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.
Grid-connected photovoltaic systems are usually designed to provide active powers. The statutory standards or the grid-code does not allow the injection of reactive power. However, many countries have relaxed or are in process of relaxing the standards. Hence, it is highly desirable that the capacity of the inverters to control reactive power be utilized. The reactive power that a PV can supply is...
In some countries, electrical distribution lines have to cross areas where the installation cost could be very high and carrying out maintenance could become extremely difficult (e.g. desert areas). As a result, frequent power disconnections and blackout heavily affect the quality of supply of end-users. Oppositely, the renewable energy sources exploitation in supplying portions of the distribution...
Solar sources require using power converters introducing harmonics in the output waveforms. Data used is the solar radiation and temperature in Halifax, Nova Scotia, Canada. In this work we studied the effect of changing the blanking angle of the square-wave inverter with 60Hz switching. The harmonics are evaluated for various temperatures and solar radiation for the optimum firing angle. Also probability...
This paper applies a long term network observability analysis for investigating the potential contribution of photovoltaic (PV) inverters to the mitigation of voltage unbalance in low voltage (LV) feeders. For this purpose, a probabilistic offline state estimation algorithm is used, which simulates the time-varying action of local voltage (magnitude and unbalance) control schemes. The paper focuses...
This paper presents the modeling & simulation of 100 KW grid connected Solar Power Plant on MATLAB. The renewable energy sources such as the solar and wind offers clean, green and abundant energy. As the power demand increasing the power failure also increases so that the renewable energy can be used to provide the constant load demand continuously. Due to environmental condition PV array is influenced...
This paper propose a novel single stage buck-boost inverter with various line conditions and working in both buck and boost modes. This novel topology is derived from conventional buck boost converter. The output voltages of photovoltaic (PV) systems are vary in wide ranges due to environmental changes. So the inverter system needs to operate in both buck and boost modes. This topology suitable for...
A novel power decoupling circuit using a flying capacitor topology is proposed in this paper. The inverters, which are connected to a single-phase grid, have single-phase power fluctuation at the twice the grid frequency. Thus, bulky electrolytic capacitor is generally used as DC link capacitor. In the proposed circuit, the power fluctuation is compensated by the flying capacitor in the flying capacitor...
The Photovoltaic System is considered as one of the effective means of electrifying remote and isolated areas in today's world. This paper provides a complete optimal design to generate power using standalone PV system in the remote location of UAE. The pattern of the load is initially analyzed and the solar irradiance of the remote location near abudhabi is taken from the RET simulation software...
This paper suggests a design for a standalone photovoltaic (PV) system for house applications with a storage unit and an isolated full bridge bidirectional dc-dc converter scheme for controlled battery charging and discharging purpose. The maximum amount of power is extracted from the solar array in each and every step by controlling the duty ratio of the power MOSFET of the boost converter connected...
Three phase converters are favorable for high power grid connected systems. In photovoltaic (PV) application, it is possible to remove the transformer from the PV system in order to reduce size, losses, and cost; and improve the efficiency. In other hand, presence of the parasitic capacitor between the panel's metal frame and cells causes the leakage current issue. The leakage current increases current...
This paper investigates the modern topology of multilevel converters, which are suitable for use in high power photovoltaic applications with the focus on achieving lower total harmonic distortion and better efficiency. Multilevel converters offer several advantages compared to conventional types. Multilevel converters provide high quality output while using the low switching frequency. It affects...
Photovoltaic (PV) is very important to produce electric energy where the electricity is unavailable. Operating devices in this area should understand the PV characteristics. A PV powered water pumping system is an alternative way to get water for any purposes, most of them employ AC induction motor with two converters. To optimize the electric power generated by PV so that operating the PV at its...
The unipolar sinusoidal pulse width modulation (SPWM) full-bridge (FB) transformerless photovoltaic (PV) inverter can achieve high efficiency by using super-junction MOSFETs together with silicon carbide (SiC) diodes. However, the MOSFETs are limited to use in transformerless PV inverter due to the low reverse recovery characteristics of the body diode. In this paper, a new transformerless PV inverter...
This research is a concept study for a photovoltaic power plant on an Algerian site, this plant is connected to the electrical distribution network of low or medium voltage. it follows that the study of system simulation in its entirety, would be used for this purpose the computer software PVSYST. our work involves the design of 1 MWc photovoltaic plant in Aïn-melh M'sila where there favorable weather...
This paper presents an application of Direct Torque Control (DTC) drive scheme for a photovoltaic water pumping system. The photovoltaic panel is used to supply the inverter feeding the induction motor used to drive the water pump. The pumping system studied is presented and developed under Matlab/Simulink environment and results of simulation show high performances of the proposed model.
Solar PV is an important part of the Moroccan national energy strategy which helped the recent development of this sector. In the present work, we developed a computerized methodology to optimize the design of on-grid solar PV systems which is adapted to local power billing, feeding restrictions and legislation in Morocco. It is based on a 3-phase process: (1) Determining the customer's power load...
The oil and gas industry has a tremendous challenge in powering its remote and off-grid locations. Conventional power systems require large investments and complex projects to achieve a reliable and efficient power supply at those locations. Realizing this fact, Saudi Aramco has completed many solar panel PV system installations projects. The company is aiming to gain familiarity with different renewable...
Due to environmental conditions it becomes more and more important to apply renewable energies and efficient technologies. For power injection of photovoltaic and fuel cell energy an inverter is needed. First of all the voltage should be stepped up to sufficient level at which the DC/AC conversion can be performed to AC mains voltage requirements. Overall performance of the renewable energy system...
The paper presents a single phase grid integration of a shunt connected Photovoltaic (PV) generator. The objective of the proposed system is to provide uninterrupted power supply to the load during both strong sunlight as well as at night or at cloudy conditions. The interface between the grid and the PV is carried out through a Voltage Source Inverter (VSI), eliminating the current harmonics and...
The immense deployment of renewable energy resources (RES) have gained significant interest in distribution networks, which creates great challenges for distribution network planners and operators. One way of mitigating such challenges is to combine the integration of RES with energy storage systems (ESS). However, appropriate combination of both RES and ESS requires new planning methodologies in...
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.