Analysis of LLL, LLLG, LLG, LL, and LG Faults in Inverter Based Power Systems
Also Available Domains Solar Power Generation
Objective
The main objective of this novel project is to develop a grid-connected photovoltaic system that delivers clean, stable power to a three-phase utility grid while remaining resilient under fault conditions. Maximum solar energy is captured through an MPPT-controlled buck converter, and a regulated DC link supports efficient voltage source converter (VSC) operation. The VSC control maintains balanced currents and steady power flow, enabling the system to withstand and quickly recover from symmetrical and asymmetrical grid faults such as LLLG, LLL, LLG, LL, and LG.
Abstract
This project presents the design, control, and fault analysis of a grid-connected photovoltaic (PV) system that integrates a PV array, a DC–DC buck converter with Perturb-and-Observe (P&O) Maximum Power Point Tracking (MPPT), and a three-phase voltage source converter (VSC) connected to a 400 V, 50 Hz utility grid. The buck converter maintains the PV array at its maximum power point under changing irradiance and temperature, while the VSC regulates a 500 V DC link, delivers balanced sinusoidal currents, and ensures grid-code compliance with the aid of an LCL filter. System robustness is evaluated in MATLAB/Simulink by applying a range of symmetrical and asymmetrical faults, including LLLG, LLL, LLG, LL, and LG conditions. Simulation results demonstrate that the coordinated MPPT and VSC control strategy preserves DC-link stability, maintains high power quality, and enables rapid recovery, confirming the system’s suitability for reliable and efficient solar-to-grid integration.
NOTE: Without the concern of our team, please don't submit to the college. This Abstract varies based on student requirements.
Block Diagram
Specifications
Software Configuration:
Operating System : Windows 7/8/10
Application Software: MATLAB / Simulink
Hardware Configuration:
RAM : 8 GB
Processor : I3 / I5 (Mostly prefer)
Learning Outcomes
· Introduction to Matlab/Simulink
· What is EISPACK & LINPACK
· How to start with MATLAB
· About Matlab language
· About tools & libraries
· Application of Matlab/Simulink
· About Matlab desktop
· Features of Matlab/Simulink
· Basics on MATLAB/Simulink
· Introduction to distribution lines
· Introduction to boost converter
· Introduction to inverter
· Introduction to the Solar
· Introduction to the MPPT
· Introduction to Pulse Width Modulation (PWM),
· Project Development Skills:
o Problem analyzing skills
o Problem solving skills
o Creativity and imaginary skills
o Programming skills
o Deployment
o Testing skills
o Debugging skills
o Project presentation skills
o Thesis writing skills
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