Interactions between electronic power converters in microgrids and Impacts on Power Quality

• Grant number: 24/17636-0
• Support Opportunities: Regular Research Grants
• Start date: July 01, 2025
• End date: June 30, 2028
• Field of knowledge: Engineering - Electrical Engineering - Industrial Electronics, Electronic Systems and Controls
• Principal Investigator: Jose Antenor Pomilio
• Grantee: Jose Antenor Pomilio
• Host Institution: Faculdade de Engenharia Elétrica e de Computação (FEEC). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil

Abstract

The Project presents and discusses two phenomena associated with using electronic power converters in electrical networks. The interactions between the low-pass filters present both at the output and input of the converters will be investigated, which can induce the circulation of high-frequency current between converters or loads. The study will use modeling, simulation, and experimental verification. As a result of the excessive presence of high-frequency components in power distribution buses, a second focus is the analysis of measurement errors in power quality analyzers due to digital sampling of electrical quantities, exploring problems of aliasing, filtering, and digital processing. These phenomena will also be analyzed by simulation and verified experimentally. It seeks to understand emerging phenomena in microgrids full of power converters, how they propagate, interact, and can affect indicators of electric power quality, as well as the operation of the converters themselves. The analysis of real situations in microgrids implemented in Campinas with different characteristics (CampusGrid, ConGrid, LabREI, and Nanogrid DC) will serve to validate the models and propose methodologies for measurement and mitigation of problems. (AU)