Adaptive Step Size With Adaptive-Perturbation-Frequency Digital MPPT Controller for a Single-Sensor Photovoltaic Solar System

被引：173
作者：
Jiang, Yuncong [1 ]
Abu Qahouq, Jaber A. [1 ]
Haskew, Tim A. [1 ]
机构：
[1] Univ Alabama, Dept Elect & Comp Engn, Tuscaloosa, AL 35487 USA
来源：
IEEE TRANSACTIONS ON POWER ELECTRONICS | 2013年 / 28卷 / 07期
关键词：
Adaptive-perturbation-frequency perturb and observe (P&O) algorithm; adaptive step size; dc-dc converters; maximum power point tracking (MPPT); photovoltaic (PV); solar energy; POWER POINT TRACKING; PV; OPTIMIZATION; ARRAY;
D O I：
10.1109/TPEL.2012.2220158
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：
This paper presents a load-current-based maximum power point tracking (MPPT) digital controller with an adaptive-step-size and adaptive-perturbation-frequency algorithm. Only one sensor is needed in the controller circuitry since the MPPT controller is only utilizing the load current information. By utilizing a variable step-size algorithm, the speed, accuracy, and efficiency of the PV system MPPT are improved when compared to the fixed step-size load-current-based algorithm. Furthermore, the proposed adaptive algorithm utilizes a novel variable perturbation frequency scheme which further improves the controller speed. The concept and operation of the load-current adaptive-step-size and adaptive-perturbation-frequency MPPT controller are presented, analyzed, and verified by results obtained from a proof-of-concept experimental prototype.
引用
收藏
页码：3195 / 3205
页数：11
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