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Transformer Training Board Power Supply. Advisor: Dr. Michael Mazzola Team Members: Gary Hutson, James Roberts, James Jackson, and Kenny Beverin. Team Members. Gary Hutson. James Roberts. James Jackson. Kenny Beverin. Team Responsibilities. Gary Hutson Web Designer Rectifier Circuit

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transformer training board power supply
Transformer Training BoardPower Supply

Advisor: Dr. Michael Mazzola

Team Members: Gary Hutson, James Roberts, James Jackson, and Kenny Beverin

team members
Team Members

Gary Hutson

James Roberts

James Jackson

Kenny Beverin

team responsibilities
Team Responsibilities

Gary Hutson

Web Designer

Rectifier Circuit

DC-AC Inverter

James Roberts

Research

DC-AC Inverter

PSpice

Kenny Beverin

Stock Market Manager

Executive Summary

PWM Controller

James Jackson

Documentation

References

Design Requirements

purpose
Purpose

To build a Power Supply that produces the desired output and is:

  • Light weight
  • Small
  • Durable
  • Quiet
design requirements
Design Requirements
  • The 3-phase output voltage THD should

be limited to 5%.

  • The phase to phase voltage should be limited to 43 volts +/- .5 volts
  • The weight limit is 20 pounds.
  • The size should be 12’’ cubed.
rectifier simulated unfiltered
Rectifier (Simulated Unfiltered)

Amplitude = 170V

Average = 108V

dc link filter
DC Link Filter

10% Ripple Voltage Filter values:

C = 91.7uF

L = 109.6mH

rectifier output actual filtered
Rectifier Output (Actual Filtered)

Ripple Voltage = 12.6 V

Peak Voltage = 165 V

% Ripple Voltage = 7.64

dc to dc converter
DC to DC Converter
  • Input from Filter

170V DC unregulated

  • Regulated Outputs
  • - (+24VDC) Control Power
          • PWM Power
          • Phase Shifter
          • Function Generator
          • DC Bias Circuit
  • - (~90VDC) Inverter Power
inverter
Inverter
  • ~90VDC to 43VAC
  • 3-Phase Half Bridge Topology
  • Power MOSFETs
  • PWM Controlled
controller selection
Controller Selection
  • Square Wave
  • Pulse-Width Modulation
function generator
Function Generator

Symmetry adjuster

  • Supplies a Sinusoidal Reference signal
  • ~ 3 Volts peak to peak

Amplitude adjuster

Sine shape adjuster

Resistor and capacitor for frequency adjust

reference signal offset
Reference Signal Offset

Signal from Function Generator

PWM Expected Signal

dc bias circuit
DC Bias Circuit

DC Bias Control

phase shifter simulated
Phase Shifter (Simulated)

Base signal - 0º

Shifts signal -120º

Shifts signal 120º

pwm circuit
PWM Circuit

Dead-time control resistors

PWM pulses

Timing capacitor and resistor to determine switching frequency

pwm isolation
PWM Isolation

An Isolation Relay will be used to isolate the PWM circuit from the Inverter Bridge

low pass filter and load
Low Pass Filter and Load

C = 1.5uF

Low Pass Filter

Artificial Load

future plans
Future Plans
  • Improve THD
  • Obtain desired Voltage
  • Package the product
  • Provide protection from over current
  • Provide thermal protection
acknowledgements
Acknowledgements
  • Dr. Mazzola for his continued support
  • Robert Cheney from Alabama Power
  • Roger D. Marcus from Alabama Power
slide35
Demo
  • The Unfiltered DC Voltage
  • Filtered DC Voltage
  • Function Generator
  • Phase Shifter
  • PWM Pulses and Control signal
  • Output
references
References

[1]   I. M.Gottlieb, Electronic Power Control, TAB Books, Blue Ridge Summit, PA, USA, 1991.

 [2]   B. Jayant Baliga, Modern Power Devices, John Wiley & Sons, New York, New York, USA, 1987.

 [3]   N. Mohan, Tore M. Undeland, and William P. Robbins, Power Electronics: Converters, Applications, and Design, John Wiley & Sons, New York, New York, USA, 1989.

 [4]   I. M. Gottlieb, Power Control with Solid State Devices, Reston Publishing Company, Inc., Reston, Virginia, USA, 1985.

 [5]   B. Norris, Microprocessors and Microcomputers and Switching Mode Power Supplies, McGraw-Hill Book Company, New York, New York, USA, 1978.

 [6]   B.W. Williams, Power Electronics: Devices, Drivers, and Applications, John Wiley & Sons, New York, New York, USA, 1987.

 [7]   B. K. Bose, Microcomputer Control of Power Electronics and Drives, IEEE Press, New York, New York, USA, 1987.

 [8]   K. Shenai, “Made-To-Order Power Electronics,” IEEE Spectrum, pp. 50-55, July 2000.

 [9] R. Neale, “’Tiny Switch’ Offers The Main Plug Integrated Power Supply,”

Electronic Engineering, pp. 51-52, October 1998.

references cont
References (cont.)

[10] B. Lin and H. Lu, “Single-Phase Three-Level Rectifier and Random PWM

Inverter Drives,” IEEE Transactions on Aerospace and Electronic Systems, vol.

35, no. 4, pp. 1334-1343, October 1999.

[11] H. Park, S. Park, J. Park, and C. Kim, “A Novel High-Performance Voltage

Regulator for Single-Phase AC Sources,“ IEEE Transactions on Industrial

Electronics, vol. 48, no. 3, pp. 554-562, June 2001.

[12] C. Lin and C. Chen, “Single-Wire Current-Share Paralleling of Current-Mode-

Controlled DC Power Supplies,“ IEEE Transactions on Industrial Electronics,

vol. 47, no. 4, pp. 780-786, August 2000.

 [13] B. Lin, “Analysis and Implementation of a Three-Level PWM

Rectifier/Inverter,“ IEEE Transactions on Aerospace and Electronic Systems,

vol. 36, no. 3, pp. 948-956, July 2000.

[14] J. Ghijselen, A. Vanden Bossche, and J. Melkebeek, “Dynamic Control of a

Fixed Pattern Rectifier,“ IEEE Transactions on Power Electronics, vol. 16, no.

1, pp. 118-124, January 2001.

references cont38
References (cont.)

[15] I. Schmidt, “Secure Power Supply System With Static Power Converters,” IEEE

1977 Int’l Semiconductor Power Conversion, pp. 222-223, Lake Buena Vista,

Florida, USA, March 1977.

 [16] K. Ishimatsu, “A DC-AC converter, using A Voltage Educational Type

Switched-Capacitor Transformer,” IEEE 13th Applied Power Electronics

Conference, pp. 603-606, Anaheim, California, USA, February 1998.

[17] R. W. Stokes, “High Voltage Transistor Inverters For A.C. Traction Drives,”

IEEE 1977 Int’L Semiconductor Power Conversion, pp. 270-294, Lake Buena

Vista, Florida, USA, March 1977.

[18] N. Mohan, T. Undeland, and W. Robbins, Power Electronics, Hemilton Printing

Company, New York, New York, USA. 1995.

 [19] K. Ross, “V68HC912B32 PWM Module”,http://www.seattlerobotics.org/

encoder/apr98/68hc12pwm.html, Encoder, The Newsletter of the Seattle

Robotics Society, Seattle, Washington, USA, April 1998.

[20] “Frequency Converter Overview”, http://www.majorpower.com/frequency/

overview.html, Majorpower.com, Champlain, New York, USA.