Power conversion in a grid‐connected residential PV system with energy storage using fuzzy‐logic controls,International Transactions on Electrical Energy Systems

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Power conversion in a grid‐connected residential PV system with energy storage using fuzzy‐logic controls
International Transactions on Electrical Energy Systems ( IF 1.9 ) Pub Date : 2020-10-08 , DOI: 10.1002/2050-7038.12659
Oluwasola O. Ademulegun ₁ , Andres F. Moreno Jaramillo ₂

Affiliation

Increasing implementations of renewable energy resources to migrate from fossil fuel based electric power to clean energies have been creating new technical challenges due to their integration into an existing electrical grid. In this research, a power electronic converter based on fuzzy‐logic controller is developed to govern the transfer and control of power in a grid‐connected residential photovoltaic (PV) system with battery storage. A bidirectional dc‐dc converter is designed for power transfer between the loads and the battery. A bidirectional ac‐dc converter is used as the interface between the PV array and the electricity grid. The fuzzy‐logic controller is designed to meet the user power requirement—with the PV array and the battery sized to meet the critical load requirement on site. The results indicate that the fuzzy‐logic‐based power conversion helped the system to adjust to off‐grid, low‐battery, full‐battery, and on‐grid power conditions. The main merit of the design is simplicity in being able to manage the limited supplies from the grid and the renewable PV installation using carefully sized storage that serves critical loads within specific days of power autonomy.

中文翻译：

使用模糊逻辑控制的具有储能的并网住宅光伏系统中的功率转换

由于将可再生能源整合到现有电网中，因此越来越多的可再生能源实施方式已从基于矿物燃料的电力向清洁能源迁移，这已经带来了新的技术挑战。在这项研究中，开发了一种基于模糊逻辑控制器的电力电子转换器，以控制带有电池存储的并网住宅光伏（PV）系统中的电力传输和控制。双向dc-dc转换器旨在在负载和电池之间进行功率传输。双向交流-直流转换器用作光伏阵列和电网之间的接口。模糊逻辑控制器的设计旨在满足用户的功率要求-PV阵列和电池的尺寸可满足现场的关键负载要求。结果表明，基于模糊逻辑的功率转换有助于系统适应离网，低电池，满电池和并网电源条件。该设计的主要优点是简单，能够使用精心设计的存储来管理电网和可再生光伏装置中的有限电源，该存储可在电力自主的特定天内为关键负载提供服务。

更新日期：2020-12-07

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