Power electronics is the discipline that allows **converting electrical energy from one form to the other** (DC=>AC, low voltage=>high voltage,
unregulated=>regulated,...) with an efficiency that can theroretically reach 100%. This is achieved with semiconductors operating in switchmode
(~0V when ON, ~0A when OFF => 0 losses) and passive components (~0 active power=> 0 losses) to smooth the power flow. There are many ways to
connect these elements and each of these topologies will in practice give a different performance (weight, efficiency,...). In recent years we
have introduced several new variants of **multicell topologies that need to be compared to more standard topologies**, which led us to develop specific
design methods that are exemplified here. In many cases it is possible to describe a *n*-cell converter with '*n*' as a simple parameter,
the case *n*=1 giving the standard two-level topology; whenever possible, this is used to allow easy comparison of standard and multicell
topologies and this applies to both simulation (circuit=> waveforms) and design (specifications=>circuit).

We give here a few examples of tools that illustrate various aspects of this know-how :

- Introduction to the main concepts : multicell conversion and vectorized circuits
- On-line tools for the design of multicell conversion using design masks and vectorized circuits
- Learn more on multicell conversion and vectorized circuits
- Introduction to the design of Static Converters
- A fast solver for the design of basic multilevel architectures
- About the authors : Thierry MEYNARD, Guillaume FONTES