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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 UPS contains many types of energy sources such as power grid, gas generator, battery and photovoltaic. It is a kind of power supply system with high power supply reliability. In such a multi-energy energy storage system, the photovoltaic power generation unit needs to cooperate with other kinds of energy sources to improve the utilization ratio of electric energy through different modes of flexible switching under the premise of ensuring the stability. In view of the characteristics of super UPS and its operating mode, the power regulation of PV units is discussed. The traditional MPPT algorithm is optimized for this application. Finally, a preliminary verification is carried out on a 30 kW platform. The improved algorithm can effectively speed up the maximum power point tracking of photovoltaic under the conditions of ensuring convergence and tracking accuracy.