一种多用途离网光伏电源系统的设计与实现

Design and Implementation of a Versatile Off-grid PV Source System

偏远山区和旅游景区地带由于远离城市中心电网,通常缺乏可靠的电力供应来维持基本的用电需求.为了解决这一问题,本文设计并实现了一种以STM32单片机为控制核心的离网型光伏电源.其设计重点是光伏电源系统的模型架构和功能设计.本系统可满足生活照明、灌溉、调温、可移动式便民设备等诸多系统的供电需求.同时,便携式的设计有利于系统扩容和拆卸,最大功率跟踪功能保证了系统良好的电能利用率.最后,实物测试表明:本系统供电稳定,能使各种负载保持良好的运行状态.

Due to the far distance between the remote areas and central cities,the mountainous scenic districts usually lack reliable power supply from centralized power grids to maintain the basic power demand.In order to solve the problem,an off-grid photovoltaic(PV)source system based on the STM32 micro-controller is designed and implemented in this paper.Moreover,the key of the system design is to model the architecture and contrive the function of the photovoltaic power system combining the PV sources.Furthermore,the versatile system suits the electricity consumption of many common systems,such as illumination,irrigation,attemperation and moveable public devices.Meanwhile,the portable structure of the PV source contributes to the enlargement and disassembly of the power system.And the maximum power point tracking(MPPT)technology is able to guarantee the optimal rate of utilizing electricity sufficiently.Ultimately,the test of common appliances in the study indicates that the output power of the designed system using the PV source is reliable and stable,which can provide a satisfactory operation state for various loads.