Assessment of the Energy Efficiency of Three-Phase Induction Motors Powered by A Photovoltaic System

Q1 Economics, Econometrics and Finance

International Journal of Energy Economics and Policy Pub Date : 2024-05-08 DOI:10.32479/ijeep.15838

Narciso Castro Charris, Vladimir Sousa Santos, J. J. C. Eras, Jorge M. Mendoza Fandiño

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Abstract

This study aims to determine the energy efficiency of three-phase induction motors (TIM) powered when operated with photovoltaic systems (PVS). The environmental advantages of photovoltaic systems (PVS) are very well known. However, there are still challenges related to energy quality, electricity generation instability, failure in frequency regulation, instability in reactive power, and harmonics generation. However, the impact of PVS on TIM efficiency has not been thoroughly explored. This research compares a TIM's electromechanical characteristics and efficiency when powered by a conventional electrical grid versus a PVS. Experimental studies revealed that when powered by the PVS, the TIM experienced increased voltage and higher voltage and current harmonics compared to grid power. These electrical difficulties, attributed to the PVS inverter, resulted in a 2.7% decrease in TIM efficiency compared to grid power. Modeling conducted under actual load variation conditions demonstrated a 2.6% increase in energy consumption when powered by the PVS compared to grid power. Based on these findings, PVS installers are advised to consider the energy quality provided by these systems, as it may affect the efficient operation of TIM, leading to increased energy consumption.

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光伏系统驱动的三相感应电机能效评估

本研究旨在确定使用光伏系统（PVS）供电的三相感应电动机（TIM）的能效。光伏系统（PVS）的环保优势众所周知。然而，在能源质量、发电不稳定性、频率调节故障、无功功率不稳定性和谐波产生等方面仍存在挑战。然而，光伏系统对 TIM 效率的影响尚未得到深入探讨。本研究比较了由传统电网和光伏系统供电时 TIM 的机电特性和效率。实验研究表明，与电网供电相比，光伏系统供电时，TIM 的电压升高，电压和电流谐波增大。由于 PVS 逆变器造成的这些电气困难，导致 TIM 效率比电网功率降低了 2.7%。在实际负载变化条件下进行的建模显示，与电网供电相比，由 PVS 供电时的能耗增加了 2.6%。基于这些发现，建议光伏系统安装人员考虑这些系统提供的能源质量，因为它可能会影响 TIM 的高效运行，导致能耗增加。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Energy Economics and Policy Economics, Econometrics and Finance-Economics, Econometrics and Finance (all)

CiteScore

3.20

自引率

0.00%

发文量

296

审稿时长

14 weeks

期刊介绍： International Journal of Energy Economics and Policy (IJEEP) is the international academic journal, and is a double-blind, peer-reviewed academic journal publishing high quality conceptual and measure development articles in the areas of energy economics, energy policy and related disciplines. The journal has a worldwide audience. The journal''s goal is to stimulate the development of energy economics, energy policy and related disciplines theory worldwide by publishing interesting articles in a highly readable format. The journal is published bimonthly (6 issues per year) and covers a wide variety of topics including (but not limited to): Energy Consumption, Electricity Consumption, Economic Growth - Energy, Energy Policy, Energy Planning, Energy Forecasting, Energy Pricing, Energy Politics, Energy Financing, Energy Efficiency, Energy Modelling, Energy Use, Energy - Environment, Energy Systems, Renewable Energy, Energy Sources, Environmental Economics, Oil & Gas .