1 / 12

Attributes of the LaunchPoint motor:

High Efficiency, High Power Density Electric Motors Mike Ricci Vice President, Engineering mricci@launchpnt.com. Attributes of the LaunchPoint motor:. A brushless permanent magnet motor/generator Axial flux configuration (pancake shape)

amena-morrow
Télécharger la présentation

Attributes of the LaunchPoint motor:

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. High Efficiency, High Power Density Electric MotorsMike RicciVice President, Engineeringmricci@launchpnt.com

  2. Attributes of the LaunchPoint motor: • A brushless permanent magnet motor/generator • Axial flux configuration (pancake shape) • Allows for smaller gaps, higher efficiency than a radial configuration • Deflection from centrifugal forces and CTE mismatches are parallel to gap • Uses two Halbach arrays • Halbach arrays concentrate magnetic field without using iron • Optimized pole count to maximize field in gap, typically ~90% of Br • Highly efficient • Halbach arrays generate a field of >1 tesla in the gap • Litz wire results in very low copper eddy current losses • There is no iron: no hysteresis or iron eddy current losses • Lightweight • Carbon fiber can be used in place of iron for structure • The motor is magnet, copper, carbon fiber – each ideal for its purpose

  3. Motor Components Carbon fiber backing plate Impeller ring pulls air over winding for cooling Carbon fiber spokes Three phase, litz wire winding Halbach array

  4. Halbach arrays are a key enabler A Halbach array is an arrangement of magnets: The field is concentrated on this side The field is cancelled on this side The dual Halbach array has a much stronger field for a given size and weight:

  5. The best balance for your applications… There is a tradeoff between: Power Efficiency Lightweight The LaunchPoint design offers the best performance: For a given power and efficiency requirement, it will provide the lightest weight motor possible efficiency power lightweight The LaunchPoint motor is powerful, efficient and lightweight

  6. DARPA UAV Motor Motor performance: 7 horsepower @ 8400 rpm 1.4 pounds 95% efficient at 7 hp, 8400 rpm 5 hp/lb 6” diameter Developed under an SBIR Phase I grant Target application is an electric powered, ducted fan UAV This performance is unrivaled No other motor has 5 hp/lb at 8400 rpm while maintaining 95% efficiency

  7. Hardware validation of models • Analytical model developed, validated • Optimizes thermal, fluid dynamics, electro-magnetic • Winding tooling has been developed • Halbach array assembly tooling developed • Thermal design has been tested and validated • First motor has been completed and is in testing • Initial preliminary results continue to validate models

  8. The design can be scaled up Carbon fiber backing plate Impeller ring pulls air over winding for cooling Carbon fiber spokes Three phase, litz wire winding Halbach array • A larger motor suitable for the DARPA Transformer program: • 18” diameter • 15 kilograms • 97% efficient at 150 hp, 3500 rpm • 97% efficient at 100 hp, 2700 rpm • Capable of up to 5 hp/lb

  9. Motors can be stacked up Rotating components: Stationary components: In this configuration, the stator is held from the outside

  10. DARPA Vulture program Aurora concept Boeing concept Lockheed Martin concept Optimized for efficiency and weight at very low shaft speeds

  11. Other well suited applications • Electric aircraft propulsion: • Solar • Fuel cells • Battery • VTOL hybrid • Ducted fan UAVs • As a generator for: • Auxiliary, environmental power • Solid state directed energy • Starter motor/alternator

  12. Call today to discuss your application! Mike Ricci Vice President, Engineering mricci@launchpnt.com (805) 683-9659 x244

More Related