Research Article
Research on Optimal MPPT of Photovoltaic System Based on Disturbance Observation Method
@INPROCEEDINGS{10.4108/eai.6-6-2021.2307652, author={Jianhua Deng and Yanping Wang}, title={Research on Optimal MPPT of Photovoltaic System Based on Disturbance Observation Method}, proceedings={Proceedings of the 8th EAI International Conference on Green Energy and Networking, GreeNets 2021, June 6-7, 2021, Dalian, People’s Republic of China}, publisher={EAI}, proceedings_a={GREENETS}, year={2021}, month={8}, keywords={photovoltaic system maximum power tracking pid control}, doi={10.4108/eai.6-6-2021.2307652} }- Jianhua Deng
Yanping Wang
Year: 2021
Research on Optimal MPPT of Photovoltaic System Based on Disturbance Observation Method
GREENETS
EAI
DOI: 10.4108/eai.6-6-2021.2307652
Abstract
The biggest problem with the photovoltaic power generation system is that the energy utilization rate is too low due to the instability of its power. Therefore, a reasonable method must be developed to track its maximum power so that the photovoltaic cell can output the maximum power at all times. Compared with the large oscillation at the maximum power point of the traditional disturbance observation method, an improved disturbance observation method with PID control duty cycle is proposed. The duty cycle of the boost circuit is controlled by the PID algorithm and the disturbance step length of the P-D characteristic is changed. Match the load impedance with the input impedance of the photovoltaic cell, so the photovoltaic cell outputs the maximum power, increasing the tracking efficiency.