Team andStaff Members

Dr.-Ing. Nils Hoffmann CEO and 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. Senior 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”

Bin Wang, M.Sc. Development Engineer

Fields of expertise: Software engineering (MATLAB Simulink, Python, C, Java), Rapid Control Prototyping, hardware-related programming and simulation

  • Studies in Automation Engineering at RWTH Aachen University
  • Master of Science degree
  • MA-Thesis with the topic: „Optimization of control settings in building energy systems“

Christian Eckhardt, B.Eng. Development Engineer

Fields of expertise: Electrical design, Planning and construction of electrical systems, measurement of test systems, installation of measurement systems, documentation of electrical systems maintenance / optimization / servicing of technical facilities

  • Studies in Electrical Engineering at Anhalt University of Applied Science
  • Bachelor of Engineering degree
  • BA-Thesis with the topic: “ Investigation of the behavior of a three-phase grid formed by a frequency converter for a 7.5 MVA test bench for wind energy converters”

Yasin Kabir, M.Sc. Development Engineer

Fields of expertise: Modeling, simulation and control of Multilevel Converters, Renewables integration to the power grid, Modeling and control of E-Drives

  • Studied in Electrical Engineering with a specialization in Power Engineering at University of Rostock
  • Master of Science degree
  • 2020: Master thesis with the topic: “Design, Control and Cell-Symmetrization of a Multicell ANPC (9-Level) Grid-Side Converter”

Ivo Zander, M.Sc. Development Engineer

Fields of expertise: Development and assembly of servo drive systems, automation technology, CNC machines, robotics and measurement eletronics, Optimization of variablespeed drive systems

  • Studies in Electrical Engineering at Leipzig University of Applied Science
  • Master of Science degree
  • MA-Thesis with the topic: „Movement Control for a Contactless Supplied Planar Transport System“

Dipl.-Ing. (FH) Lars Springer Development Engineer

Fields of expertise: automated testsystems, software development (C, MATLAB/Simulink)

  • Studies in Electrical Engineering at University of Applied Sciences Zwickau
  • Dipl.-Ing. (FH) degree
  • MA-Thesis with the topic: „Capture and evaluation of interferences in CAN-FD connections within a system with a microcontroller“

Dengrui Li, M.Sc. Development Engineer

Fields of expertise: control and simulation of grid-forming inverters, practical test setup and measurement on power electronic circuits

  • Studies in Electrical and Information Technology at Leibniz University Hannover
  • Master of Science degree
  • MA-Thesis with the topic: „Implementation of an extended Kalman filter to determine the grid impedance from measurements of an inverter“

Prashant Dhanani, M.Sc. Development Engineer

Fields of expertise: Model-based development of geometry, Constructive 2D/3D design of machine elements and components (CAD/CAM), Computational Fluid Dynamics (CFD), Finite element method (FEM) and Thermal simulation

  • Studies in Mechanical Engineering at University of Applied Sciences Düsseldorf
  • Master of Science degree
  • MA-Thesis with the topic: „Model-based design of the cooling geometry inside shaft of a thermoelectrically tempered motorised spindle“

Vanessa Jäger Laboratory Technician

Fields of expertise: development and construction of mechanical and electrotechnical facilities, maintenance and optimization of cooling water systems, maintenance of technical facilities

  • professional training as cutting machine operator

Ines Bohn

office assistant and accounting

Dorit Freygang

office assistant and accounting