Study on Capacitive and Inductive Load of Multilevel Inverter

  • 高 聖凱

Student thesis: Master's Thesis

Abstract

This thesis mainly studies on the capacitive load and inductive load characteristic of multilevel inverter When load is capacitive or inductive some topologies are not able to provide the expected current path during switching dead time Therefore the current is forced to flow through the input source and results in voltage level change This thesis reviews some existing topologies checking whether there is current path problem or not After review these topologies with current path problem will be sorted by their solution to the problem This thesis focuses on one of the solutions to study Finally a five-level multilevel inverter whose input voltage is 400 V dc output voltage is 220Vrms ac and output apparent power is 3 75 kVA is implemented to verify that the problem exists The solution presented is also implemented to improve the characteristic of the circuit when load is capacitive or inductive A comparison of the characteristics before and after the solution is implemented and is presented to show the difference
Date of Award2014 Aug 18
Original languageEnglish
SupervisorJiann-Fuh Chen (Supervisor)

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