Dr.-Ing. Melanie Hoffmann

Telefax:	+49 531 391 8106
E-Mail:
Officehours:	jederzeit nach Vereinbarung
Workgroup:	Energietechnologien

Research

• Netzanschluss von Offshore Windparks über HGÜ
• Simulation von Netztopologien mit PSCAD
• Durchführung von Marktanalysen für Netzanschlusstopologien für Offshore Windparks mittels HGÜ
• Systembetrachtungen mit SysML
• Model-based Systems Engineering for Energy Systems
• Involvement in the DC Systems and Switchgear Research Group

Studentic theses

Open

• Component Modeling of Offshore HVDC Converter Platform

Assigned

• Requirement Validation of a HVDC Grid Connection System for Offshore Wind Farms as part of the Systems Engineering Methodology

Finished

• Requirement Analysis for the Connection of Offshore Wind Farms in SysML with a subsequent Concept Study
• System Structure Definition including Component Analysis for HVDC Transmission System Development
• Entwicklung einer Methode zur Optimierung von HGÜ Netzanschlusskonzepten anhand eines Fallbeispiels
• Verification of Technical Requirements for a HVDC Grid Connection Topology as part of the Systems Engineering Methodology
• Development of a Systems Engineering Based Assessment Methodology for DC Systems
• Systematische Konzeptentwicklung von DC-Systemen mit anschließender Modelica Implementierung
• Innovative Konzepte zur Bereitstellung des Offshore Windpark Eigenbedarfs unter Berücksichtigung von HGÜ-Netzanschlusstopologien
• Modelling of HVDC Grid Topologies and DC Breakers in MATLAB/Simulink
• Marktanalyse und zukünftige Entwicklungen für Netzanschlusskonzepte von Offshore Windparks mittels HGÜ

Publications

• Hoffmann, M., Inkermann, D., Knieke, C., Zeng, F., Kopp, T., Terörde, M., Kurrat, M.: Early Design Stage Evaluation of All Electric Aircraft Power Systems Focusing on Long-Term Behavior, Energies 17, no. 18: 4653 , Jg.(2024). DOI: 10.3390/en17184653
• Chaffey, G., Jahn, I., Hoffmann, M., Alvarez Valenzuela, R., Prieto Araujo, E., Norrga, S.: Model-based systems engineering for HVDC grids – state-of-the-art and future outlook, Cigre Session 2024, Paper 10836, Paris, France, 25.-30. August 2024
• Hoffmann, M.: CIGRE NGN - Webinar on market readiness for 132 kV offshore wind farms, Cigre Electra N°331 , Jg.(2023)
• Wu, Q., Hoffmann, M., Khazraj, H., Zúñiga, J., Sethi, S., Kurrat, M.: Controllability of Grid Forming Wind Power Plant Converters Under Fault Ride Through, 22nd Wind & Solar Integration Workshop, Copenhagen, Denmark, 26.-28. September 2023
• Jahn, I., Chaffey, G., Prieto-Araujo, E., Düllmann, P., Monti, A., Hoffmann, M.: Functional Modeling of MMC Control and Protection, CIGRE, B4 International SC Meeting and Colloquium, Vienna, Austria, 9.-15. September 2023
• Filliot, L., Leon Garcia, W., Chairs: Leon Garcia, W., Silvant, S., Chedot, L., Co-Chairs: Dennetiere, S., Hoffmann, M., El Khatib, W., Kolichev, D.: Modelling, Simulation Framework and Data Sharing for Multi-Terminal Multi-Vendor HVDC Interaction Studies, Ready4DC project Deliverable 1.2 Whitepaper , Jg.(2023)
• Jahn, I., Chaffey, G., Prieto-Arauju, E., Hoffmann, M., Alvarez, R., Monti, A.: On the Partitioning of MMC Control Systems Using Graph Theory, IEEE Open Journal of Power Electronics, Vol. 3 , Jg.(2022), S. 611-620. DOI: 10.1109/OJPEL.2022.3204558
• Jahn, I., Nahalparvari, M., Hirsching, C., Hoffmann, M., Düllmann, P., Loku, F., Agbemuko, A., Chaffey, G., Prieto-Araujo, E., Norrga, S.: An Architecture for a Multi-Vendor VSC-HVDC Station With Partially Open Control and Protection, IEEE Access, Volume 10 , Jg.(2022). DOI: 10.1109/ACCESS.2022.3146782
• Lotz, M., Majumdar, N., Beutel, V., Gerlach, J., Wegkamp, C., Hoffmann, M., Kahl, L., Wussow, J., Schlachter, H., Agert, C., Breitner, M., Engel, B., Geißendörfer, S., Hofmann, L., Könemund, M., Kurrat, M., Leveringhaus, T., von Maydell, K.: Potentials and Technical Requirements for the Provision of Ancillary Services in Future Power Systems with Distributed Energy Resources, NEIS 2021, Conference on Sustainable Energy Supply and Energy Storage Systems, Hamburg, 13.-14. September 2021, S. 53-60. ISBN 978-3-8007-5651-3
• Hoffmann, M., Wei, C., Kurrat, M.: Requirement Analysis with SysML for Concept Design of Offshore Wind Farm Grid Connection, VDE ETG Kongress 2021, digital, 18.-19. Mai 2021
• Wussow, J., Babazadeh, D., Beutel, V., Buchholz, S., Geissendörfer, S., Gerlach, J., Majumdar, N., Maydell, K., Narayan, A., Hoffmann, M., Kahl, L. (Paper), Leveringhaus, T., Lotz, M., Scheunert, A., Teimourzadeh Baboli, P., Tiemann, P., Huxoll, N., Wegkamp, C. (Vortrag), Werth, O., Agert, C., Breitner, M., Engel, B., Hoffmann, L., Könemund, M., Kurrat, M., Lehnhoff, S., Nieße, A., Weyer, H.: SiNED-Ancillary Services for Reliable Power Grids in Times of Progressive German Energiewende and Digital Transformation, ETG Kongress, digital, 18.-19. Mai 2021
• Plet, C., Hoffmann, M., El-Khatib, W., Alefragkis, A., Kurrat, M.: Levelized Energy Cost Improvement through Concept Selection and Availability Optimization for the Norfolk Windfarms’ Export Links, 48. CIGRE-Konferenz 2020, Paris, 23. August 2020
• Hoffmann, M., Chamorro, H., Lotz, M., Maestre, J., Rouzbehi, K., Gonzalez-Longatt, F., Kurrat, M., Alvarado-Barrios, L., Sood, V.: Grid Code-Dependent Frequency Control Optimization in Multi-Terminal DC Networks, Hg. von Energies, 13. Aufl., Switzerland: MDPI, 2020. ISBN
• Lotz, M., Hoffmann, M., Könemund, M.: A Closed-Loop Power-Hardware-in-the-Loop Testbed for Low Voltage Modular Multilevel Converter Design Validation, PCIM Europe digital days 2020, PCIM Europe digital days 2020 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, Deutschland, 7.- 8. Juli 2020, S. 103. ISBN 978-3-8007-5245-4
• Hoffmann, M., Rathke, C., Menze, A., Hemdan, N., Kurrat, M.: Parallel Operation of HVDC DRU and VSC Converters for Offshore Wind Farm Connection: Technical and Economic Feasibility, The 15th IET international conference on AC and DC Power Transmission, Coventry, 5.- 7. Februar 2019
• Hoffmann, M., Rathke, C., Menze, A., Hemdan, N., Kurrat, M.: AC Fault Analysis of DRU-VSC Hybrid HVDC Topology for Offshore Wind Farm Integration, VDE/IEEE Power and Energy Student Summit 2018, Kaiserslautern, 3. Juli 2018