05. - 07.06.2018
PCIM Europe 2018
Power Electronics | Intelligent Motion | Renewable Energy | Energy Management


Oral Session

Control in Power Electronics


Wednesday, 06.06.2018, 10:00 - 12:05 hrs


München 1


Walter Schumacher, Braunschweig University of Technology, D


10:00 Control Scheme for Wide-Bandgap Motor Inverters with an Observer-Based Active Damped Sine Wave Filter
Dipl.-Ing. Franz Maislinger, Technical University Vienna, Wien, Österreich
Nominated for the Young Engineer Award

A method for active damping of a two-stage sine wave filter for wide-bandgap motor inverters is presented avoiding any sensing of filter voltage/currents. The method is based on a linear observer model, which is used for estimating the capacitor filter currents required for implementing the active damping. The inverter's motor currents are controlled using a conventional PI-type controller with feedback of the estimated capacitor filter currents. Using the proposed method, no additional measurements and dissipative damping losses appear.
10:25 Adaptive Frequency Control of DC-DC-Converters for Maximum Efficiency Using Artificial Neural Network
M.Sc. Lukas Keuck, University of Paderborn, Paderborn, Deutschland
It is common practice to operate DC-DC converters at one constant switching frequency. However, the loss-optimal switching frequency depends on the operation point. The loss-optimal switching frequency depends on various parameters so a look-up-table suffers from huge data volume. To overcome this problem, an artificial neural network is trained. The artificial neural network is embedded in an adaptive high-dynamic control. Experimental results show an efficiency improvement of approximately 1%.
10:50 Estimation of the Excitation Current of an Externally Excited Synchronous Machine Supplied by a Two-Switch Flyback Converter
M.Sc. Stefan Köhler, Technische Hochschule Nürnberg Georg Simon Ohm, Nuremberg, Deutschland
An estimation algorithm for the excitation current of an externally excited synchronous machine supplied by a two-switch flyback converter is presented. The estimation algorithm uses the primary current wave form of the two-switch flyback converter to calculate the excitation current.
11:15 Adaptive and Robust Stabilization of Flyback Power Converters with Digital Control
Gaetan Beneux, SAFRAN - CRAN, Valence, Frankreich
DC/DC converters are electrical systems used to adapt an input source to an output load. We propose a switched and adaptive control strategy with global asymptotic stability guarantees. The hybrid nature of these dynamical systems is taken into account through a switched system modeling. Input source and output load bounded variations are handled using a parameter estimation procedure. This paper shows a physical real time implementation of the control algorithm using C2000-familly processor from Texas Instrument.
11:40 Asymmetric Current Control of Grid Connected 3-Phase Cascaded H-Bridge Multilevel Inverter
Dr.-Ing. Taha Lahlou, Technical University of Munich, München, Deutschland
In this paper, a flexible current control scheme is proposed based on symmetrical component extraction, for the control of multilevel inverter in grid connected battery storage applications. To drive and compensate the unbalanced currents in grid tie operation, proposed method provides more flexibility as compared to classic vector oriented current control by means of injecting or extracting unequal magnitudes current in each phase. Unbalanced line currents are decomposed into their symmetrical sequence components. Filter based extracted positive, negative and zero sequence components are controlled separately by means of PI controller in rotating dq-reference frame. The control method is simulated in Matlab/Simulink and simulation results are validated on hardware test bench set up.


Speaker detail

Mr. Gaetan Beneux
Gaetan Beneux
SAFRAN - CRAN, Valence, Frankreich
Beneux Gaetan received the Diploma degree in control engineering from ENSEM University, Nancy, France in 2014. He is currently pursuing the Ph.D. degree in control engineering at Safran Group amd CRAN Lab. His research interest includes analysis and control of switched affine systems.
Mr. Lukas Keuck
M.Sc. Lukas Keuck
University of Paderborn, Paderborn, Deutschland
Lukas Keuck received the B.Sc. and M.Sc. degrees in electrical engineering from the South Westphalia University of Applied Science, Soest, Germany and University of Bolton, United Kingdom in 2013. He studied in a cooperative study course with the company AEG Power Solutions. He is currently working toward the Ph.D. degree in the department Power Electronics and Electrical Drives at University Paderborn, Germany, where his research focuses on design and control of automotive on-board converters.
M.Sc. Stefan Köhler
Technische Hochschule Nürnberg Georg Simon Ohm, Nuremberg, Deutschland
09.2008 - 11.2012: Diploma studies in the field of mechatronics (FH Zittau)
03.2013 - 12.2014: Master studies in the field of control engineering, power electronics and electric mobility (TH Nuremberg Georg Simon Ohm)
since 01.2015: Doctoral student in the field "Control of Externally Excited Synchronous Machines"
Mr. Taha Lahlou
Dr.-Ing. Taha Lahlou
Technical University of Munich, München, Deutschland
Taha Lahlou received the B.Sc. and M.Sc. degrees in electrical engineering from technical university of applied sciences in Duesseldorf, Germany. Since 2013, he has been working toward the Ph.D. degree at the Institute of Energy Conversion Technology (EWT), Technical University of Munich (TUM), Germany. His research interests include power electronics topologies, grid connected inverter, and multilevel inverter, especially Cascaded H-Bridge Inverter, for battery energy storage systems.
Herr Franz Maislinger
Dipl.-Ing. Franz Maislinger
Technical University Vienna, Wien, Österreich
Franz Maislinger studied Electrical Engineering at TU Wien, Vienna Austria, with focus on Automation Engineering/Power Electronics. He currently is working on the research project for Power Converters based on wide bandgap materials.