M.Sc. Tezi Görüntüleme

Student: Elif Selin Durak
Supervisor: Doç. Dr. Halil İbrahim OKUMUŞ
Department: Elektrik-Elektronik Müh.
Institution: Graduate School of Natural and Applied Sciences
University: Karadeniz Technical University Turkey
Title of the Thesis: Switching Angles Optimization in Multilevel Inverter
Level: M.Sc.
Acceptance Date: 11/1/2016
Number of Pages: 95
Registration Number: i2997

      In this study, specific harmonics in output waveforms of multilevel inverters are eliminated by using Selective Harmonic Elimination Pulse Width Modulation Technique (SHEPWM). Nonlinear equations, which enable to find switching angles obtained through SHEPWM in order to remove dominant harmonics are optimized with Particle Swarm Optimization (PSO) technique and Genetic Algorithm (GA) methods. Thus output waveform total harmonic distortion value is reduced. Optimized results are tested on a 7-level and 11-level inverters and output wave signals are observed. According to data obtained, it is observed that Genetic Algorithm optimisation results are much better than Particle Swarm Optimization results.

Key Words: Inverter, Selective Harmonic Elimination, Optimization, Particle Swarm Optimization, Genetic Algorithms, Multilevel Inverter