Total Harmonic Distortion (THD) is a very important factor to examine
harmonic contents of waveforms. In this paper, THD of the line output voltage of
multilevel inverters can be drastically minimized with an appropriate switching
scheme. Phase voltage THD minimization has simple computation but the same
method cannot be useful for line voltage THD minimization. So, line voltage THD
minimization is one of the most important requirements from the load point of view.
In order to obtain best switching angles to descend output line voltage THD,
Teaching-Learning-Based Optimization (TLBO) algorithm is applied. The obtained
results from TLBO which shows the efficiency of this method, are compared with the
recently published article using GA. Simulation and experimental results are clear
represented for a test case seven-level inverter to validate the studies.
کلید واژگان :
Keywords: THD Minimization, Teaching-Learning-Based Optimization, LineTo-Line voltage
