scholarly journals Design Procedure to Convert a Maximum Power Point Tracking Algorithm into a Loop Control System

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4550
Author(s):  
Moacyr A. G. de Brito ◽  
Victor A. Prado ◽  
Edson A. Batista ◽  
Marcos G. Alves ◽  
Carlos A. Canesin
Keyword(s):  
Control System ◽  
Transfer Functions ◽  
Maximum Power Point Tracking ◽  
Design Procedure ◽  
Maximum Power ◽  
Maximum Power Point ◽  
Control Loops ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Power Point

This paper presents a novel complete design procedure to convert a maximum power point tracking (MPPT) algorithm into a control system. The MPPT algorithm can be tuned by employing any control system design. In this paper, we adopted Bode diagrams using the criteria of module and phase as the power electronics specialists are habituated with such concepts. The MPPT control transfer functions were derived using the average state equations and small-signal analysis. The control loops were derived for power and voltage control loops. The design procedure was applied to the well-known perturb and observe (P&O) and incremental conductance (IC) algorithms, returning the P&O based on PI and IC based on PI algorithms. Such algorithms were evaluated through simulation and experimental results. Additionally, we showed that the proposed design methodology can optimize energy harvesting, allowing algorithms to have outstanding tracking factors (above 99%) and adaptability characteristics.

scholarly journals The maximum power point tracking based-control system for small-scale wind turbine using fuzzy logic

2020 ◽  
Vol 10 (4) ◽  
pp. 3927 ◽  
Author(s):  
Quang-Vi Ngo ◽  
Chai Yi ◽  
Trong-Thang Nguyen
Keyword(s):  
Control System ◽  
Wind Turbine ◽  
Fuzzy Controller ◽  
Maximum Power Point Tracking ◽  
Maximum Power ◽  
Small Scale ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Power Point

This paper presents the research on small-scale wind turbine systems based on the Maximum Power Point Tracking (MPPT) algorithm. Then propose a new structure of a small-scale wind turbine system to simplify the structure of the system, making the system highly practical. This paper also presented an MPPT-Fuzzy controller design and proposed a control system using the wind speed sensor for small-scale wind turbines. Systems are simulated using Matlab/Simulink software to evaluate the feasibility of the proposed controller. As a result, the system with the MPPT-Fuzzy controller has much better quality than the traditional control system.

scholarly journals An Approval of MPPT Based on PV Cell’s Simplified Equivalent Circuit During Fast-Shading Conditions

Electronics ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 1060 ◽  
Author(s):  
Rajput ◽  
Averbukh ◽  
Yahalom ◽  
Minav
Keyword(s):  
Control System ◽  
Maximum Power Point Tracking ◽  
Maximum Power ◽  
Global Maximum ◽  
Tracking Systems ◽  
Maximum Power Point ◽  
Partial Shading ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Power Point

The partial shading conditions significantly affect the functionality of solar power plants despite the presence of multiple maximum power point tracking systems. The primary cause of this problem is the presence of local maxima in the power–current and/or power–voltage characteristic curves that restrict the functionality of the conventional maximum power point tracking systems. The present article proposes a modified algorithm based on the simplified equivalent circuit of solar cells to improve the functionality of traditional maximum power point tracking systems. This algorithm provides a method for regularly monitoring the photo-current of each solar module. The upper and lower boundaries of the regulating parameter such as current or voltage are decided very precisely, which is helpful to find the location of the global maximum. During a sequential search, the control system accurately determines the lower and upper boundaries of the global maximum. Simultaneously, the maximum power point tracking system increases the photovoltaic current up to one of these boundaries and applies one of the conventional algorithms. Additionally, the control system regularly monitors the photovoltaic characteristics and changes the limits of regulating parameter concerning any change in global maximum location. This proposed method is fast and precise to locate the global maximum boundaries and to track global maximum even under fast-changing partial shading conditions. The improved performance and overall efficiency are validated by simulation study for variable solar irradiance.

Comparison of Methods of Maximum Power Point Tracking of Photovoltaic Cells

2013 ◽  
Vol 380-384 ◽  
pp. 3362-3365
Author(s):  
Lan Li ◽  
Yong Hui He ◽  
Bo Wang
Keyword(s):  
Control System ◽  
Maximum Power Point Tracking ◽  
Photovoltaic Cells ◽  
Maximum Power ◽  
Tracking Accuracy ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Power Point ◽  
Observation Method

According to engineering mathematics model of solar photovoltaic cells, a simulation model of photovoltaic cells was established in Matlab. In view of problem that it is difficult to get higher tracking accuracy and response speed by use of perturbation and observation method which applied fixed perturbation step, the paper proposed an improved perturbation and observation method based on variable step. Through simulating photovoltaic cells control system, simulation curves of two kinds of methods of maximum power point tracking were compared. The simulation results show that the photovoltaic cells control system can track maximum power point more quickly and has better stability at the maximum power point by use of the improved perturbation and observation method.

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