Design of a grid-tied inverter and LCL filter for photovoltaic application

Grid-tied inverters inject harmonics into the grid when using high-frequency PWM, reducing the grid’s energy quality. Therefore, a filter is required between the power inverter and the utility grid to ensure quality energy that abides by IEEE standards for grid integration. This paper proposes a 4kW, 400V grid-tied inverter and LCL filter design to interface an array of solar panels to the utility grid. The theory of the two-level, three-phase power inverter and its filter, along with their corresponding designs, is analyzed. Filter selection is discussed, in addition to a filter damping method using a resistor in series. Design, simulation, and experimental tests demonstrate the mathematical theory of the selected LCL filter.

Name thesis:degree_name

M.S.

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Electrical & Computer Engr

Grantor

University of Illinois Urbana-Champaign

Year dc:date

2025

Author dc:creator

• Jeziorczak, Victoria

Contributors dc:contributor

• Banerjee, Arijit

• Lcl Filter
• Grid-tied Inverter
• Ac-dc
• Dc-link Capacitor
• Thd

Statement dc:rights

• Copyright 2025 Victoria Jeziorczak

Language dc:language

en, eng

Handle dc:identifier

https://hdl.handle.net/2142/129190

OAI record oai:identifier

https://www.ideals.illinois.edu/oai-pmh?verb=GetRecord&metadataPrefix=etdms&identifier=oai%3Awww.ideals.illinois.edu%3A2142%2F129190