- Nicholas Professor
Main Office1122 Coover
Ames, IA 50011-3060
PhD, Electrical Engineering, University of Waterloo (1986)
MTech, Electrical Engineering, Indian Institute of Technology (1982)
BTech, Electrical Engineering, Jawaharlal Nehru Technological University (1979)
Power system security, voltage stability, wind and solar energy integration, real-time control of power and power electronics systems
Core Research Area: Electric power and energy systems
Strategic Plan Area: Energy infrastructure
Yang, Sheng and V. Ajjarapu. A Speed-Adaptive Reduced Order Observer for Sensorless Vector Control of Doubly-Fed Induction Generator-based Variable Speed Wind Turbines. IEEE Transactions on Energy Conversion , 2010, (forthcoming).
Konopinski, R. J., P. Vijayan, and V. Ajjarapu. Extended Reactive Capability of DFIG Wind Parks for Enhanced System Performance. IEEE Trans. Power Systems 24, no. 3, (2009): 1346,1355.
Zhang, Bai Hua Pei and V. Ajjarapu. A Novel Parameter Identification Approach via Hybrid Learning for Aggregated Load Modeling. IEEE Transactions on Power Systems 24, no. 3, (2009): 1145,1154.
Konopinski, R. J., P. Vijayan, and V. Ajjarapu. Extended Reactive Capability of DFIG Wind Parks for Enhanced System Performance. IEEE Transactions on Power Systems 24, no. 3, (2009): 1346,1355.
Song, H., B. Lee, and V. Ajjarapu. Determination of Control Strategies Against Undesired Zone 3 Relay Operation With Respect to Voltage Collapse. IET Generation Transmission and Distribution 3, no. 2, (2009): 164,172.