Abstract
This project describes the investigation on the Proportional Resonant (PR) control and its performance for a 7-level multilevel inverter using only 5 switches of devices in the single-phase inverter. The performance of the PR control is measured based on the ability of the controller to reduce the harmonic distortion in the inverter output system when connected to a non-linear load. This project is divided into two parts: firstly by using the MATLAB simulation, and then testing the hardware implementation. The results of the multilevel simulation in MATLAB/Simulink show that the implementation of the PR control in the inverter system can reduce the total harmonic distortion caused by the non-linear load; meanwhile, the hardware results show that the PR controller system is applicable and functioning well for generating a 7-step level using TI microcontroller based on current PR control strategy system.
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