Journal of Engineering Research

The popularization of electric vehicle charging piles poses new challenges to power quality, mainly in terms of voltage fluctuations and harmonic interference. This thesis aims to explore the research and practice of power quality control technology for electric vehicle charging piles. By analyzing the impact of existing charging piles on the power grid, a series of optimization schemes are proposed to improve power quality. The research first outlines the key factors affecting the power quality of charging piles. Then, it discusses in detail several effective control strategies and technical means, including active filtering technology, reactive power compensation, and intelligent control systems, and verifies them with practical cases. The rational application of these technologies can significantly improve the power quality after the charging piles are connected to the power grid, providing strong support for the sustainable development of electric vehicles.

Electric vehicles; Charging piles; Power quality; Active filtering; Intelligent control