Team andStaff Members

Dr.-Ing. Nils Hoffmann Head of R&D Department

Fields of expertise: Control of power electronic systems, Analysis and optimization of complex electrical systems, Converter rating and design, Network disturbances and power quality in renewable energy generation systems

  • Studies in Electrical Engineering Christian-Albrechts-University Kiel/Germany
  • Dipl.-Ing./Dr.-Ing. degree in 2009/2014
  • 2008: BA thesis with the topic: “Investigation of resonant controller for harmonic current suppression for grid-connected converter systems”
  • 2009: MA thesis with the topic: “Predictive control of electrical drive systems with resonant loads”
  • 2015: PhD thesis with the topic: “Grid-adaptive control and active-filter functionality of grid-connected PWM converters in renewable energy generation”, grade: summa cum laude (with honors)
  • Since 2013: Head of R&D Department for Power Electronics and Electrical Drives at Ingenierubüro Hoffmann GmbH
  • Example of publication: N. Hoffmann, F.W. Fuchs, M.P. Kazmierkowski, and D. Schröder, “Digital current control in a rotating reference frame Part I: System modeling and the discrete time-domain current controller with improved decoupling capabilities,” IEEE Trans. Power Electron., vol. 31, no. 7, pp.5290-5305, 2016.

Dr.-Ing. Felix Fuchs Senior Development Engineer

Fields of expertise: Control of grid-side and motor-side connected power electronic systems, life-time estimation of semiconductors in power electronic applications

  • Studies in Electrical Engineering Christian-Albrechts-University Kiel/Germany
  • Dipl.-Ing. degree in 2009
  • 2009: MA thesis with the topic: “Sliding-mode-control of grid-connected converter systems with LCL-filters”
  • 2017: PhD thesis with the topic: “Grid-connected converter control and filter design für wind turbines connected to a weak and capacitive grid“ Leibniz University Hannover/Germany

Dr.-Ing. Kristina Köster Senior Development Engineer

Fields of expertise: Modeling of frequency converters in wind turbine applications, Experimental evaluation of power electronic systems and electrical drives

  • Studies in Electrical Engineering and Management at Christian-Albrechts-University Kiel/Germany
  • Dipl.-Wirtsch.-Ing. degree in 2011
  • 2011: MA thesis with the topic: “Comparison of multilevel converters for the application in multi-megawatt wind turbine systems”
  • 2017: PhD thesis with the topic: “Analysis and optimization of generator converter concepts in small wind turbine systems”
  • Example of publication: K. Buchert, “Power Losses of Three Phase Rectifier Topologies in Small Wind Turbines in Proceedings of International Exhibition and Conference of Power Electronics, Intelligent Motion, Renewable Energy and Energy Management” PCIM Europe, Nürnberg, 2015.

Hendrik Sacher, M.Sc. Development Engineer

Fields of expertise: Load-flow analysis in distributed energy networks, Automated test systems, Optimization of variable-speed drive systems, Parametrization of frequency converters and filed-bus components

  • Studies in Electrical Engineering at Leipzig University of Applied Science
  • Master of Science degree
  • MA-Thesis with the topic: “State Estimation in low- and medium- and high-voltage power distribution systems”

Thomas Eckardt, M.Sc. Development Engineer

Fields of expertise: Maintenance and optimization of electrical machinery and equipment, Construction and installation of electrical power systems, Field-bus controller and HMI-programming, Installation of measurement systems, Configuration of electrical drive systems

  • Studies in Electrical Engineering at Otto-von Guericke-University Magdeburg/Germany
  • Master of Science degree
  • MA thesis with the topic: “Installation of a test bench for linear motor applications”

Ines Bohn

office assistant and accounting

Dorit Freygang

office assistant and accounting