Designing a High-Current 1kW Current-Source Inverter using WBG switches
O.R. Twisk (TU Delft - Electrical Engineering, Mathematics and Computer Science)
J. Dong – Mentor (TU Delft - DC systems, Energy conversion & Storage)
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Abstract
Due to
recent developments in current-soruce inverter technology the topology becomes
more attractive for use in electric aircraft. However recent studies have shown
that electric aircraft are unlikely to be able to operate at high voltages due
to the insulation derating, meaning that higher current solutions should be
evaluated. In this paper a design is presented that is intended to operate at
high currents and lower voltage in order to investigate what influence this
shift in operating point has on the functionalit of the inverter. Different
design elements are discussed and motivated, including the topology, component selection,
and current control methods. After validating the functionality through
experimentation the discovered issues are explained and discussed. The design
will be shown to be functional, although some of these issues do limit its
performance.