Work

EMC Issues in High-Power Grid-Connected Photovoltaic Plants: An Update After 15 Years

Year: 2024

Type: article

Abstract: This article revises and updates the electromagnetic compatibility (EMC) challenges commonly encountered in utility-scale grid-connected photovoltaic (PV) systems in light of modern trends. This article examines the issues related to the conductive and radiated radio-frequency disturbances, in the range from 150 kHz to 1 GHz, of multi-MWp PV plants as designed nowadays, with high-power bifacial modules, single-axis trackers, and decentralized high-density inverters. The main features include the extensive dc and ac cabling, the capacitance toward the Earth of the PV source, the common-mode disturbance caused by inverters, the effect of safety and functional grounding, the galvanic isolation provided by step-up power transformers, and the presence of resonant circuits for common-mode leakage currents. Measurements in situ for both conducted and radiated disturbances in a 19.87 MWp plant placed in Ferrandina, South Italy, are presented and discussed. Guidelines for achieving anEMC functional safety by designare provided, raising from the analysis of the measured data.

Source: IEEE Transactions on Electromagnetic Compatibility

DOI: 10.1109/temc.2024.3440848

Authors: Erika Stracqualursi, Gianfranco Di Lorenzo, Luigi Calcara, Rodolfo Araneo

Institution: Sapienza University of Rome

Language: English

Topic: Electromagnetic Compatibility and Noise Suppression

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: hybrid

Estimated APC paid: $2,495