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International Conference on Intelligent Sustainable Systems (ICISS)

作者： Verma, Deepak Nema, Savita Nema, R. K. Birla Inst Technol Mesra Deptt Elect & Elect Engg Jaipur Campus Ranchi Rajasthan India Maulana Azad Natl Inst Technol Deptt Elect Engg Bhopal MP India

ISBN: (纸本)9781538619599

With the increased awareness for environmental preservation and the drive to reduce greenhouse emissions, there has been significant shift towards renewable energy sources. Solar energy being clean and commercially competitive, have been one of the most popular choice. In this paper solar photovoltaic (SPV) technology along with the perturb and observe (P&O) method of maximum power point tracking (MPPT) is presented. The research objectives are formulated in context of the most popular MPPT technique that is P&O and its implementation is presented in this paper. Implementation is done using physical library given in MATLAB called SIMSCAPE.

关键词： Solar Photovotaic maximum power point tracking perturb and observe method MATLAB SIMSCAPE

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Improved hybrid algorithms-based MPPT algorithm for PV system operating under severe weather conditions

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IET POWER ELECTRONICS 2019年第4期12卷 703-711页

作者： Bataineh, Khaled Jordan Univ Sci & Technol Dept Mech Engn Irbid Jordan

This study aims to provide a comparison between several maximum power point tracking (MPPT) algorithms for PV system under severe weather conditions. Two MPPT hybrid algorithms are proposed, namely (a) hybrid combination of fuzzy logic controller (FLC) and the incremental conductance (IC) and (b) MPPT controller integrates FLC and perturb and observe (P&O) method. The two developed hybrid algorithms combined the strength of both P&O, IC with FLC in single framework. MATLAB/Simulink is used to investigate the response of both algorithms. Several weather conditions are simulated: (i) uniform irradiation, (ii) sudden changing, and (iii) partial shading. Under partial shading on PV panel, multi-peaks appear in power-voltage characteristics of the panel. Simulation results showed that ability of FLC to track MPP degrade significantly when testing at weather conditions far from those used for training. Finally, the proposed hybrid algorithms successfully eliminate the previous limitations associated with FLC, IC, and P&O algorithms individually with efficiency exceeds 97%.

关键词： photovoltaic power systems fuzzy control maximum power point trackers power generation control fuzzy logic controller FLC partial shading PV panel improved hybrid algorithm-based MPPT algorithm PV system operating maximum power point tracking algorithms MPPT hybrid algorithms incremental conductance power-voltage characteristics perturb and observe method

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A photovoltaic powered electrolysis converter system with maximum power point tracking control

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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 2020年第16期45卷 9293-9304页

作者： Sahin, Mustafa Ergin Recep Tayyip Erdogan Univ Dept Elect & Elect Engn Rize Turkey

One of the main problems for renewable and other innovative energy sources is the storage of energy for sustainability. This study focuses on two different scenarios to benefit from solar energy more efficiently. Photovoltaic (PV) energy is converted to the desired voltage level using a buck converter for generating hydrogen with electrolysis process. A maximum power point tracking (MPPT) algorithm is used to benefit from the photovoltaic sources more efficiently. The basic electrolysis load for hydrogen production needs low voltage and high current and controlled sensitively to supply these conditions. The photovoltaic powered buck converter for electrolysis load was simulated in MATLAB/Simulink software using a perturb and observe (P and 0) MPPT algorithm and PI controller. The simulation results show that in normal, short circuit and open circuit working conditions the PV and load voltages are stabilized. The efficiency of the proposed system is reached more than 90% for high irradiance levels. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

关键词： Hydrogen energy generation from PV Electrolysis process DC-DC buck converter Proportional integral control Maximum power point tracking perturb and observe method

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Efficiency optimisation of a microcontroller-based PV system employing a single sensor fuzzy-logic controller

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IET POWER ELECTRONICS 2018年第3期11卷 539-547页

作者： Abdourraziq, Mohamed Amine Abdourraziq, Sarah Maaroufi, Mohamed Mohammed V Univ Dept Elect Engn Ecole Mohammadia Ingenieurs Rabat Morocco

This study presents a particular fuzzy-logic control (FLC) to produce the maximum power point of the photovoltaic system. The particularity of the single sensor FLC (SSFLC) method uses single current sensor and improves the drawbacks of response time and accuracy of the perturb and observe (P&O) method. Compared with the P&O method, the SSFLC improves the response time, precision at steady state and reduces the steady-state oscillation. To confirm its high performance, the proposed SSFLC and P&O algorithms have been evaluated by simulation utilising MATLAB/Simulink under linear and nonlinear profiles of weather conditions. The experimental results demonstrate that the effectiveness of the SSFLC method is an average 95.8% compared to 83.3%of the P&O method.

关键词： microcontrollers photovoltaic power systems fuzzy control electric sensing devices maximum power point trackers perturbation techniques power generation control efficiency optimisation microcontroller-based PV system single sensor fuzzy-logic controller maximum power point photovoltaic system single sensor FLC method SSFLC method single current sensor perturb and observe method P& O method steady-state oscillation MATLAB Simulink

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Maximum power point tracking for the permanent magnet synchronous generator-based WECS by using the discrete-time integral sliding mode controller with a chattering-free reaching law

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IET POWER ELECTRONICS 2017年第13期10卷 1751-1758页

作者： Yazici, Irfan Yaylaci, Ersagun Kursat Sakarya Univ Dept Elect Elect Engn TR-54050 Sakarya Turkey

In this study, a single sensor-based maximum power point tracking (MPPT) algorithm is presented for permanent magnet synchronous generator-based wind energy conversion system (WECS). The MPPT method used in this study uses only the wind speed sensor to generate the reference point required for the maximum power. A discrete-time controller is proposed to bring the system to the reference point determined by the MPPT algorithm. The designed MPPT controller consisting of a new discrete-time reaching-law approach and a discrete-time integral sliding mode control (SMC). The designed discrete-time SMC-based controller is implemented by using an Acorn RISC Machine (ARM)-based LM4F120 microcontroller, and its performance is examined on a WECS emulator prepared in the laboratory. The results got from the real-time studies prove that the proposed controller has the satisfactory performance to bring the system to the MPP. The performance of the proposed controller is also compared with the conventional sliding mode controller and perturb and observe method. The obtained results proved that the proposed controller has a better performance than the other controllers in terms of the settling time and output voltage's ripple.

关键词： permanent magnet generators synchronous generators wind power plants variable structure systems maximum power point trackers microcontrollers power generation control permanent magnet synchronous generator WECS discrete-time integral sliding mode controller chattering-free reaching law single sensor-based maximum power point tracking algorithm MPPT algorithm wind energy conversion system wind speed sensor discrete-time reaching-law approach SMC ARM-based LM4F120 microcontroller perturb and observe method

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A Photovoltaic Power System Using a High Step-up Converter for DC Load Applications

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ENERGIES 2013年第2期6卷 1068-1100页

作者： Tseng, Sheng-Yu Wang, Hung-Yuan Chang Gung Univ Kwei Shan Tao Yuan Dept Elect Engn Tao Yuan Taiwan

This paper presents a power system using a high step-up converter for dc load applications. The high step-up converter adopts a boost converter with interleaved mode and a coupled inductor to raise its powering ability and increase its step-up voltage ratio, respectively. In order to increase conversion efficiency, an active clamp circuit is introduced into the proposed one to provide soft-switching features to reduce switching losses. Moreover, switches in the converter and active clamp circuit are integrated with a synchronous switching technique to reduce circuit complexity and component counts, resulting in a lower cost and smaller volume. A perturb and observe method is adopted to extract the maximum power from photovoltaic (PV) arrays. Furthermore, a microchip associated with PWM IC is used to implement maximum power point tracking operation, voltage regulation and power management. Finally, a prototype PV power system with 400 V/6 A has been implemented for verifying the feasibility of the proposed PV power system. It is shown to be suitable for PV energy conversion applications when the duty ratios of switches in the dc/dc converter are less than 0.5.

关键词： photovoltaic power system high step-up converter boost converter perturb and observe method

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Enhanced perturb and observe control for addressing power loss under rapid load changes using a buck-boost converter

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ENERGY REPORTS 2024年 12卷 1503-1516页

作者： Djilali, Abdelkadir Belhadj Yahdou, Adil Benbouhenni, Habib Alhejji, Ayman Zellouma, Dalal Bounadja, Elhadj Hassiba Benbouali Univ Fac Technol Dept Elect Engn Lab Genie Elect & Energies Renouvelables LGEER Chlef Algeria Nisantasi Univ Fac Engn & Architecture Dept Elect & Elect Engn TR-34481742 Istanbul Turkiye Yanbu Ind Coll Dept Elect Engn Yanbu Industrial City Yanbu 46452 Saudi Arabia Univ El Oued El Oued Algeria

Many researchers have focused on improving the efficiency of photovoltaic (PV) systems by enhancing their control mechanisms to more consistently operate in the PV panels' maximum power points. The predominant method used in these studies is the perturb and observe (P&O) method. However, this method faces challenges of drift when encountering rapid changes in resistive load, which completely inhibits them from addressing the problem of power loss. Additionally, the traditional P&O method suffers from oscillation issues. Here, an innovative control method is presented to improve the duty cycle and enable the handling of the challenges associated with sudden and rapid changes in resistive loads. A buck-boost power converter is implemented as an impedance adaptor to maintain operation at the maximum power point. The efficiency of the proposed modified P&O algorithm was evaluated using MATLAB software and compared to the traditional P&O algorithm across various operating scenarios. The simulation results show that the proposed method is significantly more efficient and effective than the traditional P&O algorithm, indicating its potential to enhance the efficiency of PV systems and increase their ability to adapt to changes in resistive load.

关键词： Buck-boost converter Photovoltaic systems Maximum power point tracking perturb and observe method

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MPPT algorithm for thermoelectric generators based on parabolic extrapolation

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IET GENERATION TRANSMISSION & DISTRIBUTION 2019年第6期13卷 821-828页

作者： Bijukumar, Bepinkumar Raam, Arunadevi Ganesan Kaushik Ganesan, Saravana Ilango Nagamani, Chilakapati Reddy, Maddikara Jaya Bharata Natl Inst Technol Dept Elect & Elect Engn Tiruchirappalli Tamil Nadu India

In this study, a maximum power point tracking (MPPT) technique based on parabolic extrapolation has been presented for thermoelectric generator systems. Conventional MPPT methods require a closed-loop controller and perturb and observe (P&O) method to provide fast-tracking response. However, they produce power loss due to small oscillations in the steady state. The proposed method excludes the use of closed-loop controller and steady-state oscillations by directly estimating the coordinates of MPP using three random operating points on the parabolic P-I curve. To substantiate the effectiveness of the parabolic extrapolation-based MPPT algorithm, different conditions of temperature gradient and load have been applied. The results demonstrate that the proposed algorithm takes <15% of the time taken by P&O method to track the MPP.

关键词： thermoelectric conversion maximum power point trackers extrapolation closed loop systems MPPT algorithm parabolic extrapolation maximum power point tracking technique thermoelectric generator systems closed-loop controller perturb and observe method P& O method fast-tracking response power loss steady-state oscillations random operating points parabolic P-I curve temperature gradient

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Loss-based investigation and hybrid compensation of parameter variation effects on control of permanent magnet synchronous motors

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INTERNATIONAL TRANSACTIONS ON ELECTRICAL ENERGY SYSTEMS 2018年第1期28卷 1-1页

作者： Pairo, Hamidreza Khanzade, Mohammad Hossein Shoulaie, Abbas Iran Univ Sci & Technol Dept Elect Engn Tehran Iran Comprehens Imam Hosein Univ Dept Informat & Commun Technol Tehran Iran

In this paper, saturation and temperature variation effects on control of permanent magnet synchronous motors are investigated in terms of motor loss on different control methods including unity power factor, maximum torque per ampere, and loss minimization. Afterwards, a hybrid compensation method is proposed to improve the response time to reach maximum efficiency point. In the proposed method, to improve the response time to reach maximum efficiency point, initial value of optimum operating point is determined via model-based method. Then, based on perturb and observe method, d-axis reference current is changed step by step. Next value of d-axis reference current is determined via measuring direction of dc-link power variation. Also, the proposed hybrid method is compared with a conventional search-based method under different parameter variation and step load and reference speed implementation. The proposed hybrid compensation algorithm has been experimentally implemented and proved to be a practically useful method to improve the response time to reach maximum efficiency point under parameter variation and also under load and speed variation.

关键词： adjustable speed drive energy saving parameter compensation permanent magnet synchronous motors (PMSMs) perturb and observe method search-based method

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A new MPPT control for photovoltaic panels by instantaneous maximum power point tracking

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ELECTRICAL ENGINEERING IN JAPAN 2006年第3期157卷 73-80页

作者： Tokushima, Daiki Uchida, Masato Kanbei, Satoshi Ishikawa, Hiroki Naitoh, Haruo Gifu Univ Gifu Japan

This paper presents a new maximum power point tracking control for photovoltaic (PV) panels. The control call be categorized into the perturb and observe (P&O) method. It utilizes instantaneous voltage ripples at PV panel output terminals caused by the switching of a chopper connected to the panel in order to identify the direction for the maximum power point (MPP). The tracking for the MPP is achieved by a Feedback control of the average terminal voltage of the panel. Appropriate use of the instantaneous and the average values of the PV voltage for the separate purposes enables both the quick transient response and the good convergence with almost no ripples simultaneously. The tracking capability is verified experimentally with a 2.8-W PV panel tinder a controlled experimental setup. A numerical comparison with a conventional P&O confirms that the proposed control extracts much more power from the PV panel. (c) 2006 Wiley Periodicals, Inc.

关键词： photovoltaic MPPT instantaneous maximum power point tracking control perturb and observe method

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