The Experts below are selected from a list of 84 Experts worldwide ranked by ideXlab platform

Jiann-fuh Chen - One of the best experts on this subject based on the ideXlab platform.

  • A high-efficiency single-phase three-wire photovoltaic energy conversion system
    IEEE Transactions on Industrial Electronics, 2003
    Co-Authors: Yeong Chau Kuo, Tsorng-juu Liang, Jiann-fuh Chen
    Abstract:

    A single-phase three-wire photovoltaic energy conversion system with single-stage structure using a novel maximum power-point tracking (MPPT) algorithm is presented. An equivalent model of the proposed system is derived to analyze the characteristics of the system and to design the controller. Owing to the linear relation of the PV array parameters versus insolation, the model is easy to analyze. The proposed system employs a three-leg inverter to control the MPPT process, the line current, and neutral line current. A current-controlled MPPT algorithm controls the MPPT. A neutral line-mode controller maintains a utility neutral line current of zero. A line-mode controller controls the line current so as to provide power to the utility with a unity power factor. The proposed system acts as a Solar Generator on sunny days and functions as an active power filter on rainy days. Computer simulation and experimental results demonstrate the accuracy and the superior performance of the proposed technique.

  • Novel maximum-power-point-tracking controller for photovoltaic energy conversion system
    IEEE Transactions on Industrial Electronics, 2001
    Co-Authors: Yeong Chau Kuo, Tsorng-juu Liang, Jiann-fuh Chen
    Abstract:

    A novel maximum-power-point-tracking (MPPT) controller for a\nphotovoltaic (PV) energy conversion system is presented. Using the slope\nof power versus voltage of a PV array, the proposed MPPT controller\nallows the conversion system to track the maximum power point very\nrapidly. As opposed to conventional two-stage designs, a single-stage\nconfiguration is implemented, resulting in size and weight reduction and\nincreased efficiency. The proposed system acts as a Solar Generator on\nsunny days, in addition to working as an active power line conditioner\non rainy days. Finally, computer simulations and experimental results\ndemonstrate the superior performance of the proposed technique

Yeong Chau Kuo - One of the best experts on this subject based on the ideXlab platform.

  • A high-efficiency single-phase three-wire photovoltaic energy conversion system
    IEEE Transactions on Industrial Electronics, 2003
    Co-Authors: Yeong Chau Kuo, Tsorng-juu Liang, Jiann-fuh Chen
    Abstract:

    A single-phase three-wire photovoltaic energy conversion system with single-stage structure using a novel maximum power-point tracking (MPPT) algorithm is presented. An equivalent model of the proposed system is derived to analyze the characteristics of the system and to design the controller. Owing to the linear relation of the PV array parameters versus insolation, the model is easy to analyze. The proposed system employs a three-leg inverter to control the MPPT process, the line current, and neutral line current. A current-controlled MPPT algorithm controls the MPPT. A neutral line-mode controller maintains a utility neutral line current of zero. A line-mode controller controls the line current so as to provide power to the utility with a unity power factor. The proposed system acts as a Solar Generator on sunny days and functions as an active power filter on rainy days. Computer simulation and experimental results demonstrate the accuracy and the superior performance of the proposed technique.

  • Novel maximum-power-point-tracking controller for photovoltaic energy conversion system
    IEEE Transactions on Industrial Electronics, 2001
    Co-Authors: Yeong Chau Kuo, Tsorng-juu Liang, Jiann-fuh Chen
    Abstract:

    A novel maximum-power-point-tracking (MPPT) controller for a\nphotovoltaic (PV) energy conversion system is presented. Using the slope\nof power versus voltage of a PV array, the proposed MPPT controller\nallows the conversion system to track the maximum power point very\nrapidly. As opposed to conventional two-stage designs, a single-stage\nconfiguration is implemented, resulting in size and weight reduction and\nincreased efficiency. The proposed system acts as a Solar Generator on\nsunny days, in addition to working as an active power line conditioner\non rainy days. Finally, computer simulations and experimental results\ndemonstrate the superior performance of the proposed technique

Tsorng-juu Liang - One of the best experts on this subject based on the ideXlab platform.

  • A high-efficiency single-phase three-wire photovoltaic energy conversion system
    IEEE Transactions on Industrial Electronics, 2003
    Co-Authors: Yeong Chau Kuo, Tsorng-juu Liang, Jiann-fuh Chen
    Abstract:

    A single-phase three-wire photovoltaic energy conversion system with single-stage structure using a novel maximum power-point tracking (MPPT) algorithm is presented. An equivalent model of the proposed system is derived to analyze the characteristics of the system and to design the controller. Owing to the linear relation of the PV array parameters versus insolation, the model is easy to analyze. The proposed system employs a three-leg inverter to control the MPPT process, the line current, and neutral line current. A current-controlled MPPT algorithm controls the MPPT. A neutral line-mode controller maintains a utility neutral line current of zero. A line-mode controller controls the line current so as to provide power to the utility with a unity power factor. The proposed system acts as a Solar Generator on sunny days and functions as an active power filter on rainy days. Computer simulation and experimental results demonstrate the accuracy and the superior performance of the proposed technique.

  • Novel maximum-power-point-tracking controller for photovoltaic energy conversion system
    IEEE Transactions on Industrial Electronics, 2001
    Co-Authors: Yeong Chau Kuo, Tsorng-juu Liang, Jiann-fuh Chen
    Abstract:

    A novel maximum-power-point-tracking (MPPT) controller for a\nphotovoltaic (PV) energy conversion system is presented. Using the slope\nof power versus voltage of a PV array, the proposed MPPT controller\nallows the conversion system to track the maximum power point very\nrapidly. As opposed to conventional two-stage designs, a single-stage\nconfiguration is implemented, resulting in size and weight reduction and\nincreased efficiency. The proposed system acts as a Solar Generator on\nsunny days, in addition to working as an active power line conditioner\non rainy days. Finally, computer simulations and experimental results\ndemonstrate the superior performance of the proposed technique

Jochen Linssen - One of the best experts on this subject based on the ideXlab platform.

  • Tilt Angle and Orientation Impact on the Techno-economic Performance of Photovoltaic Battery Systems
    Energy Procedia, 2017
    Co-Authors: Amin Lahnaoui, Peter Stenzel, Jochen Linssen
    Abstract:

    The techno-economic analysis investigates the impact of tilt angle and orientation on the production profile of a rooftop Solar Generator and the related performance of a photovoltaic battery storage system for single family houses at a specific location in Germany. The calculations are model-based and take into consideration the consumer load profile, technical and economic photovoltaic battery storage system parameters as well as the framework of regulations. The parameters "share of self-consumption", "degree of autarky", and "economic efficiency in terms of levelized cost of electricity" make up the focus of the modelling results. It is concluded that self-consumption and degree of autarky are strongly and inversely related. In terms of system design, a trade-off has to be made between aiming for high self-consumption and a high degree of autarky. Key findings from the modelling results reveal that a south orientation gives the highest degree of autarky and the lowest levelized cost of electricity, but with the lowest share of self-consumption as well. For rooftops oriented towards east/west, an interesting possibility could be to split the total installed capacity (equally) between the two orientations. This makes it possible to benefit from the high self-consumption of the east orientation and the high degree of autarky of the west orientation. In general it has to be considered that the optimum orientation strongly depends on the consumer load profile. Finally, the results show two opposite impacts that depend on orientation when switching from a tilt angle of 30°to 45°. For a south orientation, the degree of autarky is increased, while for west and east orientations, self-consumption increases.

Rolf Hanitsch - One of the best experts on this subject based on the ideXlab platform.

  • numerical simulation of current voltage characteristics of photovoltaic systems with shaded Solar cells
    Solar Energy, 1996
    Co-Authors: Volker Quaschning, Rolf Hanitsch
    Abstract:

    Abstract In photovoltaics the actual curve of the current-voltage characteristics of a Solar Generator is often needed, for example if the maximum power point is to be determined. It is convenient to use a model for the description of the relationship between current and voltage, which is able to describe the Solar cell in the generation region as well as the breakdowns at positive and negative voltages. As the mathematical expression cannot be given in an explicit form, a set of suitable numerical algorithms to compute the currents for a given voltage and vice versa is given. For more complex Solar Generators, it can neither be assumed that the Solar cells have identical electrical characteristics, nor that they are evenly illuminated. A general model for the description of Solar Generators is proposed that gives all voltages and currents as well as the voltage and current at the outputs of the Solar Generator itself. This new model is also implemented in a numerical algorithm. The characteristics of partially shaded Solar Generators were calculated and discussed using the proposed models.