Abstract
This paper details weight and efficiency analysis of a bidirectional ±270V dc to 3-phase 115V ac power electronic interface as part of an integrated modular power electronics cabinet, which supplies various loads, such as motors and ac buses from a HVDC bus in more electric aircraft. Through a case study the analysis shows that a significant reduction of filter component weight is achieved with a 3-level instead of a 2-level topology. The interactions and trade offs between the power electronic switched circuits and the EMI filter are analyzed and quantified. The potential benefits through the use of SiC-MOSFET's instead of Si-IGBTs and the implications for the circuit topologies are detailed. Recommendations for the choice of the optimal switched circuit topology, dependent on the importances of efficiency, weight, and reliability, are proposed. Furthermore, recommendations for the focus of future research enabling the competitiveness of the MEA concept is given.
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