Khaligh, Alireza

Alireza Khaligh

Associate Professor

Electrical and Computer Engineering

A. James Clark School of Engineering


Statement of energy interests and expertise: 

Alireza Khaligh is an Assistant Professor and Director of the Power Electronic, Energy Harvesting and Renewable Energies Laboratory (PEHREL) at the Electrical and Computer Engineering Department in the University of Maryland at College Park (UMCP). 

Dr. Khaligh’s major research interests include (a) modeling, analysis, design, and control of power electronic interfaces for plug-in electric vehicles, (b) energy harvesting from human and machine motion, (c) grid integration of renewable energy sources, and (d) smart grid.
Dr. Khaligh’s group has developed an integrated reduced-part 15kW level 2 charging interface for plug-in hybrid electric vehicles. This converter uses minimum number of circuit components offering a unique cost-effective solution. It is capable of operating with a wide single phase charging voltage range including 120/220/240 VAC. The results of the analysis verify that a power factor above 0.995 and a THD of 4.55% can be achieved in all operating modes such as charging, motoring, and regenerative braking.  
Dr. Khaligh’s research group is collaborating with Genovation Cars Inc. to investigate, propose, model and develop an actively controlled battery/ultra-capacitor system for G2 Electric Car. The goal is to decrease battery size and increase battery lifetime, while improving the efficiency of the vehicles through more efficient regenerative braking.
The research on grid-integration of plug-in electric vehicles and renewable energy systems is focused on developing high fidelity mathematical models of power market operations under various uncertainties to investigate the economic and environmental impact of PEV and wind energy penetration.  
The research on Biomechanical energy harvesting is being conducted on novel high power density, electromagnetic energy harvesting technologies. The research involves studying unique integrated power electronic interfaces capable of maximizing the extracted power over wide frequency ranges compatible with nonlinear human motions.