太阳能光伏发电作为太阳能的重要应用方式越来越受到人们的重视,但是太阳能受天气条件限制的缺点,需要配备补充能源。本文选择市电作为补充能源,提出了一种太阳能光伏/市电联合供电系统。系统由太阳电池、市电、DC-DC变换器、功率因数校正器组成。系统中存在两个供电电源,需要设计合理的能量管理控制策略来确保两个输入源协调工作。系统能量管理的核心是根据太阳电池和负载的工作状态,控制系统工作在合适的模式,以此来控制系统能量流。在实验室中搭建了一套2kW系统样机,通过实验验证了所提的系统结构和能量管理控制策略的有效性。%Photovoltaic generation,which is an important application way of solar,is attracting more and more attention.However,its output power is intermittent with different environment.A backup power source is necessary.Grid is chosen to be the backup power source in this paper,and a hybrid photovoltaic/Grid power system is proposed.It is composed of solar cells,grid,a DC-DC converter,and a power factor correction.In order to enable these two source work coordinate,it is necessary to manage the power.The key point of power management is to control the system to work in proper mode,according to different situation of solar cell and load.A 2kW hybrid system is built in the lab.The experimental results verified the proposed power structure and energy management.
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