Susan Shanshan Bian (Susan)
Degree: Ph.D
Starting Date: Sep, 2008
Research Title:

A Study of the Properties of Nano-composites Developed by Electro-spinning

  Project Description:

Nano-fillers dispersion by electro-spinning is a new emerging technology under research in this project. The goal is to overcome the agglomeration problem associated with nano-fillers dispersion in polymeric materials. The existing nano-filler dispersion methods have their limitations. Some methods like conventional mechanical mixings are easy but not very efficient and some methods like chemical modifications of nano-filler are effective but very hard to popularize because most of chemical agent works only for a specific nano-filler and it is hard to select and control the optimum volume of the chemical agent. Electro-spinning has been investigated for dispersing nano-silica into silicone rubber polymer in this research. The improved nano-filler dispersion and enhanced thermal, mechanical properties confirmed the feasibility of using electro-spinning as a novel method to reduce nano-filler agglomeration. Electro-spinning is a simple and easy process. It uses electrical forces and high shear force which is produced during the stretch of thin nano-fibers to separate the nano-fillers; therefore, many limitations for the existing mixing methods no longer exist with electro-spinning dispersion technique. Different nano-fillers and base polymers will be studied to see the potential application of this new method.

  HVEL from my perspective:

High voltage Engineering Lab (HVEL) is the leading research and teaching laboratory in the North America. It is involved in many prominent and most talked about research fields, such as material improvement, nano-dielectrics, power electronics etc. HVEL facilitates students with various high-tech equipments. All students at HVEL are directly supervised by Professor Shesha Jayaram and Professor Edward Cherney who are world renowned experts in the field of High Voltage Engineering and Material Sciences. Students get innumerable opportunities to cooperate with leading companies and other university groups on mutual interests.

  Email: s2bian@uwaterloo.ca (s2bian@uwaterloo.ca)
   
Ahmed Gad
Degree: Ph.D
Starting Date: May 2010
Research Title:

Food Preservation Using Pulsed Electric Fields.

  Project Description:

The use of pulsed electric fields (PEFs) is an alternative way for liquid food preservation rather than conventional thermal pasteurization. This method has the advantage of retaining the heat-sensitive compounds originally found in the liquid food itself, and hence improving both nutrition and sensory aspects. However, during the PEF treatment, some undesirable electrochemical reactions might take place at the electrodes leading to metal release into the food. Consequently, some metal ions may be present in the treated food affecting both the quality and sensory aspects. Further, the electric field distribution may be affected, and the electrodes life time is reduced. This research work aims to minimize these electrode reactions.

  HVEL from my perspective:

HVEL creates the research environment where knowledge and experience could be reinforced.

  Email: agad@engmail.uwaterloo.ca (agad@uwaterloo.ca)
   
Refat Refat Atef Ghunem
Degree: Ph.D
Starting Date: Sep, 2010
Research Title:

HVDC Polymeric Insulators.

Project Description:

This research work deals with aging performance of polymeric materials, in contaminated conditions, for DC insulation applications.

  HVEL from my perspective:

HVEL at the University of Waterloo is a state-of-the-art research facility where effective tools are offered, covering wide spectrum of research areas. Besides, the professional and cosmopolitan environment in the HVEL at the University of Waterloo allows the exposure to well-known expertise which supports the research process and cream-of-the-crop students from multidisciplinary technical backgrounds and international cultures.

  Email: rghunem@uwaterloo.ca (rghunem@uwaterloo.ca)
     
Saleh Mohammad Saleh Moonesan
Degree: Ph.D
Starting Date: Sep, 2011
Research Title:

IGBT Based High Voltage Pulsed Generator.

Project Description:

Design and implementation of a pulsed power generator to generate PWM high voltage waveform (20 kV 3 kHz PWM/Square waveform) for motor coil insulation test and also pulsed waveform for pulsed electric (PEF) liquid food treatment.

  HVEL from my perspective:

When I saw lightning at very young age I was scared. It was terrifying indeed. But now fear has turned into excitement. I began my high voltage journey from University of Tehran's High Voltage Lab as an undergraduate student. I continued my graduate studies here at University of Waterloo's High Voltage Engineering Lab which has one of the best research and development facilities for high voltage engineering and quite well number of research is in progress on a very wide spectrum.

  Email: msmoonesan@uwaterloo.ca (msmoonesan@uwaterloo.ca)
     
Saleh Mahdi Khanali
Degree: Ph.D
Starting Date: Sep, 2011
Research Title:

TBD

Project Description:

TBD

  HVEL from my perspective:

I joined HVEL to get involved in the most advanced research and development process. At HVEL there is ample opportunity to perform novel experiments with accurate and high-tech equipments. It is one of the few facilities which is fully capable of meeting all the R&D requirements in the field of High Voltage Engineering. Working here under the supervision of Dr. Shesha Jayaram and Dr. Edward Cherney, who are well known experts in the field of high voltage engineering, is all together a experience of its kind.

  Email: mkhanali@uwaterloo.ca (mkhanali@uwaterloo.ca)
     
Saleh Utkarsh Patel
Degree: M.A.Sc
Starting Date: May, 2010
Research Title:

Analysis of the Power System Harmonics Impact on the Stress Grading Layer of the Cable Termination.

Project Description:

There is a potential presence of amplified harmonic components in the power network grid when the resonant frequencies align with the harmonic frequencies that are being injected by power electronic components of the distributed generation (DG). The threat of an unacceptable total harmonic distortion (THD) could significantly enhance the electrical stresses on the insulation system of the power system components including cable terminations. The overall aim of the project is to conduct the ageing analysis of the cable termination under distorted voltage waveform and evaluate the termination insulation quality. Diagnostic techniques such as partial discharge detection, surface potential distribution measurements, surface temperature monitoring, and loss factor measurements serves to analyze the termination insulation. Simulation using COMSOL Multiphysics 3.5 is conducted for verification of the experimental results.

  HVEL from my perspective:

My primary motivation for joining the HVEL is my sixth four-month co-operative term at the HVEL as an undergraduate research associate. The short experience I gained working with the research students, lab instructor, and supervisor was unique, challenging, and exciting at the same time. A glimpse into the research and HVEL graduate student life was enough motivation to join the HVEL team as a master student. The research facility is fantastic especially for the insulation study. The diagnostic tools that I have used on a regular basis for my research work are PD detector, tan delta bridge, electrostatic voltmeter, IR camera, impedance analyzer, and electrometer.

  Email: patelutkarsh87@gmail.com (patelutkarsh87@gmail.com)