Design and development of the higher order filter utilising systematic design approach for PWM based PV inverter

Rosman, Muhammad Nabil (2023) Design and development of the higher order filter utilising systematic design approach for PWM based PV inverter. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

In a distributed generation (DG) system, a higher-order filter plays an important role in improving the quality of the electrical power generated by the Photovoltaic (PV) system. However, the inherent resonance of high-order filters makes it difficult to manage the converter and to set the filter parameters. This project aims to design and develop a higher-order filter for a PWM based PV inverter using a systematic design approach. The project will involve designing the filter, constructing filter inductors and capacitor, testing and verifying the filter's performance in terms of THD and current ripple suppression. The expected outcome of the project is a higher-order filter design that will reduce high-frequency noise and harmonics, resulting in improved power quality and efficiency. The project's significance lies in its potential to advance power electronics research and improve the performance of PWM based PV inverters. In MATLAB, the LCL circuitry associated with H-bridge voltage source inverter was designed. In this thesis, a filter will be constructed by using parameters employed in simulations. The filters with different core permeabilities will be constructed and tested to compare how magnetic properties influence filter performance. The performance of the system was analysed using several kinds of observations. The results were compared and validated with theoritical value which this is certainly done by observing total harmonic distortion (THD) value below 5% in accordance to the IEEE 519- 1992.

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