15-Level Power Inverter Topology for Generating High-Frequency Output Voltage with Low Harmonics

摘要

Due to their reduced switching voltage stress, better harmonic performance and lower switchingrnlosses multilevel power inverters have been the inverter of choice in medium-high voltagernapplications. This paper will present the concept of an innovative hard switching 15-level powerrninverter for generating high frequency output voltages (e.g. 30 kHz) based on the series connection ofrna 5-level Neutral-Point-Clamped inverter and a H-bridge inverter. Furthermore, the basic operationrnmode and the control algorithm will be explained. Finally, a Matlab/Plecs simulation and measurementrnresults will be presented.