presented by: mark fraysier richard jennings 11/28/2012
TRANSCRIPT
AC ACTIVE LOAD FINAL PRESENTATION
Presented by:Mark Fraysier
Richard Jennings11/28/2012
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
How we left EE 480Part # # Used Price for 1 of each ($) Price*#
Piccolo Experimenter Kit TMDSDOCK28035 1 130 130Heat Sink (DC Chopper) 530002B02500G 1 1.71 1.71Heat Sinks (Converter) RA-T2X-51E-ND 6 2.55 15.3Switch (DC Chopper) AOT12N60 1 1.52 1.52Switches (Converter) IXFH30N50Q3 6 10.33 61.98Input Filter Inductor Core T650-26 3 30 90Input Filter Capacitor B32794D3126K 3 6.02 18.06AC Metering (Input Filter) CS5463 3 1.97 5.91Display Module NHD0420D3ZNSWBBW 1 18 18Drivers (all MOSFETs) FAN73711MXCT-ND 7 1.29 9.03PCB 1 1 100 100PCB 2 1 100 100PCB 3 1 100 100PCB 4 1 100 100Power Dump TMC50-.25-ND 80 3.66 292.8Heat Sinks (Power Dump) 091 Feet of Copper Wire (10 ga) 3 28.21 84.63Minor Component Estimation 1 1200 1200
GRAND TOTAL 2328.94
Summer Contributions Research of cost reduction Communication between group members
Reassured what our efforts would be during the beginning of EE 481
The Beginning of EE 481
The Reaction We met with Dr. Famouri Dr. Famouri suggested us to get rid of all
systems except AC Switches DC Chopper Microprocessor Drive Circuits Zero Crossing Detector Filters
This dramatically reduced the costs and complexity of the project
The New Parts ListPart # # Used Price for 1 of each ($) Price $
Microprocessor 296-31062-ND (DigiKey) 1 82.03 82.03 Note: This is the F28027 Experimenter KitHeat Sink (DC Chopper) 530002B02500G 1 1.71 1.71Heat Sinks (Converter) RA-T2X-51E-ND 6 2.55 15.3Switches (Converter) IXFH30N50Q3 8 10.33 82.64Input Filter Capacitor B32794D3126K 3 6.02 18.06DC Chopper Filter Capacitor P13837-ND (digikey) 10 2.74 27.40.8 mH Inductor CMT1-0.8-12L 3 0 0 Free Sample1.4 mH Inductor CMT1-1.4-12L 3 0 0 Free Sample2.5 mH Inductor CMT3-2.5-15L 1 0 0 Free Sample3 mH Inductor CMT3-3-12L 1 0 0 Free SampleDiodes (Drivers) 596-1352-5-ND 7 1.95 13.65Diodes (Zero-Crossing) DFLS130LDICT-ND 3 0.49 1.47Drivers (all MOSFETs) FAN73711MXCT-ND 7 1.29 9.038-pin Surfboard 6808CA-ND 1 2.34 2.34Pinless Surfboard 9081CA-ND 7 1.49 10.43Bread Board Sheet 438-1021-ND 1 45 45Thermostats 317-1014-ND 3 6.56 19.68Knobs 987-1276-ND 2 0.76 1.52Transformer 595-1206-ND 1 10.12 10.12Resistors: (ohm)
16500 RNF14FTD16K5CT 1 0.15 0.1568 7 0 0 Acquired in Lab
1.1 7 0 0 Acquired in Lab1000 3 0 0 Acquired in Lab
1.20E+06 7 0 0 Acquired in LabCapacitors:
0.1 uF BC2665CT-ND 6 0.37 2.221 uF BC2668CT-ND 1 0.94 0.94
22 uF 490-5387-ND 7 1.81 12.67Anti-corrosive goo 2 3.02 6.04Screws and Bolts Lowe's - 15 EstimatedAluminium Sheets Lowe's 2 20Wires 0 Taken from Various Supplies
TOTAL 362.4
Zero Detection Circuit
Drive Circuits
Bi-directional Converter
Input Filter
DC Chopper
Entire System Schematic
Software Design (See Microsoft Word Document)
Construction Process Printed Circuit Boards were removed from
our design This drastically increased the amount of
labor to construct the hardware Surfboards Assembly
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
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
Software Simulation
Simulation Parameters FSW=5 kHz
NOTE The simulation was done for maximum load
power with unity power factor
Simulation Results
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
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
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.
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
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
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
Any Questions?