直流与交流分布:揭示了直流在当今能源格局中的效率优势
Asfand Haroon1, Hasan Erteza Gelani2, Hira Tahir3
1Department of Electrical Engineering, University of Engineering and Technology, Lahore, Pakistan.
PloS one
|May 9, 2025
概括
高效功率电子转换器 (PEC) 的兴起正在恢复直流 (DC) 与交流 (AC) 辩论. 分析表明DC为屋顶太阳能集成在家中提供了显著的效率优势.
科学领域:
- 电气工程 电气工程
- 可再生能源系统可再生能源系统
- 电力电子 电力电子 电力电子
背景情况:
- 21世纪,屋顶太阳能电池板的安装量增加,这是由于电力电子转换器 (PEC) 的进步所推动的.
- 历史上的AC主导地位受到DC复兴的挑战,特别是在住宅能源系统中.
- 这就需要对现代家庭的交流和直流进行现实的分布尺度比较.
研究的目的:
- 为住宅屋顶太阳能集成进行交流和直流电力分配的比较分析.
- 在各种条件下评估直流系统与交流系统的效率.
- 为电力行业提供有关DC采用的数据驱动的见解.
主要方法:
- 使用来自能源信息管理局 (EIA) 的现代家庭能源数据开发了一个自下而上的数学模型.
- 在不同场景中进行了比较分析,这些场景具有不同的PEC效率和每日负载波动.
- 场景还包括多个PEC效率和不同的屋顶太阳能容量.
主要成果:
- 对比分析表明,直流电比交流电的效率优势.
- 在考虑的情景中,有利于直流的特定效率增长为1.966%,1.41%和1.17%.
- 这些结果突显了DC在住宅太阳能应用中的性能优势.
结论:
- 与住宅屋顶太阳能集成的交流系统相比,直流系统显示出可衡量的效率优势.
- 建议进一步提高直流系统的效率,以巩固其对未来电力行业决策的地位.
- 该研究支持考虑DC在分销规模上广泛采用.
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