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Author: search.filters.author.Lapkitticharoenchai, YuttikarnSubject: search.filters.subject.Temperature

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    Item type:Publication,
    Techniques of Maximum Power Point Tracking by Using Perturb and Observe and Lookup Table Methodologies
    (2025-01-01)
    Lapkitticharoenchai, Yuttikarn
    ;
    Jangwanitlert, Anuwat
    – In the typical Photovoltaic (PV) system, the Perturb and Observe (P&O) technique is the algorithm that is used for tracking the Maximum Power Point (MPP). It enables the photovoltaic (PV) panel to reach the maximum power output. However, there are two main existing problems which are the slow speed of the P&O, and an oscillation of power around MPP. The problems lead to a reduction of the power output of the PV panel. This paper presents a new hybrid methodology for a faster Maximum Power Point Tracking (MPPT) application. The proposed method consists of the Lookup Table, together with the P&O techniques. The results show that the Lookup Table employs measured values of an irradiance, a temperature, and a Duty Cycle to achieve MPPT precisely. Consequently, the Lookup Table’s tracking speed is significantly faster than P&O and the oscillation of tracking power is eliminated. Moreover, the new hybrid methodology also uses P&O to record irradiance, temperature, and Duty Cycle data into the table. Once sufficient data are collected and under defined the conditions, the system automatically select to the Lookup Table for operation.
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    Novel MPPT Methodology by using Daily Recorded Lookup Table Technique: Relationship between Duty Cycle and Temperature
    (2022-01-01)
    Lapkitticharoenchai, Yuttikarn
    ;
    Jangwanitlert, Anuwat
    This paper shows the new technique of tracking Maximum Power Point (MPP) that is faster than P&O one. Furthermore, it can reduce the swing of MPP but P&O technique never deal with. This technique uses automatically selective technique between P&O and Lookup Table to reach MPP. At first, the controller selects P&O technique to track MPP and record the data on relationship between temperature and duty cycle into the Table. When the data in the Table are more enough and the recent temperature value is under defined condition, the controller will change P&O to Lookup Table technique automatically. However, the recorded data in the Table will be reset every day for tracking MPP accurately.