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Compared to multistage, single-stage grid-connected photovoltaic system (GCPVS) has advantages such as topological simplicity, smaller size, high efficiency, etc. However, complexity in monitoring and controlling scheme is much increased as functions such as maximum power-point tracking (MPPT), synchronization and load sharing with the grid, etc. need to be considered simultaneously in same stage...
The Indian Institute of Technology, Jodhpur (IITJ) has been monitoring and recording all the parameter of 101 kW (43.30 kW A-Si PV system located in Block 1 and 58.08 kW C-Si PV system in Block 2) grid tied solar photovoltaic system over the 4 year. The paper present the operational data 43.30 kW amorphous silicon (A-Si) based PV system located at Block 1 and 58.08 kW crystalline silicon based PV...
In this paper, a study has been carried out to evaluate the performance of the 1.8 kWp rooftop photovoltaic system. This paper presents the result obtained from monitoring of 1.8 kWp crystalline photovoltaic system mounted on inclined iron structure on a flat roof of Ghaziabad, India. The system was monitored for one year and all the electricity generated was fed to the domestic load at 220 V, 50...
Solar cell technology has been developed rapidly in recent years, and in parallel of the photovoltaic (PV) systems becoming widespread in power generation systems, in all around the world, there have been some requirements about the integration of PV distributed generation (DG) systems into the traditional generation systems. One of these requirements will be monitored PV based DG systems and also...
Small-scale photovoltaic (PV) systems commonly use single-phase grid-connected (GC) inverters to feed the generated power into the power grid. In this case the instantaneous GC inverter output power shows a 100 Hz fluctuation. However it is required to keep the instantaneous PV array output power as constant as possible to maximise the average PV array output power. Thus all GC inverters use an energy...
This paper describes a grid-tie photovoltaic (PV) inverter composed of an isolated full-bridge buck DC-DC converter with high-frequency transformer and a cascaded DC-AC full-bridge inverter connected to the grid. Emphasis is given on the modeling and digital control design of the DC-DC converter with the polynomial pole placement method. Simulation results are presented and a inverter prototype is...
In grid-connected photovoltaic (PV) power stations, improving the life expectancy and long-term reliability of three-phase PV inverters is urgently needed to match the significantly higher lifetime of the PV modules. A key contribution towards such improvement is replacing the conventional electrolytic film capacitors inside the inverter with metallized polypropylene film ones. With more and more...
This paper presents the evaluation performance of 15kWp hybrid power system based on AC Coupled PV Diesel Hybrid power system in Malaysia. The system consists of 15 kWp of Photovoltaic (PV) array, 11.4 kW of inverter, 36000 AH of total battery capacity, 10kW bi-directional (BD) inverter and 12 kVA of diesel generator (DG). The system provides electricity to one of remote schools in Sabah, East Malaysia...
Flexible, large-area, and distributed sensor and/or actuator array closely contacted with the human skin are human-friendly and sophisticated tools for biomedical and healthcare applications. In this paper, new applications and design solutions in organic electronics are shown. In an insole pedometer with piezoelectric energy harvesters, an all-pMOS negative voltage generator for a pseudo-CMOS inverter...
This paper presents prediction of Grid Connected Photovoltaic (GCPV) power systems performance parameters towards Malaysia climate variations (solar irradiance and module temperature) by using Mathematical approach. The actual and prediction data measurement were analyzed on three types of solar cell technologies; monocrystalline, polycrystalline and thin film. Each PV array works with different types...
We demonstrate a large area, a simple wire bar-coated polymer FETs array and ICs. Both a highly crystalline conjugated polymer and very smooth insulating polymer layers were formed by the consecutive wire bar-coating process over 4 inch sized substrate within a short processing time for applications of the active and dielectric layer of OFET array and ICs. The bar-coated top-gate/bottom-contact (TG/BC)...
The human activities contribute to the global warming of the planet. As a result, every country strives to reduce carbon emissions. The world is facing not only the depletion of fossil fuels, but also it's rising prices which cause the worldwide economic instability. By the nomenclature it is derived that the new demand for power has been compensated by the implementation of soalr electric and photovoltaic...
The randomness of photovoltaic power generation and reactive load will impact on the operation of distribution network. To improve this situation, reactive power compensation technology of DSTATCOM is applied to the power control of PV grid-connected inverter in this paper. In this way, the PV grid-connected inverter can transports both active power and reactive power to the distribution network....
A control method for two-stage utility grid-connected photovoltaic power conditioning systems (PCS) is proposed. This approach enables maximum power point tracking (MPPT) control with post-stage inverter current information instead of calculating solar array power although no information is needed on PV array, which significantly simplifies the controller and the sensing part. In addition fuzzy logic...
In this work, a proof of concept prototype for a photovoltaic array emulator based on a DC-DC Boost converter is presented. This design arises from the need to study in the laboratory new PV inverters based on Silicon Carbide (SiC) devices in order to evaluate their performances. The lack of space for installation of real photovoltaic panels and the high costs of the commercial emulators lead to alternative...
This paper proposes a new programmable delay cell (PDC) controlled by a 4-bit binary coding inverter array and a 4-bit binary coding capacitor array for the digital impulse radio (IR) ultra wide band (UWB) pulse generator. This proposed PDC can realize an extended tuning range of pulse width with an adjustable step and reduce the cost of chip area. Simulation results show that, when implemented in...
The 3D integration of Cellular Nonlinear Network architectures offers possibilities to increase the pixel and processor count remarkably by allowing integration of different processor functionalities to different chip layers. On the other hand, to avoid extensive use of Through Silicon Vias for inter and intracellular communication, it is important to be able to fit to each layer of silicon as complete...
The dynamical reconfiguration of the photovoltaic array is a feasible method for maximizing the electrical power it produces in presence of partial shading. Although in literature some algorithms aimed at determining the best configuration to be settled for a given shadowing pattern have been presented, no indications about the electrical conditions that can trigger the reconfiguration procedure have...
Our previously proposed ultra low-power subthreshold adiabatic logic has been a problem that noise margin is reduced, so that it is impossible to implement a cascade connection. In this paper, we propose a novel sub-threshold adiabatic logic. To evaluate our proposed circuit, a half adder, full adder, dynamic flip flop and 4×4 array multiplier are designed, and then the operation function and power...
SRAM Physical Unclonable Function (PUF) makes use of efficient silicon fabrication process where duplication of exact replica devices is difficult. One of the major issues with SRAM-PUF is the reliability and uniformity of the start-up pattern with environmental fluctuations. This paper presents a technique for improving uniformity (distribution of 1′s & 0′s) and reliability (variations in power-up...
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