The Step-power Method Study for the Maximum Power Tracking of Single-stage Photovoltaic Grid-connected Inverter

被引：0
|
作者：
Zhang Qi [1 ]
Tian Xiaoye [1 ]
Tian Dong [1 ]
Liu Zhao [1 ]
Li Minyuan [1 ]
Sun Xiangdong [1 ]
机构：
[1] Xian Univ Technol, Dept Elect Engn, Xian, Shaanxi, Peoples R China
来源：
2014 INTERNATIONAL ELECTRONICS AND APPLICATION CONFERENCE AND EXPOSITION (PEAC) | 2014年
基金：
中国国家自然科学基金;
关键词：
single-stage grid-connected inverter; the maximum power point tracking (MPPT); Step-power algorithm; phase diagram analysis; MPPT METHOD; PV SYSTEMS;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Based on the characteristics of PV array model, static and dynamic mathematical models of the single-stage PV power grid-connected generation system under the condition of power control are established in this paper. The voltage trajectory of PV array is studied by means of phase diagram analysis, which provides the basis for designing the maximum power point tracking algorithm. A step-power tracking algorithm is proposed according to the trajectory analysis of PV array voltage. Without the DC side current sensor, the algorithm overcomes the shortcomings such as the collapse of the bus voltage caused by traditional perturbation and observation method, the incorrect tracking of maximum power point in the weak light case. The validity and correctness of this method is verified by simulations and experiments.
引用
收藏
页码：578 / 583
页数：6
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