Design and Implementation of Seven-level Stepped-voltage Inverter

Abstract

This thesis is aimed to investigate a multi-level step-voltage inverter which can be applied to the exciting system of contactless power transmission Multiple DC voltages are generated as the input sources for the seven-level stepped-voltage inverter by a buck converter and then the inverter can obtain high-frequency AC output voltage The advantages of the inverter are low output harmonic distortion and low dv/dt Since the full-bridge resonant inverter is too difficult to operate at resonant frequency due to the reflection impedance that reflected to the primary side The system utilizes stepped-voltage inverter It can drive the primary side coil directly and the resonant circuit is no necessary The input voltage source ratios of the multilevel inverter have been designed with the concept of harmonic control It eliminates certain harmonics and more harmonics are eliminated as the step increases It utilizes the digital signal processor(DSP) as the controller This thesis is implemented a five-level stepped-voltage inverter and a seven-level stepped-voltage inverter to verify whether the output and spectrum are consistent with the analysis

Date of Award	2019
Original language	English
Supervisor	Jia-You Lee (Supervisor)