Conclusion

The aim of static conversion is to enable and/or control the exchange of energy between at least two electrical systems. To meet this objective, it processes electrical energy by adapting the electrical characteristics of these systems: waveforms, amplitudes, power, etc. Whatever the amplitudes or powers involved, the waveforms required (continuous, sinusoidal, trapezoidal...) are generally LF. Converters need to produce these LF waveforms, and to do so they use cutting techniques that ensure good efficiency within one or more switching cells. In this way, converters simultaneously produce the desired LF waveforms and, due to the very principle of chopping, chopping harmonics. Such is the general problem of static conversion presented in this first dossier.

The need to define the three time scales (LF, switching, switching) became apparent. Models adapted to each...