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Dye-Sensitized solar cell (DSSC) has long been regarded as one auspicious choice for the alternative way to convert the solar energy to electric energy. In this work, DSSC has been fabricated using the natural dye extracted from Syzygium cumini fruits. Here, nanocrystalline TiO2 deposited on the fluorine doped tin-oxide (FTO) glass substrate has been used as dye absorber due to their high surface...
Biometrics refers to the process of identifying an individual from others by biological means. Most of the biometric systems are unreliable, can be imitated or even can be stolen. As a result, we need to search for a new biometrics and Electroencephalogram (EEG) based biometrics is a promising field in this aspect. By using the small intra-individual and large inter-individual difference in features...
This paper proposes a double sourced converter which performs both rectifier (ac to dc) and chopper (dc to dc) actions in a single circuit instead of two separate converters. Switching signals for two different modes are simulated by designing a controller to get the desired output from the proposed converter. In both modes of operation the output is dc. All necessary simulations are performed in...
In this paper a theoretical porous silicon surface based plasmon resonance (SPR) sensor has been presented consisting graphene-Melybdenum sulphide (MoS2) hybrid structure for enhancing sensor detection sensitivity. The biosensor uses perfectly matched layer (PML) boundary condition incorporating on its computational domain to improve its surface plasmon resonance characteristics. Here, graphene-MoS...
The uses of transcranial magnetic stimulation (TMS) for the treatment of psychological disorders and other therapeutically purposes are increasing worldwide. The TMS process becomes popular because of its noninvasive operation method. The stimulation coil play one of the vital role for efficient treatment. In this paper three coils including halo, double cone, and halo and double cone assembly coil...
In this paper, the crosstalk performance of a 4 × 4 fiber bragg grating and optical circulator based bidirectional optical cross connects using ten-port rotatable optical circulator (ROC) in wavelength division multiplexing bidirectional ring networks has been presented. The number of coherent and incoherent crosstalk components has been identified. The performance is evaluated in terms of total crosstalk...
The photovoltaic cells are the best way to use solar energy by absorbing the photons radiation. The aim of this paper work is to simulate perovskite solar cell and finding the optimum thickness of the absorber layer. Here we run a simulation of perovskite solar cells on SCAPS-1D simulator software. The cell structure employs similarity with other inorganic solar cells such like CIGS, CdTe and Cu(In,Ga)Se...
The performance of induction generator (IG) based wind farms is not satisfactory these days. The existing IG based farms create a huge problem especially in case of expanding the capacity of the wind farm. This paper introduces a new solution for the problem. It suggests that the introduction of permanent magnet synchronous generator (PMSG) with IG, not only expands the capacity of the wind farm,...
This paper presents the design of a partial feedback linearization controller for speed control of DC machines. The design of the controller is presented based on the nonlinear modeling of the plant. The model of the plant is obtained from differential dynamic equations. A stability analysis is presented to guarantee the stability of the proposed design. To validate the effectiveness of the controller,...
Unfortunately electricity cannot be stored and hence it is the most perishable commodity in the world, it must therefore be used at the same second it is produced. But somehow if we can control the load of consumer section then it will be possible to use generated power of a country rationally for both using traditional and renewable resources. By using Dual Mode Energy Meter in consumer section which...
Nowadays, online social networks become an important part in people's everyday life. Most of the people share their feelings, views, likings and disliking using social networks. By analysing social networks' data properly, it is possible to identify the behavioural patterns of the users. Considering this fact, in this paper we present a framework to analyse social networks' data to identify human...
Antenna array is one of the most useable technologies in present day communication system. There are many applications like biomedical imaging, military communication and radar system where low side lobe level is an essential feature of array processor. There is a trade-off between side lobe level (SLL) and the directivity of the array. Designing an antenna array system with optimum trade-off between...
We consider a single-input multiple-output (SIMO) multiple-access channel (MAC) multi-cellular communication scenario in which two base stations having a group of users each, are situated in two adjacent cells. In order to provide cooperative diversity at the base stations (BSs), multiple relays are used. Each group of users transmits information to its corresponding BS directly as well as via relays,...
Energy is essential to life and the major source of energy comes from fossil fuels. As the human population increases, our rate of consumption of these fossil fuels also increases. On the other hand, world population continues to grow and the limited amount of fossil fuels begin to diminish, it may not be possible to provide the amount of energy demanded by the world by only using fossil fuels to...
This paper presents a smart charge controller (SCC) that can extract maximum power from solar panel and could make instant decision to protect the system. In the same time the designed controller can control high voltage disconnect (HVD)-reconnect, and low voltage disconnect (LVD)-reconnect. An improved maximum power point tracking (MPPT) is achieved through a Peripheral interface controller (PIC)...
Thin-film solar cells (TFSCs) have the potential to reach cost effective photovoltaic generated electricity. Cadmium Sulfide (CdS) and Indium Sulfide (In2S3) buffer layer based Copper Indium Gallium Selenide (CIGS) solar cell offers higher efficiency with low manufacturing cost. Therefore, this paper presents a comparative study between CdS and In2S3 buffer layer based CIGS solar cell. The numerical...
In this paper, the problem of security in multiple input multiple output (MIMO) system has been analysed in the presence of an eavesdropper in cognitive radio networks. Multiple primary and secondary users communicate with the primary and secondary receiver, respectively. The secrecy capacity at primary receiver (PR) and secondary receiver (SR) have been calculated. At first, we use zero-forcing (ZF)...
An adaptive algorithm for selection of Intrinsic Mode Functions (IMF) of Empirical Mode Decomposition (EMD) is a time demand in the field of signal processing. This paper presents a new model of an effective algorithm for the adaptive selection of IMFs for the EMD. Our proposed model suggests the decomposition of an input signal using EMD, and the resultant IMFs are classified into two categories...
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