超级UPS中光伏发电单元的功率调控  

Power Regulation of PV Power Generation Unit Applied in Super UPS

作　　者：刘曌煜 李海津[1] 胡长生[1] 陈敏[1] 徐德鸿[1] 

机构地区：[1]浙江大学电气工程学院,杭州310027

出　　处：《电源学报》2017年第4期91-96,共6页Journal of Power Supply

基　　金：国家高技术研究发展计划(863计划)资助项目(2012AA053603)~~

摘　　要：超级UPS包含电网、燃气发电机、电池以及光伏等多种类型能源,是一种具有很高供电可靠性的电源系统。在这样的多能源储能系统中,光伏发电单元需要配合其他多种能源,在保证稳定性的前提下,通过不同模式的灵活切换,提高其电能利用率。针对超级UPS特点及其工作模式,讨论了光伏单元的功率调控,并针对此应用场合优化了传统的光伏最大功率点跟踪算法,最后在30 kW的平台上进行了初步验证。改进后的算法,可以在保证收敛性和跟踪精度的条件下,有效加快光伏最大功率点跟踪速度。Super UPSisan energy storage system composed of many energy sources, such as grid, gas turbine, and pho-tovoltaic （PV） etc, which can provide higher surety electricity power than traditional UPS. In such a multi-energy storage sys-tem, the photovoltaic power generation unit needs to coordinate a variety of other energy sources, and uses flexible switching different modes to maximize their energy efficiency on the premise of the stability. This paper analyzes the characteristics of super UPS and the operating mode of PV unit, discusses the power regulation of PV unit, and improves the traditional maxi-mum power point tracking!MPPT） strategy of PV to be applied in such applications. Finally, the control method is verified on an experimental platform preliminarily. The improved control method can effectively accelerate the maximum power tracking speed of the PV under the condition of ensuring convergence and the same tracking accuracy.

关 键 词：光伏发电单元 超级UPS&最大功率点跟踪MPPT 

分 类 号：TM46[电气工程—电器]