Type of Document	Thesis
Author	Tian, Yi
Author's Email Address	yt05@hotmail.com
URN	etd-06222007-133201
Title	Analysis, Simulation and DSP Based Implementation of Asymmetric Three-Level Single-Phase Inverter in Solar Power System
Degree	Master of Science
Department	Electrical and Computer Engineering, Department of
Advisory Committee	Advisor Name Title Jie J. Chang Committee Chair Krishna Arora Committee Member Rodney G. Roberts Committee Member
Keywords	Solar Power System PWM DC-AC Converter DSP
Date of Defense	2007-04-30
Availability	unrestricted
Abstract Switching-mode single-phase DC-AC inverters have been widely used in many applications such as AC motor drivers and uninterrupted power supply systems. Among various control techniques, pulse-width-modulation (PWM) is the most effective one generally used to regulate the magnitude as well as frequency of the converter’s output voltage. In this thesis, an open-loop asymmetric three-level inverter with a modified PWM approach is proposed. This novel topology with the modified PWM approach has advantages of smaller device voltage, less harmonics and power loss, and more flexible device selection, compared with conventional H-bridge inverter and NPC inverter. Theoretical analysis is completed; digital simulation is conducted to verify the theoretical analysis. Experimental implementation base on DSP is also performed and the results are demonstrated. Moreover, this inverter is applied in a three-arm solar power system. The theoretical analysis and digital simulation for the whole system are also presented.
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