In recent years, multi cell topologies in form of multilevel converters have become standard practice in the field of HVDC grids and Medium Voltage Drives. But lower voltage applications seem to take benefit from the usage of new multi cell solutions and topologies, as well. The increasing number of levels in serial multi cell configuration even allows using low voltage MOSFET devices to reach the goals of energy efficiency and improved performance. In parallel configuration the independent multi cell sub modules allow the increase of energy efficiency in part load conditions very easily. The Neutral Point Clamped topology which started this revolution is now one of several solutions, but there are also improvements.

With this mature technology, switching higher voltages and delivering higher power are not the only benefits, which allow other fields of application. Improved efficiency is a key feature for photovoltaic systems and uninterruptible power supplies, reduced harmonic distortion helps making lighter and more compact onboard systems, increased apparent switching frequency and bandwidth allows suppressing electrolytic capacitors in voltage regulator modules feeding microprocessors.

Multi Cell / Multi Level topologies have changed the world of Power Electronics, and this affects every part of the design of power converters: control and modulation techniques, technological requirements, system-oriented design and reliability issues.

The workshop is chaired by Prof. Thierry Meynard (University of Toulouse, ENSEEIHT – LAPLACE), Prof. Johann W. Kolar (ETH Zurich) and Jochen Koszescha (ECPE).

All presentations and discussions will be in English.