Discrete-Time Ripple Correlation Control for Maximum Power Point Tracking

被引：104
作者：
Kimball, Jonathan W. [1 ]
Krein, Philip T. [2 ]
机构：
[1] Missouri Univ Sci & Technol, Rolla, MO 65409 USA
[2] Univ Illinois, Urbana, IL 61801 USA
来源：
IEEE TRANSACTIONS ON POWER ELECTRONICS | 2008年 / 23卷 / 05期
关键词：
Maximum power point tracking (MPPT); optimization; photovoltaic (PV);
D O I：
10.1109/TPEL.2008.2001913
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：
Ripple correlation control (RCC) is a bigh-performance real-time optimization technique that has been applied to photovoltaic maximum power point tracking. This paper extends the previous analog technique to the digital domain. The proposed digital implementation is less expensive, more flexible, and more robust. With a few simplifications, the RCC method is reduced to a sampling problem; that is, if the appropriate variables are sampled at the correct times, the discrete-time RCC (DRCC) algorithm can quickly find the optimal operating point. First, the general DRCC method. is derived and stability is proven. Then, DRCC is applied to the photovoltaic maximum power point tracking problem. Experimental results verify tracking accuracy greater than 98% with an update rate greater than 1 kHz.
引用
收藏
页码：2353 / 2362
页数：10
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