直流电器及家居直流供用电系统研究与应用

Research and Application of DC Electrical Appliances and Home DC Power Supply System

随着电力电子技术快速发展和人民生活水平日益提升,推动对家用电器安全、节能、智能、精细控制等各方面发展,同时,新能源光伏、储能不断向民用领域延伸,对新能源就近高效利用、电器与新能源的无缝连接以及电网接入友好等诉求日益凸显。通过研究家用电器工作原理及应用场景特征,分析了家用电器技术应用现状和发展趋势,阐述了分布式新能源与电器设备逐步向直流化过度的趋势。以此为基础提出一种高低压分区的家居安全用电系统设计思路及未来家居供用电系统设计方案,搭建了一套采用直流方式组织光伏、储能、直流负载及能源管理装置构成的家居直流供用电系统,论证了家庭直流安全、高效供用电系统应用的可行性。

With the rapid development of power electronics technology and the improvement of people’s living standard,it promotes the development of household appliances security,energy saving,intelligence,fine control and so on.At the same time,new energy photovoltaic and energy storage continue to extend to the civil field,and the demands of close and efficient utilization of new energy,seamless connection between electrical appliances and new energy,and friendly access to power grid have become increasingly prominent.By studying the working principle and application scene characteristics of household electrical appliances,this paper analyzes the application status and development trend of household electrical appliances technology,and expounds the trend of gradual transition of distributed new energy and electrical equipment to direct fluidization.On this basis,a design idea of home safety power supply system with high and low voltage partition and a design scheme of home power supply system in the future are put forward.A set of household DC power supply system composed of photovoltaic,energy storage,DC load and energy management device is built,and the feasibility of the application of household DC safety and high efficiency power supply system is demonstrated.