Doctoral Dissertations


Poria Fajri


"Vehicle electrification is considered to be the most promising approach toward addressing the concerns on climate change, sustainability, and rapid depletion of fossil fuel resources. As a result electric-drive vehicle (EDV) technology is becoming the subject of many research studies, from academia and research laboratories to automotive industries and their suppliers. However, a crucial step toward the success of EDV implementation is developing test platforms that closely emulate the behavior of these vehicles.

In this dissertation, a new approach for emulating an EDV system on a motor/dynamometer test bench is investigated. Two different methods of emulation are discussed which are based on predefined drive cycle and unpredictable driving behavior. MATLAB/Simulink is used to model the test bench and simulations are carried out for each case. Experimental test bench results are also presented to validate hardware-in-the-loop (HIL) real-time performance for each method.

Furthermore, to provide a more realistic approach towards EDV emulation a braking system suitable for motor/dynamometer architecture is proposed. The proposed brake controller represents a very close model of an actual EDV braking system and takes into account both regenerative and friction braking limitations.

Finally, the challenges and restrictions of using a full scale test bench are outlined. To overcome these limitations, the development of an educational small scale hybrid electric vehicle (HEV) learning module is discussed which provides an ideal test platform to simulate and study both electric and HEV powertrains"--Abstract, page iv.


Ferdowsi, Mehdi

Committee Member(s)

Kimball, Jonathan W.
Crow, Mariesa
Zawodniok, Maciej Jan, 1975-
Murray, Susan L.


Electrical and Computer Engineering

Degree Name

Ph. D. in Electrical Engineering


United States. Department of Energy


Support for this research was partially provided by the U.S. Department of Energy under grant DE-EE0002012.


Missouri University of Science and Technology

Publication Date


Journal article titles appearing in thesis/dissertation

  • Emulating on-road operating conditions for electric-drive propulsion systems
  • EV braking emulation using a hardware-in-the-loop (HIL) motor/dynamometer test bench
  • Development of an educational small-scale hybrid electric vehicle (HEV) setup


xii, 117 pages

Note about bibliography

Includes bibliographic references.


© 2014 Poria Fajri, All rights reserved.

Document Type

Dissertation - Open Access

File Type




Thesis Number

T 10994

Electronic OCLC #