直流微电网中超级电容辅助LED照明技术的设计方法

Dilini Jayananda, N. Kularatna, D. Steyn-Ross
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引用次数: 14

摘要

能源效率是家用电器(包括照明)中使用的电源转换器的主要要求。家用直流电和直流微电网是为了克服能源效率问题而提出的相对较新的概念。直流微电网是由可再生能源和存储系统组成的局部能源网络。在许多现代白色家电中,通常被宣传为逆变器驱动,在动力传动系统中有一个交流-直流转换器,从交流230V, 50Hz开始。大多数家用白色家电,包括节能照明,都是内部直流驱动的,基于多个DC-DC转换器。家用电器的总效率是由每个转换阶段的效率的乘积决定的。如果不使用交直流转换的第一阶段,通过从直流电源(如太阳能)馈电,端到端效率(ETEE)将会增加。能源工程师现在正准备使用直流微电网技术。在这个项目中,LED照明负载由太阳能或其他可再生能源直流电源供电,12V LED照明是一个很好的起点,因为LED灯从直流值变化很大的正负直流电源工作。我们正在开发一种新技术,超级电容器辅助LED (SCALED)照明系统,该系统由太阳能电池板直接供电的直流母线供电,其中超级电容器(SC)组用于缓冲短期能源供应中断。该项目源于获得专利的SCALDO技术。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Design approach for Supercapacitor Assisted LED lighting (SCALED) technique for DC-microgrids
Energy efficiency is a main requirement in power converters used in domestic electrical goods including lighting. Using DC at home and DC-microgrids are relatively new concepts proposed to overcome the problems with energy efficiency. DC-microgrids are local energy networks which consist of renewable energy sources and storage systems. In many modern white goods, typically advertised as inverter driven, there is an AC-DC converter in the power drive train starting from AC 230V, 50Hz. Most domestic white goods, including energy efficient lighting are internally DC-driven and based on multiple DC-DC converters. Overall efficiency of a domestic appliance is determined by the multiplication of the efficiencies in each conversion stage. If the first stage of AC-DC conversion is not used, by feeding it from a DC source such as solar energy, end-to-end efficiency (ETEE) will be increased. Energy engineers are now getting ready to use DC-microgrid techniques. In this project where LED lighting loads are to be fed by solar or other renewable energy DC sources, 12V LED lighting is an excellent starting point, since LED lamps operate from plus or minus DC sources of widely varying DC values. We are developing a new technique, Supercapacitor Assisted LED (SCALED) lighting system powered by DC bus fed directly from solar panels, in which a supercapacitor (SC) bank is to be used to buffer short-term energy supply interruptions. This project derives from the patented SCALDO technique.
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