Sim, Faustina Mei Ching (2021) Design of selective harmonic elimination technique for three phase voltage source inverter. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)
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Abstract
Nowadays, the performance of the inverter has become an integral part of contributing to an efficient power system. The development of Selective Harmonic Elimination Inverter Technology plays a vital role in electrical applications. This development has increasingly taken over from conventional two-level inverters in industrial applications. In this project, a two-level inverter with the SHE-PWM technique is used to eliminate specific low-order harmonics, thus improving the THD of the waveform output. Since the structure of the equation derived from the Fourier transform is non-linear and transcendental, the amplitude of any odd harmonics in the output signal is calculated using any specific modulation index and Fourier series. In this project, a method is proposed to obtain the required switching angles for the SHE PWM technique is the Newton-Raphson method which is used to solve transcendental equations to find switching angles for a three-phase inverter with some random initial assumption that would yield all desirable solutions. Seven switching angles for modulation index 1.0 have been solved by using the Newton-Raphson method and MATLAB/SIMULINK program where the first harmonic was controlled and 5th, 7th, 11th, 13th, 17th, and 19th harmonics was eliminated. The simulated results of the three-phase two-level Voltage Source Inverter for the phase voltage, output current, and line-to-line voltage, and total harmonic distortion has been analyzed. The simulation results also demonstrated using various RL loads and a motor. The overall simulation results meet the IEEE STD. 1547 Requirements for maximum Harmonic Distortion.
Item Type: | Final Year Project (Project Report) |
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Uncontrolled Keywords: | Voltage source inverter, SHE PWM, Fourier, Harmonics, Selective, Harmonic, Elimination technique |
Divisions: | Library > Final Year Project > FKE |
Depositing User: | Sabariah Ismail |
Date Deposited: | 17 Aug 2022 04:12 |
Last Modified: | 19 Aug 2022 04:01 |
URI: | http://digitalcollection.utem.edu.my/id/eprint/26087 |
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