Apr'22
The IUP Journal of Electrical and Electronics Engineering
Focus
In the paper, "Identification of Frequency Bands Using Terrestrial Propagation Modeling", by Venkateshwarla Rama Raju, Goutham Chakravarthy Rama Raju and Vikram Chakravarthy Rama Raju, the choice of frequency band under WiFi and WiMax technologies for wireless connectivity in rural and remote areas is reviewed. The authors recommend the 2.4 GHz frequency band range mainly used for fixed cellular mobile services, fixed terrestrial point-to-point links, etc.
In the paper, "Design of Low Power Full Adder Using Multilayer Perceptron to Minimize Energy Delay Product of Computational Logic Circuits", by C Pakkiraiah and R V S Satyanarayana, a novel Multi-Layer Perceptron Full Adder (MLPFA) design is presented. The proposed method uses each neuron as a specific case of a Boolean expression, and neural network-based approach to full adders is developed. It is shown that the total power dissipation improved to 18% with the proposed design.
Various challenges faced in the operation of a large Indian power system like ensuring environmental norms in thermal power plants, tackling variable generation by renewable energy sources, and efficient utilization of new technologies like Phasor Measurement Units are reviewed in the paper, "Power System Operation: Issues and Challenges", by M S R Murty and P V Balasubrahmanyam.
Power output of a solar Photovoltaic (PV) system depends on various factors like geometric placement of the sun, the ambient temperature, and the sun's irradiation levels. Maximum Power Point Tracking (MPPT) technique is used to extract maximum power under all conditions. In the paper, "Application of Cuckoo Search Algorithm for MPP Tracking of PV Systems", by Ritu K R and A K Wadhwani, a novel approach using cuckoo search is studied. It is shown that compared to Perturb & Observe (P&O) method, the proposed algorithm offers several advantages like better dynamic response, fast tracking and improved performance under varying environmental conditions.
Consulting Editor
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| Article | Price (₹) | ||
| Classification of Active RC and RLC Filter Architectures of the Sallen-Key Family and Trends in their Development |
100
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| Identification of Frequency Bands Using Terrestrial Propagation Modeling |
100
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| Design of Low Power Full Adder Using Multilayer Perceptron to Minimize Energy Delay Product of Computational Logic Circuits |
100
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| Power System Operation: Issues and Challenges |
100
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| Application of Cuckoo Search Algorithm for MPP Tracking of PV Systems |
100
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Classification of Active RC and RLC Filter Architectures of the Sallen-Key Family and Trends in their Development
The paper proposes an extended classification of Active RC Filters (ARCF) and ARLC Filters (ARLCF) with Sallen-Key architectures, including those created in the last three years. This makes it possible to formulate new design directions for an extended family of active RC- and RLC- Sallen-Key filters (BPF, LPF, HPF and RF) for the tasks of high-speed and ultra-fast analog-to-digital signal conversion.
Identification of Frequency Bands Using Terrestrial Propagation Modeling
With the rapid growth of wireless communication across the world, technologies like WiMax and WiFi play a significant role. Here, the frequency and wave propagation has to be done at the terrestrial level to establish a portable telecommunication process. The term frequency spectrum management illustrates various procedures which are aimed to provide the operation of different radio communications at any time without causing any interference. Allocation of the proper frequency band involves providing a high data rate for the transformation of information and reducing the optimum amount of interference. The choice of frequency band depends on the location. Based on this location we need to choose which frequency band is available (licensed or unlicensed) under the technologies such as WiFi or WiMax and supporting the propagation models and planning tools (for designing the network) in order to pass the signals without interference. In this paper, the author focused on the Frequency Band Management of Electromagnetic Spectrum in the range of 2.4 GHz to 60 GHz, and compared the licensed and un-licensed bands using the WiFi and WiMax technologies.
Design of Low Power Full Adder Using Multilayer Perceptron to Minimize Energy Delay Product of Computational Logic Circuits
In many arithmetic processors and digital signal processing applications, the binary adder is the primary computing block. Many electronic vendors have increased the demand for the least delay and minimum power consumption adders with multioperands to be consolidated in the present portable systems. In recent techniques, there has been a tendency regarding the expansion of programmable modules where processors utilize them to provide flexibility and execution. Mainly, neural network configurations are functionally verified by using software provinces. The utilization of the intended style of software implementation has many merits. The constraints of software perception of neural networks can be controlled using hardware implementation. The foremost interest of this paper is to realize the Exclusive-OR gate by Artificial Neural Network (ANN) using Multilayer Perceptron's (MLP) and activation functions as neuron output data values. The implementation results show that the MLP XOR and FA design attained notable refinement in contrast with the other described designs by achieving substantial savings in the total power dissipation and EDP.
Power System Operation: Issues and Challenges
Power system operation has become more complex with larger use of renewable energy sources, strict requirements of environmental controls, and need to maintain adequate security and stability norms. To meet the environmental norms now, Flue-Gas Desulphurization (FGD) plants have to be installed in old thermal power plants. With larger share of wind and solar energy resources, flexible operation of conventional thermal and hydro power plants is needed. The paper reviews various recent issues pertaining to power system operation in India and the challenges posed to ensure efficient grid operation.
Application of Cuckoo Search Algorithm for MPP Tracking of PV Systems
The paper discusses Maximum Power Point Tracking (MPPT) of PV systems using the Cuckoo Search (CS) algorithm. CS has numerous advantages, including a simple tuning procedure with great efficiency and quick convergence. In the search procedure, Cuckoo employs a random walk based on Levy flight. MPPT is compared to other techniques P & O using CS. Direct duty cycle control is used with a DC-DC converter. The findings demonstrate that CS can track MPP under various operating circumstances with fewer power losses, compared to other techniques.