Masters Theses

Keywords and Phrases

Inverters; Power Electronics


"In this thesis, three cases of power electronic inverters are taken into consideration to analyze their performance in terms of total harmonic distortion in their output voltage and output current. Firstly, a single H-bridge inverter is simulated. Staircase switching technique is used to generate the gating pulses for the switches. Only one switch is made to toggle for every half cycle. The fundamental harmonic component of the desired output voltage is considered to be 120 V. Secondly, the same topology is used with a Bipolar PWM gating technique. The switching frequency of the carrier wave is 33*60 Hz. Thirdly, a multilevel H-bridge inverter is designed by connecting two H-bridge cells in series - one H-bridge cell with a DC source (main H-bridge inverter) and other with a capacitor (auxiliary inverter). The capacitor voltage regulation method is also proposed to control the voltage of the capacitor. Finally, FFT analysis is performed to understand the total harmonic distortion of output current and output voltage of all the three cases. A comparison study is made between all the three inverters' total harmonic distortion of their output current by keeping the load inductor value as constant and vice versa. Cost, size, no. of components used and design level factors are also taken into consideration to compare the inverters."--Abstract, page iii.


Ferdowsi, Mehdi

Committee Member(s)

Shamsi, Pourya
Joo, Dr. Jhi-Young


Electrical and Computer Engineering

Degree Name

M.S. in Electrical Engineering


Missouri University of Science and Technology

Publication Date

Summer 2015


ix, 40 pages

Note about bibliography

Includes bibliographical references (pages 36-39).


© 2015 Paterrson Thomas, All rights reserved.

Document Type

Thesis - Open Access

File Type




Subject Headings

Electric inverters
Power Electronics
Electric distortion
Harmonics (Electric waves)

Thesis Number

T 10743

Electronic OCLC #