International Journal of Applied Power Engineering (IJAPE)

Journal Information
ISSN / EISSN : 2252-8792 / 2252-8792
Total articles ≅ 218
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Preeti Nitin Kabra, Sudha Rani Donepudi
International Journal of Applied Power Engineering (IJAPE), Volume 11; https://doi.org/10.11591/ijape.v11.i1.pp52-61

Abstract:
The traditional static synchronous compensator (STATCOM) present in the power grid to compensate instability problem will not be not able to maintain stability of the system due to fluctuations in point of common coupling (PCC) voltage and frequency variation that may result in poor synchronization of the grid. The solution for this is the improvement in conventional STATCOM to virtual synchronous machine–static synchronous compensator (VSM-STATCOM). In this paper an interconnected IEEE-14 bus system is considered for analysis with VSM-STATCOM for improvement in voltage profile on weakest bus of the system. In order to find the weakest bus, load flow analysis is carried out on the bus system using Newton Rapson method. A VSM-STATCOM is connected at that weakest bus in synchronization to the grid injecting reactive power. For the analysis a fault is introduced on any of the line and voltage profile of the weakest bus is observed with and without VSM-STATCOM. The VSM-STATCOM is also compared to a conventional control STATCOM which has no inertia module. A comparative analysis is carrier out with parameters of voltage magnitude and frequency of the weak bus taken into consideration. The magnitude and frequency parameters of conventional STATCOM and VSM-STATCOM are measured using phasor measurement units. The model is designed using MATLAB Simulink power systems library block sets with graphical user interface (GUI) environment.
Bommalapati Malleswari, Mohan Kumar Sesharangaiah, Bhaskara Rao Sanka
International Journal of Applied Power Engineering (IJAPE), Volume 11; https://doi.org/10.11591/ijape.v11.i1.pp1-6

Abstract:
Fast band power measurement technique used for measuring band power in wireless fidelity (Wi-Fi) devices. The difficulty during testing the band power is burst mode transmission takes longer time to measure. A test jig or specialized tool required is costly, which allows continuous mode of transmission for power measurement. The delivered average power by a Wi-Fi device depends upon the data rate which can also vary during time. The procedure proposed hereby developed using a spectrum analyzer to measure band power in the burst mode, in order to ensure repeatable results and optimized to enable fast measurements at low cost, less time and above 90% accurate.
Mohammad Khadem,
International Journal of Applied Power Engineering (IJAPE), Volume 11; https://doi.org/10.11591/ijape.v11.i1.pp7-13

Abstract:
Planning of the demand response has received special attention due to the cost of transmission lines development and shortage of energy resources beside the growth of demand. This research work is focused on the role of microgrid (MG) as an alternative solution for transmission system development and proposed a method for modeling of MGs in the capacity market. The results show that using of MGs leads to reduce the development costs of transmission system. Moreover, MGs cause a slight increase in the profitability of selling capacity to the consumers. These outcomes prove that continuing to grow the number and capacity of MGs in each area ultimately eliminate the inquiry of transmission network development and minimize the cost of capacity market.
Siddesh Kondapur Basavarajan,
International Journal of Applied Power Engineering (IJAPE), Volume 11; https://doi.org/10.11591/ijape.v11.i1.pp25-32

Abstract:
The reaching law approach is broadly used for chattering repression, minimization of steady state error and reaching pace kept minimsed. The reasons of chattering, in this paper proposes sliding mode reaching law. In one hand, they assurance the scheme arrives at the sliding face swiftly and stay on it, in another way they deteriorate the chattering inefficiently, even matchless certainties and disturbances. This proposed reaching law gives uniqueness of the response. The reaching law is compared with Gao’s reaching law. Sliding mode reaching laws gives the efficacy in reducing the chattering of the variable structure control (VSC). This reaching law also reduces the losses in the switching diplomacy. In turns efficiency of the step-down converter increases. Simulation results give significant decrease of chattering and extremely fewer receptive in supply and load variation.
, Rabia Arshad
International Journal of Applied Power Engineering (IJAPE), Volume 11; https://doi.org/10.11591/ijape.v11.i1.pp33-51

Abstract:
High standards of living are linked with the availability of energy. Therefore, there is always a requirement to modify existing power generating systems or to add new systems to fulfill the increasing demands of energy. It is becoming a core issue in the South Asian region so that at least current standards of living could be maintained by controlling growing energy rates and shortening the availability of conventional sources. Furnace oil is a residue obtained in the process of distillation of crude oil in the petroleum industry. This furnace oil is applicable for power generation plants allied with the petroleum industry so that residue of oil refineries could be utilized. In this research, a furnace oil-based power plant is designed in electrical transient and analysis program (ETAP) software. Moreover, steady-state and transient analysis of the proposed design of the power plant are conducted to increase practical viability of model. Load flow is analyzed to depict the performance of the power plant model under load conditions. This model is further tested under the motor starting event to analyze the current drawn by the motor. This event helps to determine the permissible values of protective equipment installed in power plants. In the last, economic dispatch analysis is conducted to find the relative minima of generation cost of furnace oil-based power plant with respect to coal and hydel generation
, Dimitrios Triantafyllidis, , Nikolaos Ntaras, Olga Koutsogianni, George Tsoukos, , Konstantinos Kitsikoudis, , Maria Zarkadoula, et al.
International Journal of Applied Power Engineering (IJAPE), Volume 11; https://doi.org/10.11591/ijape.v11.i1.pp62-90

Abstract:
Many seaports worldwide attempt to gain energy efficiency towards reducing their energy costs while mitigating climate change and environmental effects. In this pa- per, a low-cost business-oriented seaport energy effective management (PERFFECT) platform is introduced. PERFFECT intends to gain knowledge on fundamental port operational and business processes and evaluate them against energy efficiency and environmental footprint. Exploiting all the proposed PERFFECT applications like monitoring, evaluation, forecasting, and optimization, the energy efficiency of the op- erational infrastructure of the port’s is achieved. Port’s energy balance is estimated and used to decide the ports optimal energy usage. Moreover, the traffic volume produced by the gate check is simulated and utilized for further actions. These actions include energy savings and emission reduction recommendations. Finally, the proposed platform is evaluated against real-life data, while the experimental results present the out- come and efficiency of the system. The suggested system results in up to 82.82% light energy savings after a specific suggested action and up to 33% reduction of vehicle emissions, respectively.
Sapavath Sreenu, Jalla Upendar, Bogimi Sirisha
International Journal of Applied Power Engineering (IJAPE), Volume 11; https://doi.org/10.11591/ijape.v11.i1.pp14-24

Abstract:
This paper proposes the switched impedance source converter (SZSC) or switched quasi impedance source DC-DC converter (S-qZSC) based photovoltaic (PV) grid-connected systems. To increase the voltage from low level to high level, all PV grid-connected systems need step-up DC-DC converters. This step-up factor can be increased by connecting the terminals of a traditional quasi impedance source DC-DC converter with an additional diode and a switch. In this proposed converter, the capacitor not only serves as a filter. It is, however, bound in series to the charging loops of the inductors. On the one hand, saturated inductors can trigger instability, which can be avoided. When used for dc-ac conversion, however, the modulation index of the backend H-bridge can be set to a wider range. As compared to existing Z-source-based systems, a shorter duty period results in a higher boost factor.
, Mohammed Beldjehem, Arezki Faiza
International Journal of Applied Power Engineering (IJAPE), Volume 11; https://doi.org/10.11591/ijape.v11.i1.pp91-97

Abstract:
Each time there is a need for a satellite mission analysis, engineers need to coordinate together the choice of one technology with regard to the other (i.e. solar cells technology, transistors, microcontrollers, and batteries). The process of selecting one technology to another or a component to another is called ‘trade off’. This concept is a hard and situational decision that involves diminishing one quality, of a system or a design in return for gains in other aspects such as weight, performance, speed and so on. The present paper will focus essentially on the use of the 28 V unregulated bus voltage because early satellites, all used, a 14 V unregulated bus voltage. The paper will also show trade-offs made when using the 28 V unregulated bus voltage with different topologies.
Jalla Upendar, Sangem Ravi Kumar, Sapavath Sreenu, Bogimi Sirisha
International Journal of Applied Power Engineering (IJAPE), Volume 11; https://doi.org/10.11591/ijape.v11.i1.pp98-108

Abstract:
Elecetric vehicle batteries require direct current (DC) current for charging; hence the circuit alternating current (AC) is converted to DC by a battery charger. Battery charger mostly consists of a rectifier and DC-DC converter with a controller built in to serve as a protective circuit. A harmonic source load is a type of electric car charger. During the AC-DC change over method, harmonic current is introduced into the power system, affecting power quality. In this study, a charging station consisting of buck boost and a charging station consisting a KY Boost converter were simulated. To maintain output voltage of DC-DC converters constant controller is used, the controller is either PI or fuzzy logic controller. So, four models are developed and simulated which are buck-boost converter controlled by proportional-integral (PI)-controller, KY-boost converter controlled by proportional integral-controller, buck boost converter controller fuzzy logic controller and KY boost-converter controlled by fuzzy logic controller. The total harmonic distortion (THD) of the four models is compared.
Sirisha Bogimi
International Journal of Applied Power Engineering (IJAPE), Volume 10; https://doi.org/10.11591/ijape.v10.i4.pp362-372

Abstract:
Nested neutral point clamped multi level inverter with inter connection to grid through the synchronous reference frame (SRF) controller for synchronization of voltage to the grid is demonstrated. The system's main feature is that voltage stress in each inverter switching device is kept to a minimum, and redundant inverter switching states are utilised for neutral point and flying capacitor voltage balancing with sinusoidal pulse-width modulation (PWM) technique, synchronisation to grid voltages, and power injection with low harmonic generation. The inverter receives its input from a photovoltaic (PV) source that is coupled to DC-DC booster converters that are regulated by the maximum power point tracking (MPPT) incremental conductance algorithm to maintain a constant dc voltage. The system is examined under various load conditions with MATLAB Simulink model.
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