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Logo: Hannover Center of Mechatronics/Leibniz Universität Hannover
Logo Leibniz Universität Hannover
Logo: Hannover Center of Mechatronics/Leibniz Universität Hannover
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IAL - Institute for Drive Systems and Power Electronics

At the Institute for Drive Systems and Power Electronics (IAL), experts for electrical machines, power electronics and drive control are doing research work in the entire field of drive technology reaching from the microwatt to the multi-megawatt range. A unique feature of IAL in the German-speaking part is the close cooperation of two full professorships in drive technology united in one institute.

Based on the long-time work of Prof. H.O. Seinsch, Prof. H.-D. Stölting and last but not least of Prof. H. Jordan, the most well-respected electromechanical engineer in the world of the post war period, the main research work in the field of electrical machines focuses on the development of calculation methods and software as well as on the research, pre-calculation and elimination of technically important parasitic effects like magnetically excited noise, torque pulsations or bearing currents.

The competences in the field of power electronics are reaching from the characterisation of power semiconductors and the development of innovative drive concepts, the development, dimensioning and optimisation of power electronic circuits and their respective control and modulation methods to the control of electric drives with or without mechanical sensors.

The joining of the two formerly independent institutes Electrical Machines and Power Electronics to one institute in 2001 reflects the technological development towards integral overall systems. On the one hand, this structure is the ideal basis for a close cooperation, and on the other hand, it offers distinct expertise in both chairs, thus perfectly matching the concept of the MZH.

IAL Core Competences

Power Electronics and Drive Control

  • Application, characterisation of power semiconductors
  • Investigation of different converter topologies
  • Modulation methods
  • Sensorless control methods
  • Calculation and simulation of mains interactions
  • Reliability and availability of systems

Electrical Machines and Drive Systems

  • Electromagnetic dimensioning of rotating or linear motors and generators
  • Analytic calculation of the steady-state and dynamic performance
  • Calculation methods and parameter identification for electrical machines
  • Design and calculation software
  • Pre-calculation and elimination of technically important parasitic effects like magnetically excited noise, torque pulsations, bearing currents and additional losses
  • Numerical field calculation
  • On-site measurements
  • Fault analysis and diagnosis of defects and failures

Technical Equipment (Extract)

  • Medium-voltage laboratory for power electronics
  • Analog power amplifier 30 kVA, 30 kHz
  • Power measuring device with up to 8 channels and 3 MHz sampling rate
  • Motor test benches of 10 W to 70 kW
  • Data logger with up to 80 channels
  • Online FFT analyser

Institute for Drive Systems and Power Electronics – Contact Information

Prof. Dr.-Ing. Axel Mertens

IAL - Institute for Drive Systems and Power Electronics
Power Electronics and Drive Control
Leibniz Universität Hannover
Welfengarten 1
30167 Hannover

Phone: +49 511 762 2471
Fax: +49 511 762 3040
E-mail: mertensial.uni-hannover.de

Prof. Dr.-Ing. Bernd Ponick

IAL - Institute for Drive Systems and Power Electronics
Electrical Machines and Drive Systems
Leibniz Universität Hannover
Welfengarten 1
30167 Hannover

Phone: +49 511 762 2571
Fax: +49 511 762 3040
E-mail: ponickial.uni-hannover.de