Bakare, G.A.; Krost, G.; Venayagamoorthy, G.K. & Aliyu, U.O.
Differential Evolution Approach for Reactive Power Optimization of Nigerian Grid System
IEEE PES General Meeting, June 2007 Tampa, Florida, USA

Burges, K.; Bömer, J.; Brakelmann, H.; Brüggmann, J.; Erlich,I.; van de Sandt, R.; Jensen, H.; Carstensen H. & Grotlüschen, H.
Bipolar offshore networks of high capacity for collective wind farm connections
European Offshore Wind 2007 Conference and Exhibition, 2007

Bakare, G.A.; Krost, G.; Venayagamoorthy, G.K. & Aliyu, U.O.
Comparative Application of Differential Evolution and Particle Swarm Techniques to Reactive Power and Voltage Control
14th International Conference on Intelligent System Applications to Power Systems, November 2007 Kaohsiung, Taiwan PDF

Singh, S.N. & Erlich, I.
Bidding in the Electricity Markets
Electrical India, December 2007 Vol. 47 No. 12 pp. 48-62

Feltes, C.; Engelhardt, S.; Kretschmann, J.; Fortmann, J.; Koch, F. & Erlich I.
Overvoltage Ride-Through of DFIG based Offshore Wind Farms
European Offshore Wind 2007 Conference and Exhibition, 2007

Ackermann, T.; Abbad, J.R.; Dudurych, I.M.; Erlich, I.; Holttinen, H.; Kristoffersen, J.R. & Sorensen, P.E.
European Balancing Act
IEEE Power and Energy Magazine, Nov. - Dez. 2007 Vol. 5 No. 6 pp. 90-103

Krost, G.
Trends der Hochspannungstechnik: Berichte von der CIGRE 2006 (Teil 3) -- SC C2 "Betrieb und Regelung Elektrischer Energiesysteme"
etz, 2007 Vol. 11 S. 76-78

Erlich, I.; Kretschmann, J.; Fortmann, J.; Mueller-Engelhardt, S. & Wrede, H.
Modeling of Wind Turbines Based on Doubly-Fed Induction Generators for Power System Stability Studies
IEEE Transactions on Power Systems, 2007 Vol. 22 pp. 909-919

Matics, J. & Krost, G.
Computational Intelligence Techniques Applied to Flexible and Auto-adaptive Operation of CHP Based Home Power Supply
14th International Conference on Intelligent System Applications to Power Systems, November 2007 Kaohsiung, Taiwan PDF

Pappala, V.S.; Wilch, M.; Singh, S.N. & Erlich, I.
Reactive Power Management in Offshore Wind Farms by Adaptive PSO
14th International Conference on Intelligent System Applications to Power Systems, November 2007 Best Paper Award - Has won the best paper award at the 14th International Conference of Intelligent System Application to Power Systems, Kaohsiung, Taiwan PDF

Singh, S. N. & Erlich, I.
Particle Swarm Based Optimal Estimation of Block Incremental Cost Curve
14th International Conference on Intelligent System Applications to Power Systems, November 2007 Kaohsiung, Taiwan PDF

Wilch, M.; Feltes, C. & Erlich, I.
Reactive Power Generation by DFIG based Wind Farms with AC Grid Connection
European Conference on Power Electronics and Applications, September 2007 Aalborg, Denmark PDF

Matics, J. & Krost, G.
Die Sonne im Haus verwalten - Simulationsstudien einer Photovoltaik-basierten Hausversorgung
Essener Unikate, Berichte aus Forschung und Lehre der Universität Duisburg-Essen, 2007 Vol. 31 S. 8-17

Wilch, M.; Pappala, V.S.; Singh, S.N. & Erlich, I.
Reactive Power Generation by DFIG Based Wind Farms with AC Grid Connection.
IEEE Powertech, July 2007 Lausanne, Switzerland PDF

Pappala, V.S., & Erlich, I.
Uncertainty Modeling for the Management of Distributed Generation Units using PSO.
IEEE Powertech, July 2007 Lausanne, Switzerland PDF

Cai, L.J. & Erlich, I.
Power System Static Voltage Stability Analysis Considering all Active and Reactive Power Controls - Singular Value Approach.
IEEE Powertech, July 2007 Lausanne, Switzerland PDF

Pappala, V.S.; Wilch, M.; Singh, S.N. & Erlich, I.
Reactive Power Management in Offshore Wind Farms by Adaptive PSO
Engineering Intelligent Systems, June 2007 Vol. 15 No. 15 pp. 91-98 PDF

Erlich, I. & Brakelmann, H.
Integration of Wind Power into the German High Voltage Transmission Grid.
IEEE Power Engineering Society General Meeting, June 2007 Tampa, Florida, USA PDF

Matics, J. & Krost, G.
Prospective and Adaptive Management of Small Combined Heat and Power Systems in Buildings
Proc. of 9th REHVA World Congress CLIMA, June 2007 Helsinki, Finland

Feltes, C. & Erlich, I.
Variable Frequency Operation of DFIG based Wind Farms connected to the Grid through VSC-HVDC Link.
IEEE Power Engineering Society General Meeting, June 2007 Tampa, Florida USA PDF

Pappala, V.S. & Erlich, I.
Management of Distributed Generation Units under Stochastic Load Demands using Particle.
IEEE Power Engineering Society General Meeting, June 2007 Tampa, Florida, USA PDF

Erlich, I. & Shewarega, F.
Introduction of Wind Power Generation into the First Course in Power Systems.
IEEE Power Engineering Society General Meeting, June 2007 Tampa, Florida, USA PDF

Erlich, I.; Wrede, H. & Feltes, C.
Dynamic Behavior of DFIG-Based Wind Turbines during Grid Faults.
PCC Power Conversion Conference Proceedings, April 2007 Nagoya, Japan PDF

Matics, J.; Krost, G.; Freinatis, S. & Dubielzig, G.
Adaptive and Flexible Energy Management for Micro Combined Heat and Power Systems
IASTED International Conference on "Power and Energy Systems", Jan 2007 Clearwater, Florida, USA