Contact

Faisal Khan, Ph.D.
3108 MEB
50 S Central Campus Dr
Salt Lake City, UT 84112-9206

(801) 581-6507

faisal.khan@utah.edu

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PEARL Team Members

Faculty

Marc Bodson
Faisal Khan

PhD Students

Mohammed Khorshed Alam

Email: khorshed.alam@utah.edu
A multijunction solar cell can extract higher solar energy compared to a single junction cell by splitting the solar spectrum. Although extensive research on solar cell efficiency enhancement is in place, there are limited research materials to identify the optimum interconnection method and necessary power electronics solutions for multijunction solar cell systems. Multijunction solar cells could be categorized into two main categories: vertical multijunction (VMJ) solar cell and lateral multijunction (LMJ) solar cell. My goal is to identify the optimum interconnection method for various multijunction solar cells.

Abusaleh Imtiaz

Email: as.imtiaz@utah.edu
Future hybrid-electric and all-electric cars will use lithium-ion cells as their battery. Due to the inherent internal discrepancy in capacities, these cells are not charged or discharged equally in long series-connected battery packs. Equalization of these cell's voltages is very important to ensure long life of the pack. The existing equalizer circuits are complex and expensive to implement in the real world. My goal is to find a novel, economical circuit for cell equalization.

Most. Sultana Nasrin

Email: sultana.nasrin@utah.edu
Power converters are widely used in industrial manufacturing process, and the uninterrupted operation of those converters is critical. Functionality and performance of a power converter degrades with time, and the degradation rate depends on several associated factors such as any overload, ambient temperature, connected load types, and so on. Power converters are periodically replaced, but without identifying the remaining life of the aged converter. I am working on developing a method to identify the overall state of health of power converters.

MS Students

Brandt Hammer

Email: dancingveggie@gmail.com

Jesse Smith

Email: jeasmith@gmail.com

Rui Zhang

Email: ruizhang.peking@gmail.com
There is great potential for self-exciting induction generator (SEIG) for residential applications. The challenge is to set up the generator system with low cost, reliability and security, and quality output voltage. Our research focus is on single-phase self-excitating induction generators and related converter circuits. The goal is to find an efficient method to control the output voltage and frequency of the SEIG for residental application. In this process, the theory of self excitation needs to be analyzed and the methods of voltage and frequency control need to be explored. The whole work includes theory analysis, simulation and experimental validation.

Past Members

PhD Students

Scott Pigg

My reseach is concerned with the development of new adaptive algorithms for the rejection of periodic disturbances. Of particular interest are issues encountered in active noise and vibration control (ANVC) applications. In many such appliactions, the disturbance is only known through a measurement at the output of the plant, requiring a pure feedback solution. Since the spectrum of the disturbance or the parameters of the system are oftentimes either unknown or may change significantly with time, this research is concerned with developing algorithms capable of rejecting disturbances of unknown/time-varying frequency acting on unknown/time-varying systems.

MS Students

Max Myers

Single-phase induction motors are one of the most ubiquitous type of electric machine. To this day, efforts to use these machines as generators has been hampered by these machine's inherent instability and nonlinearity. The focus of my work is to develop a method to control the voltage and frequency of a single-phase induction generator. This is done using a small-signal voltage applied to the auxillary winding.