An Improved Perturbation Observation Method with Variable

Authors

  • Xiaotian Wu
  • Zegang Sun

DOI:

https://doi.org/10.54097/ajst.v6i1.9087

Keywords:

Oscillation and misjudgment, Disturbance compensation, Simulink simulatin.

Abstract

Aiming at the problems of oscillation and misjudgment in traditional MPPT technology, the influence of voltage disturbance step size on the tracking of the maximum power point is studied. On this basis, an improved method based on the slope and space division of output characteristic curve is proposed. The voltage disturbance is carried out by using a fixed step length outside the set search interval, so that the photovoltaic cells can quickly work near the maximum power point. Reduce the early search time; When the photovoltaic cell is working near the maximum power point, the voltage disturbance is carried out with small steps to avoid the oscillation caused by repeated pulsation of the operating point around the maximum power point. Meanwhile, the search space is further divided to reduce the search interval. Static and dynamic lighting modes were simulated by Simulink.

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References

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Shuo Zhang, Lingding Lei, Chengning Zhang, Tian Liu, Shuli Wang.An Improved Deadbeat Predictive Current Control Method for SPMSM Drives with a Novel Adaptive Disturbance Observer[J]. Journal of Beijing Institute of Technology, 2023, 32(01):107-123.

Alejandro Latorre, Wilmar Martinez, Camilo A.Cortes. Average Current Control with Internal Model Control and Real-time Frequency Decoupling for Hybrid Energy Storage Systems in Microgrids[J]. Journal of Modern Power Systems and Clean Energy,2023,11(02):511-522.

T. Kerekes, R. Teodorescu, P. Rodríguez, G. Vazquez, E. Aldabas. A new high-efficiency single-phase transformerless PV inverter topology[J]. IEEE Trans. Ind. Electr., 2011, 58(1): 184-191.

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Published

04-06-2023

Issue

Section

Articles

How to Cite

An Improved Perturbation Observation Method with Variable. (2023). Academic Journal of Science and Technology, 6(1), 156-161. https://doi.org/10.54097/ajst.v6i1.9087

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