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- 摘要
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- 实验方案
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A hybrid shuffled frog‐leaping and pattern search algorithm for load frequency controller design of a two‐area system composing of PV grid and thermal generator
摘要： The shuffled frog-leaping algorithm (SFLA) is a nature-inspired metaheuristic swarm-based optimization algorithm, which mimics the social behavior of memetics. The SFLA comprises an arrangement of communicating virtual population of frogs divided into various memeplexes. Many attempts have been made to find the variant of the SFLA that performs better on a variety of optimization tasks by making the original SFLA more complex. This paper proposes the hybrid approach by combining the SFLA algorithm with a pattern search algorithm, which improves the original technique named as the hybrid shuffled frog-leaping and pattern search algorithm (hSFLA-PS). The superiority of the proposed hybrid algorithm over the original SFLA in terms of implementation time and solution quality is compared by taking several benchmark test functions. In the next step, the real application of the proposed hybrid approach in the engineering field is done by designing a proportional-integral-derivative (PID) controller for frequency regulation of a two-area power system that is composed of a photovoltaic (PV) grid and a thermal generator. It is observed that the hSFLA-PS–based PID controller is more effective for the load frequency control compared with conventional controllers tuned with genetic algorithm (GA) and firefly algorithm (FA).
关键词： automatic generation control (AGC),multiarea multisource power system,maximum power point tracker (MPPT),hybrid shuffled frog-leaping and pattern search algorithm (hSFLA-PS),PID controller,load frequency control (LFC)
更新于2025-09-11 14:15:04
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[IEEE 2018 International Conference on Circuits and Systems in Digital Enterprise Technology (ICCSDET) - Kottayam, India (2018.12.21-2018.12.22)] 2018 International Conference on Circuits and Systems in Digital Enterprise Technology (ICCSDET) - Performance Analysis of Solar Photovoltaic System with Fuzzy Based Variable Step Size MPPT Algorithm Using Matlab /Simulink
摘要： In the recent decades, Photovoltaic (PV) power generation has become one of the primary power source due to the advantages such as less maintenance and environmental benefits. Moreover, the generation source is ultimately free and abundant. However, the major barriers related to PV power generation are low power conversion efficiency, high cost of PV modules and nonlinearity in output power. Because of low power conversion efficiency, PV systems should work always at its Maximum Power Point (MPP). A power conditioning unit with Maximum Power Point Tracking (MPPT) technique is employed in the PV systems to harvest maximum power. The main function of MPPT is to detect the MPP for the given conditions and operate the system at that point. In this paper Fuzzy Logic Controller (FLC) based variable step size MPPT for a standalone solar PV system is presented. Solar PV system with Fuzzy based MPPT controller in Matlab /Simulink. The performance of proposed variable step size fuzzy MPPT algorithm is studied for different input conditions and analyzed in terms of performance parameters such as tracking speed, steady state oscillations, response under variations in irradiance and temparature, average output power and output power ripple. The results are compared with Variable Step Size Incremental Conductance (VSS InC) MPPT algorithm and conventional InC based PV system.
关键词： Solar Photovoltaic (SPV),Fuzzy Logic Control (FLC),MATLAB/Simulink,Simulation,Variable Step Size Incremental Conductance (VSS InC),Maximum Power Point Tracking (MPPT)
更新于2025-09-11 14:15:04
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Analysis Performance of Grid Tie Photovoltaic Type Polycrystalline Using Solar Irradiance Simulation
摘要： Indonesia is a country consisting of several islands some of which are still not covered by electricity. It is this source of PV that can be used to meet the needs of people who are not yet affordable with PLN electricity. Basically, PV includes the generation of new renewable energy types. This new form of energy comes from sunlight. Using semiconductor materials can convert energy from sunlight to electrical energy. Because in Indonesia this includes tropical climates located on the equator line, making Indonesia has a very high intensity of light. Several factors affect electrical energy, namely the extent of PV to be used, the total irradiance received by PV, the decrease in performance due to weather and cleanliness of the PV used such as snow and oiliness. In this study explained the Analysis of Irradian-based Grid Tie photovoltaic performance with Polycrystalline PV types. Taking irradian data using a Solar Power Meter, irradiance and temperature data at a certain time will use the Incremental Maximum Power Point Tracking (MPPT) method, DC-DC boost converter, inverter, voltage source converter (VSC) using algorithm and equipment controls connected to network. This research is simulated using Matlab with the Simulink program.
关键词： Irradiance,PVArray,MPPT,Temperature,Grid,Solar Photovoltaic
更新于2025-09-11 14:15:04
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[IEEE 2019 Chinese Control And Decision Conference (CCDC) - Nanchang, China (2019.6.3-2019.6.5)] 2019 Chinese Control And Decision Conference (CCDC) - A Photovoltaic MPPT Control Strategy Based on Gradient Optimization and MPP Voltage Law
摘要： In this work, a maximum power point tracking (MPPT) control algorithm is developed to determine power efficiency, and to improve the transient nature of the power curve characteristics of a PV cell. Based on the analysis of existing MPPT methods, for PV systems, the relationship between MPP voltage and the open circuit voltage of PV cell under different conditions is studied; moreover, a novel MPPT control strategy which can be applied to different irradiance conditions based on a sub-domain gradient optimization principle and MPP voltage law is proposed. Simulation results show that the proposed method has advantages of fast dynamic response and a non-oscillatory steady state response under different irradiance conditions and input waveforms. For the experimental setup, an existing control method and the proposed MPPT control algorithm are implemented on solar PV cell; it was observed that the proposed MPPT algorithm has stable steady state dynamic characteristics and a fast response speed.
关键词： MPPT,photovoltaic system,voltage law,gradient optimization
更新于2025-09-11 14:15:04
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Hybrid Photovoltaic-Thermoelectric Generator Powered Synchronous Reluctance Motor for Pumping Applications
摘要： The interest in photovoltaic (PV) pumping systems has increased, particularly in rural areas where there is no grid supply available. However, both the performance and the cost of the whole system are still an obstacle for a wide spread of this technology. In this article, a hybrid photovoltaic (PV)-thermoelectric generator (TEG) is investigated for pumping applications. The electric drivetrain comprises a synchronous reluctance motor and an inverter. A control strategy for the drivetrain is employed to execute two main tasks: 1) driving the motor properly to achieve a maximum torque per Ampère condition and 2) maximizing the output power of the PV system at different weather conditions. This means that the conventional DC-DC converter is not used in the proposed system. Moreover, batteries, which are characterized by short life expectancy and high replacement cost, are also not used. It is found that the motor output power and the pump flow rate are increased by about 9.5% and 12% respectively when the hybrid PV-TEG array is used compared to only using PV array. Accordingly, the performance, cost and complexity of the system are improved. Measurements on an experimental laboratory setup are constructed to validate the theoretical results of this work.
关键词： Photovoltaic pumping system,thermoelectric generator,MPPT,motor drives,synchronous reluctance machines
更新于2025-09-11 14:15:04
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Robust Direct Adaptive Controller Design for Photovoltaic Maximum Power Point Tracking Application
摘要： Tracking the maximum output power of a photovoltaic (PV) cell is an important problem to harvest more energy at di?erent weather and load conditions. This paper presents the design and simulation of a robust direct adaptive controller (RDAC) for maximum power point tracking (MPPT) device based on boost converter topology. A mathematical model is developed, and a suitable RDAC is designed for MPPT device, and simulations are performed using MATLAB/Simulink to verify the controller’s robustness at varying operating conditions. The real-time irradiance and temperature data are used on an hourly basis to test the suggested MPPT adaptive controller for a typical sunny day in summer and winter. The simulation results show that the RDAC performs excellent tracking under varying conditions such as irradiance, temperature, load, boost converter inductance, and capacitance.
关键词： adaptive control,boost converter,MPPT,photovoltaic,simulink,compensator design
更新于2025-09-11 14:15:04
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Maximum Power Point Tracking of Photovoltaic System Based on Reinforcement Learning
摘要： The maximum power point tracking (MPPT) technique is often used in photovoltaic (PV) systems to extract the maximum power in various environmental conditions. The perturbation and observation (P&O) method is one of the most well-known MPPT methods; however, it may face problems of large oscillations around maximum power point (MPP) or low-tracking efficiency. In this paper, two reinforcement learning-based maximum power point tracking (RL MPPT) methods are proposed by the use of the Q-learning algorithm. One constructs the Q-table and the other adopts the Q-network. These two proposed methods do not require the information of an actual PV module in advance and can track the MPP through offline training in two phases, the learning phase and the tracking phase. From the experimental results, both the reinforcement learning-based Q-table maximum power point tracking (RL-QT MPPT) and the reinforcement learning-based Q-network maximum power point tracking (RL-QN MPPT) methods have smaller ripples and faster tracking speeds when compared with the P&O method. In addition, for these two proposed methods, the RL-QT MPPT method performs with smaller oscillation and the RL-QN MPPT method achieves higher average power.
关键词： photovoltaic (PV) system,Q-learning,reinforcement learning,maximum power point tracking (MPPT),Q-network
更新于2025-09-11 14:15:04
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Processor in the loop test for algorithms designed to control power electronics converters used in grid‐connected photovoltaic system
摘要： Enhancement of photovoltaic (PV) system efficiency based on simple testing techniques is one of the most promising solutions. This is due to its low cost and easy implementation. This paper shows a way to develop applications based on a new method of operating the STM32F407‐VG board. Thereafter, the processor in the loop (PIL) test can easily be conducted. This method requires an FT232RL USB‐UART converter board as an external serial communication interface that can replace the frequently used internal STLink communication interface. The main advantage of this external device lies in the setting of its baud rate using the aliasing technique. This technique can provide an efficient solution to transfer data from the embedded board to the computer and vice versa at high baud rate. The PIL testing becomes faster and therefore more flexible. The studied case is a grid‐connected small scale PV system. The produced power from the PV generator (PVG) is injected into the grid. The incremental conductance (INC) algorithm‐based maximum power point tracking (MPPT) technique is developed for extracting the maximum power from the PVG. The dq current control method is presented for the three phase voltage source inverter (3‐ph VSI). Further, a scenario of frequency changes in the grid is chosen in order to verify the phase‐locked loop (PLL) ability to track the grid phase angle. The simulation results under MATLAB/Simulink show the efficiency of both controllers and dynamic behavior of the full PV chain. Next, the proposed PIL test is performed by automatically generating the C code from both control algorithms using the Simulink features. This C code is implemented on the STM32F407‐VG board that acts as an external controller meanwhile the plant is still running on the host computer. The PIL test results show that the controllers simulated under MATLAB/Simulink behave in the same way once executed on the embedded board.
关键词： grid,dq current control,PIL,MPPT
更新于2025-09-11 14:15:04
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[IEEE 2019 IEEE 10th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) - Xi'an, China (2019.6.3-2019.6.6)] 2019 IEEE 10th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) - The application of cascade power electronic transformer in large-scale photovoltaic power generation system
摘要： In this paper, a high frequency isolated photovoltaic dc side connection system based on dual active bridge (DAB) converter with multiple photovoltaic arrays with parallel input and cascade output is proposed. The power transmission capacity of DAB converter is analyzed, its phase-shifting control strategy is designed, and a 300kW/3kV photovoltaic power generation system model is built in MATLAB/Simulink for simulation. The simulation results verify the feasibility of the system structure and the effectiveness of the proposed control strategy.
关键词： maximum power point tracking (MPPT),PV array,photovoltaic power generation,dual active bridge (DAB)
更新于2025-09-11 14:15:04
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[IEEE 2019 4th International Conference on Power Electronics and their Applications (ICPEA) - Elazig, Turkey (2019.9.25-2019.9.27)] 2019 4th International Conference on Power Electronics and their Applications (ICPEA) - High voltage gain quasi Z source DC – DC converter contribution to photovoltaic systems
摘要： in this paper, an off-grid solar photovoltaic system based on quasi z source DC-DC converter is presented. In mainly renewable energies the big problem is the low voltage produced; so, the most challenge in photovoltaic system is how to increase the input voltage. The first solution is by associate panels in series, it is the mostly way to augment power and voltage, but it can generate a power loses (connection, shading effect). The second solution is by using a DC-DC boost converter, it is an efficacy technique; except, to obtain a high voltage gain it is necessary to increase the duty cycle; that will be saturate the inductors. An evolutionary power electronics converter may be the best solution, the quasi Z source DC-DC converter make it possible to obtain a high voltage gain with a lower duty cycle (0<D<0.5). The objective of this study is to supply the load by high voltage using one photovoltaic panel and quasi Z source DC-DC converter; for that, the system is modeled and controlled by a perturb & observe algorithm MPPT which can generate the duty cycle D of the converter. The analysis is carried out through simulation in the Matlab? environment, the results obtained clearly depicts the viability and the efficiency of the system.
关键词： Photovoltaic power,voltage gain,MPPT,duty cycle,quasi z source DC-DC converter
更新于2025-09-11 14:15:04