The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The Maximum power point tracking algorithms is essential to improve the efficiency of PV system. In order to improve the efficiency of PV system, a new algorithm is proposed based on conventional perturbation and observation method. The algorithm proposed a variable perturb step that can be changed automatically and PV system can adjust the step length according to the changed power. So the response...
This paper proposes a novel maximum power point tracking (MPPT) control algorithm considering radiation to improve efficiency of PV system. The proposed algorithm is composed perturb and observe (PO) method and constant voltage (CV) method. PO method is simple to realize and CV method is possible to tracking MPP with low radiation. Response characteristics of proposed algorithm are compared to conventional...
Photovoltaic power supplied to the utility grid is gaining more and more visibility while the world's power demand is increases. Growing demand, advancements in semiconductor technology and magnetic materials such as high frequency inductor cores, has a significant impact on PV inverter topologies and their efficiencies, on the improvement of the control circuits on the potential of costs reduction...
In this paper, we developed a photovoltaic array reconfiguration algorithm to maximize the power that an array can provide a load. The algorithm reconfigures the array such that each element of the array is operated at its maximum power point. A switch topology was also designed to implement the algorithm using the minimum number of switches. Two parameters are used by the algorithm: array loaded...
This paper proposes a sizing procedure based on the observed extremes of solar radiation. This is different from the conventional way of PV system sizing, which is based on the average characteristics of the synthesized solar radiation. Since sizing for a photovoltaic (PV) system is an important area in the application of solar energy, the theoretical aspects of sizing formulas and loss of power probability...
Performance monitoring of solar photovoltaic (PV) power systems is very essential for initial system evaluation, and continuous output optimization. Currently, PV system monitoring is complicated and expensive and limited to large scale grid connected solar PV plants. This paper surveys PV system monitoring methods and proposes a simple and economic method that can be used by stand alone PV power...
The paper presents realization and control of a two-phase bi-directional interleaved converter for a photovoltaic (PV) system. Harmonic contents due to switching action in a dc-dc converter are reduced by the interleaving technique. A nonlinear function is used for predicting the maximum power point (MPP). A novel multi-loop control scheme is developed to achieve maximum PV power generation under...
This paper describes the design and implementation of a novel maximum power point tracking (MPPT) controller to enhance the power output of photovoltaic (PV) system. The novel dynamic controller makes the PV array track the sun automatically by driving two DC motors in two axes. The PV array is nearly perpendicular to the sun during the daytime so as to obtain the maximum generation. Another important...
A chronic drinking water shortage is one of the most important issues in the developing countries, and drinking water from dirty water sources causes serious damage to inhabitants health in some remote areas. The solar distillation remains the most favorable process for the supplying of water to small communities. Base on the traditional solar still, an improved hybrid photovoltaic/thermal (PVT) desalination...
Photovoltaic cell is a kind of DC current power with non-linear characteristic, and its output power varies with module temperature, solar isolation and loads. With the disadvantage of high cost, low transfer efficiency, it's necessary to track the MPP of the PV array all the time in order to improve the system efficiency. According to the mechanism and control adaptive MPPT method based on fuzzy...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.