable exascale computing ecosystem to provide breakthrough modeling and simulation solutions to address the most critical challenges in scientific discovery, energy assurance, economic competitiveness, and national security. This role goes far beyond the limited scope of a physical computing system. ECP’s work encompasses the development of an entire exascale ecosystem: applications, system software, hardware technologies and architectures, along with critical workforce development."
Watch the video: https://wp.me/p3RLHQ-kSL
Learn more: https://www.exascaleproject.org
and
http://hpcuserforum.com
Sign up for our insideHPC Newsletter: http://insidehpc.com/newsletter
Investigation of Solid State Hydrides For Autonomous Fuel Cell Vehicleschrisrobschu
Joint Department of Energy Department of Navy
Hydrogen storage material aluminum hydride, or Alane, for Unmanned Undersea Vehicles
St134 teprovich 2017_o
In this deck from the HPC User Forum in Detroit, Muhsin Ameen from Argonne National Laboratory presents: Towards Exascale Engine Simulations with NEK5000.
"High-order methods have the potential to overcome the current limitations of standard CFD solvers. For this reason, we have been developing and improving the spectral element code NEK5000 for more than 30 years now. It features state-of-the-art, scalable algorithms that are fast and efficient on platforms ranging from laptops to the world’s fastest computers. Applications span a wide range of fields, including fluid flow, thermal convection, combustion and magnetohydrodynamics. Our user community includes over 400+ scientists and engineers in academia, laboratories and industry."
Watch the video: https://wp.me/p3RLHQ-j7R
Learn more: https://nek5000.mcs.anl.gov/
and
http://hpcuserforum.com
Sign up for our insideHPC Newsletter: http://insidehpc.com/newsletter
VTT Technical Research Centre of Finland is an impartial and independent provider of R&D services. The presentation outlines our competences related to energy systems and gives examples of results accomplished in partnership with the industry. Presentation at Wasa Wind and Solar exhibition.
Energy simulation & analysis of two residential buildingschirag aggarwal
-> Analysed and compared the energy consumption of a residential building modelled using common building materials and specifications used in Delhi for decades to that of modelled by altering the building envelope and the AC system specifications.
-> Used eQUEST software.
Presented by René Kamphuis, TNO NL and Matthias Stifter, AIT Energy Department, Austria at the IEA DSM workshop in Lucerne, Switzerland on 16 October 2013.
AN EXPERIMENTAL DESIGN & ANALYSIS OF PORTABLE USB POWERED THERMO ELECTRIC COOLERPranavNavathe
Refrigerators are energy consuming home appliances and for this reason researchers are performed to enhance performance work of the refrigeration systems. Most of research work done so far deals with an objective of low energy consumption and refrigeration enchantment. Thermoelectric refrigeration is one of the techniques to produce refrigeration effect. This project demonstrates how far thermoelectric refrigeration can be modified to produce refrigeration effect with low power input and high cooling effect.
In this project a portable thermoelectric (Peltier) cooler is designed and fabricated for multipurpose use (Like beverage cooling, water cooling, and milk storage). It is operated on USB with low power, portable in nature and compact in seize. This project carries out cooling effect analysis, steady state heat transfer finite element analysis on different water bottle materials with different heat transfer plates, thermal insulation jacket in ANSYS R19 workbench. Power consumption of this device and its performance is experimented and calculated with practical model on DC-DC to boost converter, also TEC inter components CFD analysis done in ANSYS Fluent.
Keywords: Peltier Module, USB, DC-DC Boost Converter, Heat Transfer Plates, Thermal insulation Jacket, Steady State Heat Transfer Finite Element Analysis, CFD Analysis, ANSYS Fluent.
Overview of the Exascale Additive Manufacturing Projectinside-BigData.com
In this video from the HPC User Forum in Santa Fe, John Turner from ORNL presents: Overview of the Exascale Additive Manufacturing Project.
"Fully exploiting future exascale architectures will require a rethinking of the algorithms used in the large scale applications that advance many science areas vital to DOE and NNSA, such as global climate modeling, turbulent combustion in internal combustion engines, nuclear reactor modeling, additive manufacturing, subsurface flow, and national security applications. The newly established Center for Efficient Exascale Discretizations (CEED) in DOE’s Exascale Computing Project (ECP) aims to help these DOE/NNSA applications to take full advantage of exascale hardware by using state-of-the-art ‘high-order discretizations’ that provide an order of magnitude performance improvement over traditional methods."
Watch the video: http://wp.me/p3RLHQ-gHb
Learn more: https://exascaleproject.org/
and
http://hpcuserforum.com
Sign up for our insideHPC Newsletter: http://insidehpc.com/newsletter
Investigation of Metal and Chemical Hydrides for Hydrogen Storage in Novel Fu...chrisrobschu
DOE Funded Activities
Objectives:
•Use engineering analyses to screen H2 storage systems against DoD targets & requirements (FY15)
•Identify suitable hydrogen storage materials and suitable vehicle demonstration platforms
•Develop a preliminary design of an integrated UUV design with a solid hydrogen storage system
•Complete detailed design of the hydrogen storage system
•Complete integrated system design
ONR/NUWC Funded Activities
Objectives:
•
Design and build a small bench-scale, alane-based, hydrogen storage vessel
•
Perform preliminary testing on the bench-scale, storage system
•
Package and ship bench-scale vessel and alanematerial to the Navy NUWC
•
Provide technical support to Navy NUWC for their further testing and evaluation
Doe amr st134_motyka_2016_p
U.S. Department of Energy 2015 Quadrennial Technology ReviewKeith D. Patch
Instead of reading the complete 505 page QTR document, review this presentation on the U.S. Dept. of Energy's 2015 Quadrennial Technology Review (QTR) by Dr. Lynn Orr, Under Secretary for Science and Energy, US Department of Energy. This presentation was sponsored by the MIT Energy Initiative, was given from 5:00 - 6:00 pm on Thursday, September 24, 2015, and was situated at Building E14, 6th floor, of the MIT Media Lab.
Abstract
The United States is in the midst of an energy revolution. Over the last decade, the United States has slashed net petroleum imports, dramatically increased shale gas production, scaled up wind and solar power, and cut the growth in electricity consumption to nearly zero through widespread efficiency measures. Technology is helping to drive this revolution, enabled by years to decades of research and development that underpin these advances in the energy system. The Department of Energy’s 2015 Quadrennial Technology Review (QTR) examines the status of the science and technology that are the foundation of our energy system, together with the research, development, demonstration, and deployment opportunities to advance them. This analysis is particularly instructive in the run up to the international climate negotiations taking place later this year at the 21st Conference of Parties, as technological advancements will be crucial to achieving global greenhouse gas emissions reductions. During his presentation, Under Secretary for Science and Energy Lynn Orr will provide an overview of the highlights of the QTR report and discuss examples of promising research and development opportunities that can help the nation achieve a low carbon economy.
In this deck from the HPC User Forum at Argonne, Andrew Siegel from Argonne presents: ECP Application Development.
"The Exascale Computing Project is accelerating delivery of a capable exascale computing ecosystem for breakthroughs in scientific discovery, energy assurance, economic competitiveness, and national security. ECP is chartered with accelerating delivery of a capable exascale computing ecosystem to provide breakthrough modeling and simulation solutions to address the most critical challenges in scientific discovery, energy assurance, economic competitiveness, and national security. This role goes far beyond the limited scope of a physical computing system. ECP’s work encompasses the development of an entire exascale ecosystem: applications, system software, hardware technologies and architectures, along with critical workforce development."
Watch the video: https://wp.me/p3RLHQ-kSL
Learn more: https://www.exascaleproject.org
and
http://hpcuserforum.com
Sign up for our insideHPC Newsletter: http://insidehpc.com/newsletter
Investigation of Solid State Hydrides For Autonomous Fuel Cell Vehicleschrisrobschu
Joint Department of Energy Department of Navy
Hydrogen storage material aluminum hydride, or Alane, for Unmanned Undersea Vehicles
St134 teprovich 2017_o
In this deck from the HPC User Forum in Detroit, Muhsin Ameen from Argonne National Laboratory presents: Towards Exascale Engine Simulations with NEK5000.
"High-order methods have the potential to overcome the current limitations of standard CFD solvers. For this reason, we have been developing and improving the spectral element code NEK5000 for more than 30 years now. It features state-of-the-art, scalable algorithms that are fast and efficient on platforms ranging from laptops to the world’s fastest computers. Applications span a wide range of fields, including fluid flow, thermal convection, combustion and magnetohydrodynamics. Our user community includes over 400+ scientists and engineers in academia, laboratories and industry."
Watch the video: https://wp.me/p3RLHQ-j7R
Learn more: https://nek5000.mcs.anl.gov/
and
http://hpcuserforum.com
Sign up for our insideHPC Newsletter: http://insidehpc.com/newsletter
VTT Technical Research Centre of Finland is an impartial and independent provider of R&D services. The presentation outlines our competences related to energy systems and gives examples of results accomplished in partnership with the industry. Presentation at Wasa Wind and Solar exhibition.
Energy simulation & analysis of two residential buildingschirag aggarwal
-> Analysed and compared the energy consumption of a residential building modelled using common building materials and specifications used in Delhi for decades to that of modelled by altering the building envelope and the AC system specifications.
-> Used eQUEST software.
Presented by René Kamphuis, TNO NL and Matthias Stifter, AIT Energy Department, Austria at the IEA DSM workshop in Lucerne, Switzerland on 16 October 2013.
AN EXPERIMENTAL DESIGN & ANALYSIS OF PORTABLE USB POWERED THERMO ELECTRIC COOLERPranavNavathe
Refrigerators are energy consuming home appliances and for this reason researchers are performed to enhance performance work of the refrigeration systems. Most of research work done so far deals with an objective of low energy consumption and refrigeration enchantment. Thermoelectric refrigeration is one of the techniques to produce refrigeration effect. This project demonstrates how far thermoelectric refrigeration can be modified to produce refrigeration effect with low power input and high cooling effect.
In this project a portable thermoelectric (Peltier) cooler is designed and fabricated for multipurpose use (Like beverage cooling, water cooling, and milk storage). It is operated on USB with low power, portable in nature and compact in seize. This project carries out cooling effect analysis, steady state heat transfer finite element analysis on different water bottle materials with different heat transfer plates, thermal insulation jacket in ANSYS R19 workbench. Power consumption of this device and its performance is experimented and calculated with practical model on DC-DC to boost converter, also TEC inter components CFD analysis done in ANSYS Fluent.
Keywords: Peltier Module, USB, DC-DC Boost Converter, Heat Transfer Plates, Thermal insulation Jacket, Steady State Heat Transfer Finite Element Analysis, CFD Analysis, ANSYS Fluent.
Overview of the Exascale Additive Manufacturing Projectinside-BigData.com
In this video from the HPC User Forum in Santa Fe, John Turner from ORNL presents: Overview of the Exascale Additive Manufacturing Project.
"Fully exploiting future exascale architectures will require a rethinking of the algorithms used in the large scale applications that advance many science areas vital to DOE and NNSA, such as global climate modeling, turbulent combustion in internal combustion engines, nuclear reactor modeling, additive manufacturing, subsurface flow, and national security applications. The newly established Center for Efficient Exascale Discretizations (CEED) in DOE’s Exascale Computing Project (ECP) aims to help these DOE/NNSA applications to take full advantage of exascale hardware by using state-of-the-art ‘high-order discretizations’ that provide an order of magnitude performance improvement over traditional methods."
Watch the video: http://wp.me/p3RLHQ-gHb
Learn more: https://exascaleproject.org/
and
http://hpcuserforum.com
Sign up for our insideHPC Newsletter: http://insidehpc.com/newsletter
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
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Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Governing Equations for Fundamental Aerodynamics_Anderson2010.pdf
79955.pdf
1. Electric Motor Thermal Management
Kevin Bennion
National Renewable Energy Laboratory
June 22, 2021
DOE Vehicle Technologies Program
2021 Annual Merit Review and Peer Evaluation Meeting
This presentation does not contain any proprietary, confidential, or otherwise restricted information.
Project ID: ELT214
2. NREL | 2
Overview
• Project start date: October 2018
• Project end date: September 2023
• Percent complete: 50%
Budget
• Total project funding: $750,000
o DOE share: $750,000
• Funding for FY 2020: $250,000
• Funding for FY 2021: $250,000
Barriers
• Cost
• Power density
• Lifetime
• National Renewable Energy Laboratory (NREL)
o Lead for thermal and reliability research
• Oak Ridge National Laboratory (ORNL)
o Motor development, modeling, and material research
• Ames Laboratory
o Motor material research
• Sandia National Laboratories (SNL)
o Motor and materials research
• Georgia Institute of Technology (Georgia Tech)
o Motor thermal management technologies
• University of Wisconsin Madison
o Motor thermal management technologies.
Timeline Partners
3. NREL | 3
Relevance
• This project is part of the Electric Drive Technologies (EDT) Consortium and
focuses on NREL’s role under Keystone 2
Keystone 1
• Power Electronics
Keystone 2
• Electric Motors
Keystone 3
• Traction Drive System
Stator cooling
jacket
Stator end winding
Rotor
Stator
Photo Credit: Kevin Bennion, NREL
[1] U.S. DRIVE. 2017. Electrical and Electronics Technical Team Roadmap.
https://www.energy.gov/sites/default/files/2017/11/f39/EETT%20Roadmap%2010-27-17.pdf.
• Research enabling compact, reliable, and efficient electric
machines
o Motor 10x power density increase (2025 versus 2015 targets) [1]
o Motor 2x increase in lifetime [1]
o Motor 53% cost reduction (2025 versus 2015 targets) [1]
4. NREL | 4
Relevance
U.S. DRIVE. 2017. Electrical and Electronics Technical Team Roadmap.
https://www.energy.gov/sites/default/files/2017/11/f39/EETT%20Roadmap%2010-27-17.pdf.
• Material conductivity thermally
drives the amount of material
necessary to create the
required magnetic field to
create mechanical power
• Material performance
characterization techniques are
not well known or identified in
the literature
• It is important to reduce the
thermal resistance of the motor
packaging stack-up to help
increase the power density.
Electric Drive Motor R&D Areas
5. NREL | 5
Milestones
Date Description
December 2020
(Complete)
Prepare experimental setup for motor subcomponent (motorette)
thermal measurements
March 2021
(Complete)
Complete measurements of SNL-provided motor material
samples
June 2021
(Complete)
Prepare and thermally characterize motorette structures for
thermal performance characterization in support of motor
thermal management efforts with consortium collaborators
September 2021
(In Progress)
Prepare report on research results.
6. NREL | 6
Approach
Material and Interface Thermal and
Mechanical Characterization
Motor System Thermal Analysis Support
Photo Credits:
a: Doug DeVoto, NREL
b: Kevin Bennion, NREL
a
b
Electric Drive Technologies Consortium Team Members
NREL-Led Thermal Management Research
7. NREL | 7
Approach
Material and Interface Thermal and Mechanical Characterization
• Collaboration with Sandia National Laboratories (ELT216)
– Support mechanical and thermal measurements of new motor materials
• Collaboration with Ames Laboratory (ELT215, ELT234)
– Support thermal analysis of electric machines enabled by material innovations
• NREL Motor Material and Interface Characterization
o Bulk property measurements of slot-liner materials (50°C–200°C)
o Thermal contact resistance measurements between unbonded interfaces (50°C–
200°C)
Photo Credit: Emily Cousineau, NREL
Setup for material and interface
characterization up to 200°C
8. NREL | 8
Technical Accomplishments and Progress
Sample from SNL undergoing testing.
Photo Credit: Emily Cousineau, NREL
Collaboration with Sandia National Laboratories
(ELT216)
• Support mechanical and thermal measurements of
new motor materials
Iron nitride-filled
samples show ~7.5x
higher thermal
conductivity at ~45°C
relative to unfilled base
epoxy samples.
9. NREL | 9
Approach
Motor System Thermal Analysis Support
• Collaboration with University of Wisconsin (ELT243)
o NREL providing technical support, thermal data, and material information to
support integrated cooling of motor and power electronics.
• Collaboration with Georgia Tech to support research efforts at Georgia
Tech for advanced convective heat-transfer technologies for electric
machines (ELT251)
o NREL providing technical support, geometry data, thermal modeling data, and
experimental data to support evaluations of advanced cooling impacts
o NREL and Georgia Tech completed experiments of motor subcomponent
(motorette) thermal characterization
• Collaboration with ORNL to support motor thermal analysis and thermal
design of advanced machine design led by ORNL (ELT212)
o Providing thermal design support to support iterative electric machine design
process led by ORNL
• Collaboration with Keystone 3 project areas at ORNL (ELT221) and NREL
(ELT217).
Photo Credit: Sebastien Sequeira,
Georgia Tech and NREL
10. NREL | 10
Technical Accomplishments and Progress
Georgia Institute of
Technology
Motor Research
(ELT251)
Collaboration with Georgia Tech
1. NREL providing technical support,
geometry data, thermal modeling data,
and experimental data to support
evaluations of advanced cooling
impacts
2. Experiments of motor subcomponent
(motorette) thermal characterization
performed with Georgia Tech at NREL. Photo Credit: Sebastien Sequeira,
Georgia Tech and NREL
11. NREL | 11
Technical Accomplishments and Progress
Collaboration with Georgia Tech
• Reference motor
– Nissan Leaf motor
• Design
– U-shape end-winding channel in two parts fixed to
the housing
• Manufacturing
– 3D-printing process at NREL
• Material
– ULTEM 9085
– Maximum operating temperature: 153°C
– Thermal conductivity at 100°C: 0.25 W/m·K
• Silicone compound to improve thermal contact between
channel and end winding
– Thermal conductivity: 3.5 W/m·K
End-cap
Inlet
Outlet
Separation wall
End-windings
Water-jacket
Laminations
Channel cavity
Silicone compound
Photo Credit: Sebastien Sequeira,
Georgia Tech and NREL
12. NREL | 12
Technical Accomplishments and Progress
Percent decrease in temperature relative to baseline stator cooling
jacket at each flow rate (L/min) in the stator water jacket (“WJ”) and
the end-winding cooler (“C”).
Thermocouple locations on end winding
Photo Credit: Sebastien Sequeira,
Georgia Tech and NREL
13. NREL | 13
Technical Accomplishments and Progress
ORNL
Non-Heavy-Rare-
Earth High-Speed
Motors
ELT212
Motor Thermal Analysis and Design
(NREL)
1. Quantify impacts and trade-offs of
alternative material selections
• Potting materials
• Lamination materials
2. Quantify active cooling performance
requirements to mitigate critical hot
spots and operating conditions
• Cooling location
• Heat transfer coefficient
3. Quantify impacts and trade-offs of
alternative motor geometry
• Winding and stator geometry.
Materials, Geometry, Heat
Loads, and Temperature Limits
Thermal analysis trade-off studies
14. NREL | 14
Technical Accomplishments and Progress
Electromagnetic, Mechanical, and Thermal Design
Electromagnetic design
Loss evaluation
Mechanical assembly design
Permanent magnet
eddy current loss
AC loss in Litz
wire winding
Thermal modeling
Cooling design
Slot heat
exchanger
ELT212 ORNL ELT214 NREL
15. NREL | 15
Technical Accomplishments and Progress
Outer Rotor Motor Description
• Design led by ORNL
• Maximum rated speed 20,000 rpm
o 55-kW continuous power
o 100-kW peak power
• NREL supporting thermal analysis and design research.
Rotor
Stator
Case
Bearings
16. NREL | 16
Technical Accomplishments and Progress
Model Materials
410 SS
Al6061-T6
Nd magnets
Lamination steel
Wire bundles
Air gap
Ball bearings
slice
Air gap
Aluminum
Slot liner
(Nomex)
G11
17. NREL | 17
Technical Accomplishments and Progress
Cooling Approach
o Multiple approaches for machine cooling
o Interior cooling of the stator
o In-slot cooling for winding and stator teeth
o High-performance potting compound
o Extended slot heat exchanger
ORNL motor winding temperature versus heat
transfer coefficient.
ORNL motor cooling approaches.
ORNL motor temperatures with Powercore020 laminations
and expanded slot heat exchanger.
Maximum Temperatures
• Magnets: 122°C
• Stator: 162°C
• Windings: 151°C
18. NREL | 18
Technical Accomplishments and Progress
Slot Cooling Analysis
Preliminary computational fluid dynamics (CFD)
simulation showing areas for improved fluid flow.
Inlet
Outlet
Heat exchanger boundary conditions separated into
three sections (A, B, and C) based on heat loads into
each area.
In-slot heat exchanger with inlet/outlet region (for
development of flow profile)
19. NREL | 19
Responses to Previous Year Reviewers’ Comments
• One prior reviewer comment mentioned it is not clear that there are significant new technologies or
approaches proposed
o We included more information specific to work with project collaborators in the presentation materials for this
year.
• One prior reviewer mentioned the novelty of the work done—especially in comparison to the state of
the art—needs to be emphasized and clarified
o We included some results of experimental data compared against a baseline water jacket cooled system for
one of the technologies with Georgia Tech.
• One reviewer previously pointed out that the aims of the project are timely, needed, and well defined.
The project has a strong collaboration with external partners.
20. NREL | 20
Collaboration and Coordination
• Other Government Laboratories
o ORNL
— NREL collaborating on electric motor design efforts led by ORNL
— NREL supporting thermal modeling and simulation analysis for motor and material performance trade-off studies
o SNL
— NREL supporting material thermal and mechanical property measurements for material research efforts led by
SNL
o Ames Laboratory
— NREL continuing discussions with Ames to support material characterization efforts led by Ames Laboratory and
potential impacts related to motor thermal management
• Universities
o Georgia Institute of Technology
— NREL collaborating with Georgia Tech to support research efforts for advanced convective heat transfer
technologies for electric machines
— NREL providing technical support, geometry data, thermal modeling data, and experimental data to support
evaluations of advanced cooling impacts
— NREL and Georgia Tech completed experiments of motor subcomponent (motorette) thermal characterization
o University of Wisconsin Madison
— NREL providing technical support, thermal data, and material information to support integrated cooling of motor
and power electronics.
21. NREL | 21
Material and Interface Thermal and
Mechanical Characterization
• Methods to quantify thermal interfaces and
materials with reduced uncertainty
• Reliability measurements of interfaces to
support increased lifetime targets
Motor System Thermal Analysis Support
• Experimental validation of cooling
approaches to support hot-spot cooling
within electric motor design with ORNL
NREL-Led Thermal Management Research
Remaining Challenges and Barriers
Electric Drive Technologies Consortium Team Members
22. NREL | 22
• FY21
o In support of ORNL, complete CFD analysis of proposed heat exchanger design and prepare
design for experimental characterization.
o In support of SNL:
o Explore methods to reduce uncertainty in thermal conductivity measurements of filled-epoxy
samples
o Prepare for mechanical property tests of additional SNL material samples.
o Continue discussions with Ames Laboratory and other consortium partners to support material
characterization efforts led by Ames Laboratory and potential impacts related to motor thermal
management.
o Support Georgia Tech in efforts to publish motor thermal management research results.
o Continue meetings and discussions with University of Wisconsin Madison to provide technical
support, thermal data, and material information to support integrated cooling of motor and power
electronics.
Proposed Future Research
Any proposed future work is subject to change based on funding levels.
23. NREL | 23
• FY22
o In collaboration with ORNL, build cooling prototype to verify expected cooling performance in
relation to the Non-Heavy-Rare-Earth High-Speed Motors research effort led by ORNL
o Continue support with laboratory partners (SNL and Ames) to support material characterization
efforts led by Ames Laboratory and potential impacts related to motor thermal management
o Continue thermal analysis support for university-led research efforts at Georgia Tech and the
University of Wisconsin
o Support motor material and interface thermal and reliability characterization efforts
—Bonded interface thermal contact resistance (50°C–200°C)
—Bulk property measurements of slot-liner materials (50°C–200°C)
—Thermal contact resistance measurements between unbonded interfaces (50°C–200°C)
Proposed Future Research
Any proposed future work is subject to change based on funding levels.
24. NREL | 24
Summary
Relevance
• Supports research enabling compact, reliable, low-cost, and efficient electric machines aligned with Roadmap research areas
Approach/Strategy
• Engage in collaborations with motor design experts and component suppliers within industry
• Collaborate with ORNL, Ames, and SNL to provide motor thermal analysis support, reliability evaluation, and material
measurements on related motor research at national laboratories
• Collaborate with university partners including Georgia Tech and University of Wisconsin Madison to support university-led
motor thermal management research efforts
• Develop and document thermal and mechanical characterization methods of material and interface properties
Technical Accomplishments
• NREL collaborating with SNL to support mechanical and thermal measurements of new motor materials
• NREL providing thermal design support for iterative electric machine design process led by ORNL
• NREL completed motor subcomponent (motorette) experimental evaluations at NREL in collaboration with Georgia Tech
Collaborations
• Oak Ridge National Laboratory
• Ames Laboratory
• Sandia National Laboratories
• Georgia Institute of Technology
• University of Wisconsin
25. www.nrel.gov
Thank You
This work was authored by the National Renewable Energy Laboratory, operated by Alliance for
Sustainable Energy, LLC, for the U.S. Department of Energy (DOE) under Contract No. DE-AC36-
08GO28308. Funding provided by U.S. Department of Energy Office of Energy Efficiency and Renewable
Energy Vehicle Technologies Office. The views expressed in the article do not necessarily represent the
views of the DOE or the U.S. Government. The U.S. Government retains and the publisher, by accepting
the article for publication, acknowledges that the U.S. Government retains a nonexclusive, paid-up,
irrevocable, worldwide license to publish or reproduce the published form of this work, or allow others to do
so, for U.S. Government purposes.
Acknowledgments
Susan Rogers, U.S. Department of Energy
NREL EDT Task Leader
Sreekant Narumanchi
Sreekant.Narumanchi@nrel.gov
Phone: 303-275-4062
Team Members
Emily Cousineau, Doug DeVoto, Xuhui Feng, Bidzina
Kekelia, Josh Major, Jeff Tomerlin (NREL)
Mostak Mohammad, Tsarafidy Raminosoa, Randy
Wiles (ORNL)
Iver Anderson, Matt Kramer (Ames Laboratory)
Todd Monson (SNL)
Sebastien Sequeira, Yogendra Joshi, Satish Kumar
(Georgia Institute of Technology)
Bulent Sarlioglu, Tom Johns (University of Wisconsin
- Madison)
For more information, contact:
Principal Investigator
Kevin Bennion
Kevin.Bennion@nrel.gov
Phone: 303-275-4447
NREL/PR-5400-79955
27. NREL | 27
Publications and Presentations
• K. Bennion, “Electric Motor Thermal Management,” 2020 DOE VTO Annual Report.
• T. Raminosoa, R. Wiles, J. E. Cousineau, K. Bennion, and J. Wilkins, “A High-Speed High-
Power-Density Non-Heavy Rare-Earth Permanent Magnet Traction Motor,” in 2020 IEEE
Energy Conversion Congress and Exposition (ECCE), Oct. 2020.
• S. Sequeira et al., “Validation and Parametric Investigations Using a Lumped Thermal
Parameter Model of an Internal Permanent Magnet Motor,” presented at the ASME 2020
International Technical Conference and Exhibition on Packaging and Integration of Electronic
and Photonic Microsystems, Dec. 2020.
• X. Feng, E. Cousineau, K. Bennion, G. Moreno, B. Kekelia, and S. Narumanchi, “Experimental
and numerical study of heat transfer characteristics of single-phase free-surface fan jet
impingement with automatic transmission fluid,” International Journal of Heat and Mass
Transfer, vol. 166, Feb. 2021.
28. NREL | 28
Critical Assumptions and Issues
• The wide variation in motor types and designs presents a challenge. The analysis and thermal
management technologies should be applicable to as many motor configurations as possible.
o For this reason, we are collaborating with research partners with expertise in electric motor design.
o Our work is applicable to various motor configurations.
• The variation in thermal loads in terms of location and magnitude for different operating conditions
presents a challenge.
o The variation in heat magnitude and location based on the operating conditions of the motor will require the
ability to evaluate the impact of thermal management technologies under multiple operating conditions.
• Proprietary thermal performance data and technologies will require methods for interacting with
original equipment manufacturers and suppliers with interests specific to product applications.
o We will work to overcome this challenge to support broad industry demand for data, analysis methods, and
experimental techniques to improve and better understand motor thermal management that can be applied
within industry to support product-specific needs.