Abdul Rahman, Muhammad Syahir Afif (2017) Harmonic minimization of a single phase cascaded h-bridge multilevel inverter. Project Report. Universiti Teknikal Malaysia Melaka, Melaka. (Submitted)
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Abstract
This project represent the research of harmonic minimization of a single phase cascaded H-bridge multilevel inverter (CHB-MLI). Multilevel inverter is used to combine a desired single or three-phase voltage waveform and also to minimize the harmonics in the electrical system. This project use cascaded H-bridge (CHB) topology due to least number of components use, output voltage level are doubled, and easy to controllled compared with diode clamp (DC) and flying capacitor (FC) topology. This research use three and five levels cascaded H-bridge multilevel inverter based on Newton-Raphson technique controller by using MATLAB/SIMULINK in order to reduce the harmonic in electrical system. The value of total harmonic distortion (THD) has been obtained based on the simulation design of three and five levels CHB-MLI. Next, prototypes of single phase three and five level CHB-MLI based on Newton- Raphson technique controller using DSPTMS320F2812 has been analyzed. The parameter based on simulation has been used in order to analyze the proposed prototypes of CHB-MLI. The source codes has been created and embedded into DSPTMS320F2812 in order to operate the prototypes of CHB-MLI. The modulation index that has been used in this research were 0.84 for optimization and 0.68 for non-optimization. Based on this research, the output voltage of total harmonic distortion (THDV) and output current of total harmonic distortion (THDi) content in the CHB-MLI has been analyzed. The performance of the proposed system was compared between the simulation and experimental results for optimization and non-optimization technique. Furthermore, the simulation and experimental results demonstrate which one of the proposed CHB-MLI has better performance in minimizing the harmonics contents. The waveforms of output voltage and current were smooth and low harmonic contents which suitable to be used in photovoltaic (PV) application.
| Item Type: | Final Year Project (Project Report) |
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| Uncontrolled Keywords: | Electric inverters, Electric power systems, Harmonics (Electric waves), Harmonic analysis |
| Subjects: | T Technology > T Technology (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Library > Final Year Project > FKE |
| Depositing User: | Nor Aini Md. Jali |
| Date Deposited: | 28 Aug 2018 04:04 |
| Last Modified: | 14 Feb 2025 01:28 |
| URI: | http://digitalcollection.utem.edu.my/id/eprint/21857 |
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