Mark Thorpe

1
Modular DC-AC Power Inverter
Mark Thorpe
mark.thorpe_at_student.utdallas.edu
Department of Electrical Engineering Erik Jonsson
School of Engineering Computer
Science University of Texas at Dallas Richardson,
Texas 75083-0688, U.S.A.
Project Goals
Project Results

• To design a modular DC-AC power inverter for
  alternative
• residential applications
• Connect several smaller inverters to get an
  output of 120 AC voltage
• and a power output of 1200 watts
• My objectives were to obtain a more power
  efficient and cost effective
• model than the original researched inverter

• Obtained a 60Hz sine wave at the output, which is
  needed for
• residential applications
• Successfully lit up an LED that represents a
  possible power using
• device in a household
• Switched to a less costly transistor, saving
  money on the overall
• design
• Simulated an output voltage of 120VAC
• Simulated an output power of 240 Watts

Project Overview

• Circuit Design
• The final circuit schematic included a LC filter
  which helped
• obtain a smooth sinusoidal output
• If I use a solar cell as the voltage source, I
  can then
• use the inverter for residential
  applications
• Organization
• The circuit was continually tested in PSpice and
  the lab

Project Conclusions/Outcomes

• The output frequency of the inverter is 60Hz
• The input voltage from the alternative energy
  source was registered
• at VIN 5.32 VDC
• The output voltage achieved for the individual
  prototype was registered
• at VOUT 120 VAC
• The output power was theoretically measured at
  240 Watts
• Our inverter circuit successful functionality was
  indicated by our LED
• lighting up as a load across CBooster
• By replacing the input voltage with a solar cell,
  the inverter can be
• applied for residential use
• Actual circuit is possibly more power efficient
• Actual circuit is possibly more cost effective