Template-Type: ReDIF-Article 1.0 Author-Name: Jaynendra Kumar Author-X-Name-First: Jaynendra Author-X-Name-Last: Kumar Author-Name: Anshul Agarwal Author-X-Name-First: Anshul Author-X-Name-Last: Agarwal Author-Name: Nitin Singh Author-X-Name-First: Nitin Author-X-Name-Last: Singh Title: A decentralised power management strategy in a hybrid energy storage supported islanded residential sustainable DC microgrid system Abstract: Renewable energy transitions are essential for climate change mitigation and energy security. Microgrids are significant structures to integrate distributed renewable energy sources. DC microgrid has natural compatibility with the DC power generating sources like solar PV, storages like battery and supercapacitor, and modern DC loads like laptop batteries, cell phone batteries, and DC powered LED lights, etc. Power management has been a great concern for the developers and academic researchers in an islanded microgrid system to maximise the utilisation of the intermittent renewable sources, provide quality and reliable power, and stabilise the DC microgrid system. A DC microgrid can be developed in household or community sizes. In this paper, A DC microgrid system has been proposed for residential purposes. The proposed DC microgrid's components details and power management scheme has been discussed. The hybrid energy storage (battery and supercapacitor) has been considered storage for the proposed DC microgrid. The incremental conductance (INC) algorithm has been implemented for the MPPT of the PV system as it is considered one of the most developed and accurate MPPT algorithm. A MATLAB/Simulink demonstration for the proposed system has been carried out. The simulations have been performed for various cases to analyse and validate the effectiveness of the proposed DC microgrid system. Journal: Int. J. of Energy Technology and Policy Pages: 1-31 Issue: 1 Volume: 18 Year: 2022 Keywords: distributed generation; DG; islanded DC microgrid; residential microgrid; solar PV; hybrid energy storage system; HESS; interfacing DC to DC converters. File-URL: http://www.inderscience.com/link.php?id=121502 File-Format: text/html File-Restriction: Access to full text is restricted to subscribers. Handle: RePEc:ids:ijetpo:v:18:y:2022:i:1:p:1-31 Template-Type: ReDIF-Article 1.0 Author-Name: Karan Singh Joshal Author-X-Name-First: Karan Singh Author-X-Name-Last: Joshal Author-Name: Neeraj Gupta Author-X-Name-First: Neeraj Author-X-Name-Last: Gupta Author-Name: Anuradha Tomar Author-X-Name-First: Anuradha Author-X-Name-Last: Tomar Title: Internet of things-based smart grid: an overview Abstract: The smart grid (SG) is a huge step forward for revolutionising traditional grids. The features of the SG help in solving the complications related with the outdated grids. The SG has the potential to efficiently integrate renewable energy, provide two-way communication, and store electrical power. But still, the SG is considered to be in its nascent stage for getting the maximum benefits from SG. The problem lies within the automation, communication and management of SG. The key for solving this problem is the internet of things (IoT) which itself is a revolution in digital communication after computers and internet. The main focus of this paper is to confer about the IoT and SG systems. It has also shown the power and information flow within the SG systems. Its main aim is to understand the various benefits, features and application areas of IoT-based SG systems. Journal: Int. J. of Energy Technology and Policy Pages: 57-70 Issue: 1 Volume: 18 Year: 2022 Keywords: internet of things; IoT; smart grid; SG; home area network; HAN; neighbourhood area network; NAN; wide area network; WAN; communication technologies. File-URL: http://www.inderscience.com/link.php?id=121504 File-Format: text/html File-Restriction: Access to full text is restricted to subscribers. Handle: RePEc:ids:ijetpo:v:18:y:2022:i:1:p:57-70 Template-Type: ReDIF-Article 1.0 Author-Name: Ramji Tiwari Author-X-Name-First: Ramji Author-X-Name-Last: Tiwari Author-Name: P. Pandiyan Author-X-Name-First: P. Author-X-Name-Last: Pandiyan Author-Name: S. Saravanan Author-X-Name-First: S. Author-X-Name-Last: Saravanan Author-Name: T. Chinnadurai Author-X-Name-First: T. Author-X-Name-Last: Chinnadurai Author-Name: N. Prabaharan Author-X-Name-First: N. Author-X-Name-Last: Prabaharan Author-Name: K. Kumar Author-X-Name-First: K. Author-X-Name-Last: Kumar Title: Quadratic boost converter for wind energy conversion system using back propagation neural network maximum power point tracking Abstract: The article presents a DC-to-DC high step-up quadratic boost converter with maximum power point tracking (MPPT) technique using artificial neural network (ANN) for wind energy transfer systems. In order to get the maximum possible electrical energy from the wind speed, the proposed topology employs a back propagation network (BPN) based neural network control technique. A quadratic boost converter (QBC) is employed in this system to attain the higher voltage rating, and its performance is tested with a boost converter to determine its efficiency. The proposed system is developed in MATLAB/Simulink platform to demonstrate the operating principle under continuous conduction mode. The results obtained from this proposed system are more favourable as compared with classical perturb and observe (P%O). Journal: Int. J. of Energy Technology and Policy Pages: 71-89 Issue: 1 Volume: 18 Year: 2022 Keywords: wind energy conversion system; WECS; quadratic boost converter; QBC; artificial neural network; ANN; maximum power point tracking; MPPT; permanent magnet synchronous generator; PMSG. File-URL: http://www.inderscience.com/link.php?id=121516 File-Format: text/html File-Restriction: Access to full text is restricted to subscribers. Handle: RePEc:ids:ijetpo:v:18:y:2022:i:1:p:71-89 Template-Type: ReDIF-Article 1.0 Author-Name: Noelia Araújo-Vila Author-X-Name-First: Noelia Author-X-Name-Last: Araújo-Vila Author-Name: Lucília Cardoso Author-X-Name-First: Lucília Author-X-Name-Last: Cardoso Author-Name: José Antonio Fraiz-Brea Author-X-Name-First: José Antonio Author-X-Name-Last: Fraiz-Brea Title: Electric vehicles purchase perceptions. Effect on environmental awareness Abstract: Environmental pollution is a major problem in today's society and one of the sectors that contribute highly to pollution is the transport sector. The transport sector contributes significantly to the development of society and the economy. However, it can also negatively affect human health and the natural environment. Currently, vehicles that consume fossil energy remain in majority, and it is necessary to know what the actual purchase expectations are. That is why this work analyses the intention to purchase electric vehicles by private individuals, as well as the factors that positively and negatively influence this decision. For this purpose, primary data was collected via a survey conducted in Spain (n = 463). The main results obtained show that there are still more negative aspects than positive ones when deciding to purchase an electric car. The main barriers to purchase include the high price, the low range, the scarcity of charging stations or the absence of specialised workshops. Journal: Int. J. of Energy Technology and Policy Pages: 32-56 Issue: 1 Volume: 18 Year: 2022 Keywords: electric vehicles; purchase perceptions; environmental awareness; green energies. File-URL: http://www.inderscience.com/link.php?id=121519 File-Format: text/html File-Restriction: Access to full text is restricted to subscribers. Handle: RePEc:ids:ijetpo:v:18:y:2022:i:1:p:32-56 Template-Type: ReDIF-Article 1.0 Author-Name: S.S. Midhun Author-X-Name-First: S.S. Author-X-Name-Last: Midhun Author-Name: T. Samina Author-X-Name-First: T. Author-X-Name-Last: Samina Title: Predictive direct torque control of a rotor-side matrix converter driven grid connected DFIG with torque and flux ripples minimisation criterion Abstract: The doubly fed induction generator (DFIG) is the most commonly used machine for variable speed wind power generation, and the single stage matrix converter (MC) can potentially replace the conventional back-to-back voltage source converters (VSCs) for rotor to grid inter connection. In this research work, the performance of grid connected DFIG with rotor side MC is analysed with predictive direct torque control (P-DTC) technique incorporating a criterion for minimising the torque and rotor flux ripples at a fixed switching frequency. Space vector modulation (SVM) is utilised for MC side control. The system exhibits better transient and steady-state behaviour over conventional configurations, for both sub and super-synchronous operating modes, as evaluated by simulation based on a 2 MW DFIG model in MATLAB-Simulink environment. Journal: Int. J. of Energy Technology and Policy Pages: 91-104 Issue: 2 Volume: 18 Year: 2022 Keywords: doubly fed induction generator; DFIG; matrix converter; MC; predictive direct torque control; P-DTC; space vector modulation; SVM; ripple reduction criterion. File-URL: http://www.inderscience.com/link.php?id=124355 File-Format: text/html File-Restriction: Access to full text is restricted to subscribers. Handle: RePEc:ids:ijetpo:v:18:y:2022:i:2:p:91-104 Template-Type: ReDIF-Article 1.0 Author-Name: Sudhir Kumar Author-X-Name-First: Sudhir Author-X-Name-Last: Kumar Author-Name: Suresh Kant Verma Author-X-Name-First: Suresh Kant Author-X-Name-Last: Verma Title: CFD analysis of fluid flow and heat transfer in solar air heater having sinusoidal roughness Abstract: CFD analysis of fluid flow and heat transfer in solar air heater (SAH) having sinusoidal (sine square function) rib roughness provided underneath the absorber plate facing towards the fluid flow inside the SAH duct has been carried out in the range of parameters, i.e., roughness pitch (P) 10 mm-18 mm, roughness height (e) 0.7 mm-1.2 mm and Reynolds number (Re) 4,000-15,000. In order to find the optimal thermohydraulic performance (THP), a parameter indicating the maximum heat transfer at the cost of minimum pumping power is required. The fine and uniform mesh has been used to resolve the viscous sublayer. Vortex (circulation) formed near the wall creates local turbulence and acts as a heat exchanger between the hot absorber surface and the main flow. The optimal value of THP (ɳ) has been found to be 2.03 which has been compared with other roughness models (triangular and rectangular) and found to be the maximum among the three models. Journal: Int. J. of Energy Technology and Policy Pages: 105-125 Issue: 2 Volume: 18 Year: 2022 Keywords: sinusoidal rib; CFD analysis; artificial roughness; thermohydraulic performance; THP; solar air heater. File-URL: http://www.inderscience.com/link.php?id=124357 File-Format: text/html File-Restriction: Access to full text is restricted to subscribers. Handle: RePEc:ids:ijetpo:v:18:y:2022:i:2:p:105-125 Template-Type: ReDIF-Article 1.0 Author-Name: C. Mbey Author-X-Name-First: C. Author-X-Name-Last: Mbey Author-Name: A.T. Boum Author-X-Name-First: A.T. Author-X-Name-Last: Boum Author-Name: L. Nneme Nneme Author-X-Name-First: L. Nneme Author-X-Name-Last: Nneme Title: Roadmap for the transformation of electrical distribution network of the city of Douala into smart grid Abstract: This article is a proposal for the development of a roadmap for the transformation of the electrical distribution network of the City of Douala into a smart distribution grid. This research is based on similar work in other towns, surveys, interviews with resource people, academics and the master plan of energy development in Cameroon. It can be helpful as guidance for the deployment of smart grids in Cameroon in particular and in African sub-regional towns in general. The results show that the smart grid deployment in the City of Doula will be done firstly in a short-term from 1 to 5 years, secondly for a medium-term from 6 to 15 years and finally for a long-term from 16 to 30 years. The lack of related studies, benchmarking methods and the unpublished results by those who have already worked on those problems, make this article a greater contribution for energy policy and development, mostly for Sub-Saharan African towns. Journal: Int. J. of Energy Technology and Policy Pages: 146-162 Issue: 2 Volume: 18 Year: 2022 Keywords: distribution network; Douala city; roadmap; smart grid; transformation. File-URL: http://www.inderscience.com/link.php?id=124362 File-Format: text/html File-Restriction: Access to full text is restricted to subscribers. Handle: RePEc:ids:ijetpo:v:18:y:2022:i:2:p:146-162 Template-Type: ReDIF-Article 1.0 Author-Name: N.K. Rayaguru Author-X-Name-First: N.K. Author-X-Name-Last: Rayaguru Author-Name: S.P. Raja Author-X-Name-First: S.P. Author-X-Name-Last: Raja Author-Name: K. Karunanithi Author-X-Name-First: K. Author-X-Name-Last: Karunanithi Title: Power quality improvement in PV-grid system using hybrid lion-GH algorithm based custom power device Abstract: Voltage distortions, flicker and unbalances are the major synchronisation problems in grid connected photovoltaic system leading to power quality issues. Also, sudden changes of load, application of nonlinear loads and switching conditions causes power quality issues. To overcome these problems, the proposed grid connected PV system is implemented with a custom power device (unified power quality conditioner). The photovoltaic system is designed and implemented by mathematical model approach, and a maximum power point tracing-based (MPPT) dc-dc converter is used to extract maximum power from the solar system. The reference signal required for series and shunt converter of unified power quality conditioner (UPQC) is controlled with optimisation techniques. An MPPT-based boost converter is implemented with PV system to improve the efficiency in such a way that the duty cycle required for boost converter and parameters of PI controller are tuned effectively with an implementation of novel hybrid MPPT technique, i.e., hybrid connection of LOA-GH algorithm. This proposed system is to be implemented and tested in MATLAB/Simulink and results are to be verified with different controllers. Journal: Int. J. of Energy Technology and Policy Pages: 126-145 Issue: 2 Volume: 18 Year: 2022 Keywords: photovoltaic system; unified power quality conditioner; phase angle controller; lion optimisation algorithm; grasshopper algorithm; hybrid LOA-GO; P%O MPPT controller. File-URL: http://www.inderscience.com/link.php?id=124367 File-Format: text/html File-Restriction: Access to full text is restricted to subscribers. Handle: RePEc:ids:ijetpo:v:18:y:2022:i:2:p:126-145 Template-Type: ReDIF-Article 1.0 Author-Name: Ihtisham Ul Haq Author-X-Name-First: Ihtisham Ul Author-X-Name-Last: Haq Author-Name: Shavkat Otamurodov Nusratillayevich Author-X-Name-First: Shavkat Otamurodov Author-X-Name-Last: Nusratillayevich Author-Name: Ravindra Hewa Kuruppuge Author-X-Name-First: Ravindra Hewa Author-X-Name-Last: Kuruppuge Author-Name: Sisira Kumara Naradda Gamage Author-X-Name-First: Sisira Kumara Naradda Author-X-Name-Last: Gamage Author-Name: Hotniar Siringoringo Author-X-Name-First: Hotniar Author-X-Name-Last: Siringoringo Title: Energy intensity, tourism development, and environmental degradation nexus: further evidence from Small Island State in South Asia Abstract: The tourism industry is considered as a vital factor of economic growth but its impact on the environment also grabs the attention of researchers. The prime objective of the study is to find the effect of energy intensity and tourism on environmental degradation in the Maldives. For this purpose, energy intensity along with tourism is modelled in the environmental Kuznets curve (EKC) hypothesis context. A long run relationship is established among variables through cointegration technique after it is found that all variables are integrated of order one. Results show that energy intensity is contributing to environmental degradation in not just long run but also in short run whereas tourism leads to environmental degradation in long run while it curbs environmental degradation in short run. This study confirms existence of EKC hypothesis in the Maldives. Causality analysis reveals unidirectional causality from income into carbon emissions and tourism. Policies are recommended for sustainable tourism in the Maldives. Journal: Int. J. of Energy Technology and Policy Pages: 163-178 Issue: 2 Volume: 18 Year: 2022 Keywords: energy intensity; tourism development; EKC hypothesis; environmental degradation. File-URL: http://www.inderscience.com/link.php?id=124370 File-Format: text/html File-Restriction: Access to full text is restricted to subscribers. Handle: RePEc:ids:ijetpo:v:18:y:2022:i:2:p:163-178