1 / 27

AC Active Load: Testing Equipment Efficiency Analysis and Construction Progress

Presented by Mark Fraysier & Richard Jennings on 11/28/2012, this presentation recaps the concept of AC Active Load - a device for testing three-phase machinery efficiency. It involves manipulating the power triangle to analyze machine performance. The discussion also covers contributions made during the EE 480 summer, the beginning of the EE 481 project, construction progress, software simulation, drive circuits testing results, safety precautions, reflections, and advice for future endeavors. The project aims to create a user-friendly device with potential for further development. For more details, refer to the Microsoft Word document provided.

marsden-duffy
Télécharger la présentation

AC Active Load: Testing Equipment Efficiency Analysis and Construction Progress

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. AC Active Load Final Presentation Presented by: Mark Fraysier Richard Jennings 11/28/2012

  2. Recap: What is the AC Active Load? • Testing equipment device for three-phase devices • Analyzes how efficiently machines operate using desired, created load. • Done by manipulating the power triangle

  3. How we left EE 480

  4. Summer Contributions • Research of cost reduction • Communication between group members • Reassured what our efforts would be during the beginning of EE 481

  5. The Beginning of EE 481

  6. The Reaction • We met with Dr. Famouri • Dr. Famouri suggested us to get rid of all systems except • AC Switches • DC Chopper • Microprocessor • Drive Circuits • Zero Crossing Detector • Filters • This dramatically reduced the costs and complexity of the project

  7. The New Parts List

  8. Zero Detection Circuit

  9. Drive Circuits

  10. Bi-directional Converter

  11. Input Filter

  12. DC Chopper

  13. Entire System Schematic

  14. Software Design • (See Microsoft Word Document)

  15. Construction Process • Printed Circuit Boards were removed from our design • This drastically increased the amount of labor to construct the hardware • Surfboards • Assembly

  16. Design Achievements • We completed nearly all hardware construction of the system as designed • With + or – 10% tolerance • The seven drive circuits were tested and operated correctly • We ran out of time to do the software

  17. Demonstration of AC Active Load • We will attempt to manually generate our own pulse width modulation using lab supplies • No microprocessor • No zero crossing circuit • No knobs

  18. Software Simulation

  19. Simulation Parameters • FSW=5 kHz • NOTE • The simulation was done for maximum load power with unity power factor

  20. Simulation Results

  21. Simulation Conclusions • From the graph we determine that this load would work well with the generator • However, the simulation does not include the effects of switching losses • We must build the hardware to demonstrate switching losses • Still, the simulation provides useful information about the system

  22. Drive Circuits Test Results • The Drive Circuits functioned properly during independent testing. • However, the turn-on rate for the MOSFETs appears to be insufficient for proper operation at 10 kHz. • This may be remedied by adjusting component values in the Drive Circuits

  23. Safety Precautions • An external housing would greatly improve the safety of the system. • Proper design of the system makes failure unlikely, however operator misuse could result in injury or death due to electrocution.

  24. Reflections • Lack of proper communication with our mentor resulted in a lot of wasted time • Wasted time resulted in our failure to have software operational • We will test the system over the next several days using our own created PWM • We won’t know the final results of the entire system performance until then

  25. Advice for Future AC Active Load Senior Design Endeavors • Have 4 group members • 2 Electrical Engineers • 1 Computer Engineer • 1 Computer Scientist • The computer engineer and computer scientist work on the software while the electrical engineers work on the hardware • Include the automatic feedback and include a simple user friendly GUI

  26. Potential Development of Project • Incorporate externalized elements to create independently functional device • Meters • Display • Power supply • Power dump • Add canceled features back into the system • Computer interface • Battery back-up • Internal memory

  27. Any Questions?

More Related