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INtegrated cooling for Efficiency (MACHINE)  \nDr. Jagadeesh Tangudu, Principal Investigator  \nRTX Technology Research Center  \n411 Silver Lane  \nEast Hartford, CT, 06108 [E-mail:](E-mail: jagadeesh.tangudu@rtx.com)[ ](E-mail: jagadeesh.tangudu@rtx.com)[jagadeesh.tangudu@rtx.com](E-mail: jagadeesh.tangudu@rtx.com)  \n[Susan A. Rogers](Susan A. Rogers), DOE Program Manager  \nU.S. Department of Energy Phone: (202) 586-8997  \nE-mail: [susan.rogers@ee.doe.gov](susan.rogers@ee.doe.gov)  \nStart Date: 10/01/2019 End Date: 06/30/2023  \nProject Funding (FY20): $599,611 DOE share: $479,689 Non-DOE share: $119,922  \nI.1 Project Introduction  \nRTX Technology Research Center (RTRC) is the central research and development (R&D) organization for RTX, and has extensive expertise in the design, modeling and analysis of highperformance electrical machines and thermal management for all its business units. The proposing team consists of researchers from RTRC and John Deere (JD), will be referred as “Team”. Each organization a has long track record of successful R&D of materials, manufacturing, components, and systems for energy efficiency applications. Motor power density and efficiency are limited by fundamental physical trade-offs between electromagnetics, thermal management, and structural design considerations. The team is proposing to utilize novel technologies and multi-physics design methods to develop a Motor with Advanced Concepts for High power density and INtegrated cooling for Efficiency (MACHINE), demonstrating an 8X improvement in power density.  \nI.2 Objectives  \nThe objective of the project is to demonstrate a high speed (>20,000 RPM) electrical machine using non-heavy rare earth hard magnets, high Silicon soft magnetic steel, and embedded in-slot cooling. To achieve this goal, as part of this seedling effort, the proposed plan to address three key aspects with specific objectives towards meeting the target requirements, a) Motor design: Preliminary electromagnetic design meeting target performance metrics. This includes motor design studies to identify key machine parameters such as machine topology, operating speeds, material selection, number of poles, and current density. These parameters are optimized based on optimal magnetic loading, electric loading, airgap shear stress, and heat removal capacity of the select cooling mechanism; b) Thermal Management: The thermal management task includes identifying the appropriate materials, manufacturing methods and quantifies effective heat  \nremoval capacity for a select flow rate and pressure drop. This shall provide inputs to the motor design tasks in terms of maximum heat loads and achievable current density, and thereby contribute to the target power density; and c) Build a sectional prototype: Since this is a seedling effort, the team proposes to build a sectional prototype (3-4 slots) with concentrated winding and in-slot cooling. Heat load is generated by exciting the coils with current at a given current density and quantify the heat removal capacity of the thermal management solution by measuring the inlet and outlet temperatures.  \nI.3 Approach  \nPermanent magnet machines are proven to have high power density and efficiency. There are mainly two types of permanent magnet machines: concentrated windings and distributed, which will both be explored. State-of-the-art motor drives impose a frequency limit, which sets the allowable maximum speed the motor can possibly achieve. Thus, the maximum frequency limit of the drive is proposed to be used here. The main difference between the two topologies is that the windings are wound around a tooth for concentrated windings while the other spans a certain number of teeth to make a return. The cooling channels are placed in ","cbCaifzfoqQvTqeP","https://ap.wps.com/l/cbCaifzfoqQvTqeP","pdf",1713974,23,"English","# Electrification - Final Progress Report\n## Project Introduction\n## Objectives\n## Approach\n## Modeling & Design","[{\"question\":\"What is the project described in the report?\",\"answer\":\"The report describes the electrification project developing the “MACHINE” motor with advanced concepts for high power density and integrated cooling.\"},{\"question\":\"What are the stated technical objectives?\",\"answer\":\"The project aims to demonstrate a high-speed (\\u003e20,000 RPM) electrical machine using non-heavy rare earth hard magnets, high-silicon soft magnetic steel, and embedded in-slot cooling.\"},{\"question\":\"How does the project plan to validate thermal performance?\",\"answer\":\"A sectional prototype (3–4 slots) will be built, coils will be excited at a given current density, and inlet/outlet temperatures will be measured to quantify heat removal capacity for the selected cooling solution.\"}]","Electrification - Final Progress Report | PDF",1789271879]