{'fraction_non_alphanumeric': 0.016456921587608905, 'fraction_numerical': 0.003872216844143272, 'mean_word_length': 5.228915662650603, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Investigation on Proportional Resonant Current Control for 7-Level Multilevel Inverter with Reduced Switching Device

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.