Thomas Lannert, Emanuel Mittwede, Raimund Kempf, Michael Braun

International Conference on Indutrial Technology (ICIT) 2015, Seville, Spain

Abstract - In Z-Source Inverters (ZSI), the modulation strategy
determines the size of the inductors and capacitors as well as the
system losses. In this paper the impact of the modulation method
on the design of the passive components is examined in detail with
an Interior Permanent Magnet Synchronous Machine as load.
Specific features of several modulation methods are presented for
steady state operation and guidelines for the design procedure
are developed. It will be shown, that a large number of Shoot-
Through states does not necessarily lead to small ripples in the
passive components. From these considerations, a method for
minimizing the required inductance and ZSI losses is established.
Simulations and experimental results, including the measurement
of the system losses support the analysis