An Improving Control Method of CTV +P&O on Photovoltaic Power Generation Maximum Power Point Tracking

2013 ◽  
Author(s):  
Qiuxia Yang ◽  
Qi Wang
Keyword(s):  
Power Generation ◽  
Control Method ◽  
Maximum Power Point Tracking ◽  
Maximum Power ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Photovoltaic Power ◽  
Power Point

scholarly journals Research on MPPT Based on Fuzzy Auto-disturbance Rejection

2019 ◽  
Vol 118 ◽  
pp. 02077
Author(s):  
Chuang Ma ◽  
Hong Li ◽  
Zhenyu Gong
Keyword(s):  
Power Generation ◽  
Disturbance Rejection ◽  
Control Method ◽  
Maximum Power Point Tracking ◽  
Maximum Power ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Photovoltaic Power ◽  
Power Point

For the classical maximum power point tracking algorithm, the setting of small step increases the speed of maximum power tracking of photovoltaic power generation system and the stability of operation in stable state. To solve this problem, this paper designs a maximum power point tracking system based on booster circuit, and adopts fuzzy auto-disturbance rejection control to improve the conductance increment method with variable step length. Based on the relationship between the rate of conductance change and the maximum power point conductance, the step size of the adrc is adjusted by using the fuzzy logic control. The MPPT system of photovoltaic power generation is designed by combining the incremental conductance method and the improved fuzzy control method with the correction factor. The control method does not depend on the mathematical model of the system, the design is flexible, the control effect is robust, stable and accurate. It can be used for reference for other types of solar photovoltaic power generation control system.

scholarly journals Arm Power Control of the Modular Multilevel Converter in Photovoltaic Applications

Energies ◽  
2019 ◽  
Vol 12 (9) ◽  
pp. 1620 ◽  
Author(s):  
Anirudh Budnar Acharya ◽  
Mattia Ricco ◽  
Dezso Sera ◽  
Remus Teodorescu ◽  
Lars Einar Norum
Keyword(s):  
Power Generation ◽  
Control Method ◽  
Maximum Power Point Tracking ◽  
Maximum Power ◽  
Modular Multilevel Converter ◽  
Multilevel Converter ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Power Point

In this paper, a control method is proposed that allows the extraction of maximum power from each individual photovoltaic string connected to the Modular Multilevel Converter (MMC) and inject balanced power to the AC grid. The MMC solution used does not need additional DC–DC converters for the maximum power point tracking. In the MMC, the photovoltaic strings are connected directly to the sub-modules. It is shown that the proposed inverter solution can provide balanced three-phase output power despite an unbalanced power generation. The maximum power of the photovoltaic string is effectively harnessed due to the increased granularity of the maximum power point tracking. An algorithm that tracks the sub-module capacitor voltages to their respective voltage references is proposed. A detailed modeling and control method for balanced operation of the proposed topology is discussed. The operation of the MMC under unbalanced power generation is discussed. Simulation results are provided that show the effectiveness of the proposed control under unequal irradiance.

Improved Golden Section Application in Maximum Power Point Tracking of Photovoltaic Power Generation

2014 ◽  
Vol 953-954 ◽  
pp. 52-56
Author(s):  
Wei Du ◽  
Wei Han ◽  
You Fei Tan
Keyword(s):  
Power Generation ◽  
Golden Section ◽  
Maximum Power Point Tracking ◽  
Maximum Power ◽  
Maximum Power Point ◽  
Advantages And Disadvantages ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Photovoltaic Power ◽  
Power Point

In order to increase the output power of the photovoltaic system, the maximum power point tracking is needed. As the starting point of research in the output nonlinear characteristics, analysis of the advantages and disadvantages of the conventional algorithm and have the poor dynamic and steady-state performance of the maximum power point tracking(MPPT), the improvement method of golden section(IGSS) is applied to the photovoltaic power generation system. The results indicate that the method can quickly track the maximum power point of photovoltaic cells.

scholarly journals Discussion and Research of Photovoltaic MPPT Methods

2013 ◽  
Vol 7 (1) ◽  
pp. 123-130
Author(s):  
Guangya Liu ◽  
Mingxiu Cheng
Keyword(s):  
Power Generation ◽  
Maximum Power Point Tracking ◽  
Maximum Power ◽  
Generation Process ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Photovoltaic Power ◽  
Tracking Model ◽  
Power Point

Photovoltaic power generation is one of the ways using solar energy resources effectively. In recent years, it has received the world's attention and has been under rapid development. At present, one of the main problems faced by the photovoltaic power generation is the low conversion efficiency. One way to solve this problem is carrying out the maximum power point tracking in the photovoltaic power generation process. The paper focuses on the implementation of the Conductance Increment Method, and carries on the simulation results. Created the photovoltaic cells simulation model and the photovoltaic maximum power point tracking model in MATLAB, the simulation and analysis are carried out.

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