Maximum Power Tracking Control on Photovoltaic Grid-connected Generating System Without DC Current Sensor

LI Zhongyu; WU Xiaobo; MING Lei; CUI Xianzheng; CHEN Yao

doi:10.14044/j.1674-1757.pcrpc.2016.03.021

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Maximum Power Tracking Control on Photovoltaic Grid-connected Generating System Without DC Current Sensor

更新时间：2024-09-14

- Maximum Power Tracking Control on Photovoltaic Grid-connected Generating System Without DC Current Sensor
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 37, Issue 3, Pages: 105-109(2016)
- 作者机构：
  
  1. 中国石油大学(华东)信息与控制工程学院
  2. 中国石油工程建设公司华东设计分公司
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2016.03.021
  CLC： TM615
- Published：2016，
- 稿件说明：
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[1]李忠玉,吴晓波,明磊,崔仙政,陈瑶.无直流电流传感器的光伏并网发电系统最大功率跟踪控制[J].电力电容器与无功补偿,2016,37(03):105-109.

LI ZHONGYU, WU XIAOBO, MING LEI, et al. Maximum Power Tracking Control on Photovoltaic Grid-connected Generating System Without DC Current Sensor. [J]. Power capacitor & reactive power compensation, 2016, 37(3): 105-109.
[1]李忠玉,吴晓波,明磊,崔仙政,陈瑶.无直流电流传感器的光伏并网发电系统最大功率跟踪控制[J].电力电容器与无功补偿,2016,37(03):105-109. DOI： 10.14044/j.1674-1757.pcrpc.2016.03.021.

LI ZHONGYU, WU XIAOBO, MING LEI, et al. Maximum Power Tracking Control on Photovoltaic Grid-connected Generating System Without DC Current Sensor. [J]. Power capacitor & reactive power compensation, 2016, 37(3): 105-109. DOI： 10.14044/j.1674-1757.pcrpc.2016.03.021.

摘要

光伏并网发电系统中光伏阵列的输出特性易受周围环境温度、光照强度等因素的影响

为了提高光伏阵列的能量转换效率

需要对其进行最大功率追踪控制。本文提出了一种基于扰动观察法的最大功率追踪方法

该方法无需检测直流侧电流

而是通过直流电压与并网电流计算最大功率点

进而对并网电流进行控制

实现最大功率追踪。该方法避免了直流电流传感器的使用

节约了系统成本。通过仿真与实验

验证了所提方法的正确性。

Abstract

The output characteristic of the photovoltaic array（PV） in photovoltaic-connected generating system is likely influenced by such factors as ambient temperature and sunshine intensity. The maximum power tracking and control are needed in order to improve the energy conversion efficiency of the PV module. In this paper

a kind of maximum power tracking method based on perturb & observation（P&O）method is proposed

which does not need to detect current at the DC side

but calculate the maximum power point by way of DC voltage and grid-connected current so to control the current and achieve the tracking of maximum power. This method avoids the use of DC current sensor and save the system cost. The correctness of the proposed method is verified by simulation and experiment.

关键词

光伏阵列最大功率追踪扰动观察法直流电流

Keywords

photovoltaic arraymaximum power tracking（MPPT）perturb & observation（P&O）methodDC current sensor

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