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Topic Review
Conservation Voltage Reduction in Modern Power Systems
Conservation voltage reduction (CVR) is a potentially effective and efficient technique for inertia synthesis and frequency support in modern grids comprising power electronics (PE)-based components, aiming to improve dynamic stability. In conventional power systems with synchronous generators, CVR utilization strategies aiming to conserve energy are split into two broad categories namely, open-loop and closed-loop techniques. Electromechanical voltage regulating devices, such as on-load tap changers (OLTCs), line drop compensators, and capacitor banks, are used to utilize CVR through open-loop procedures without measuring the voltage as a feedback signal. 
  • 505
  • 22 Mar 2023
Topic Review
Using STEM to Educate Engineers about Sustainability
Sustainable design means to base design on any systems and methods that can fulfill any of the sustainability goals: reducing waste, recycling plastics, upcycle materials, etc., and having less of an impact on the environment. Therefore, a challenge arises: how to design products based on sustainable design. This research presents a case study, about how students in a university’s design department, used sustainability practices in their projects, to adopt sustainability as a major aspect during the design process of a product. The researchers used STEM methodologies to educate and guide the students to adopt recycling and upcycling practices to design and develop an educational mobile robot for Educational Robotics and Mechatronics applications. Students were encouraged to develop their problem-solving approaches when developing their designed robots, for a mechatronics project given to them. In this way, the researchers fostered the active and motivated participation of students; an increased interest was found related to several factors, including challenge, competition, group participation, and more. 
  • 505
  • 20 Nov 2023
Topic Review
Wide-Bandgap Semiconductors Evaluation for High-Performance Domestic Induction Heating
In the induction heating system, the power transferred to the output depends on the equivalent resistance of the load, and the resistance depends on the operating frequency. Due to the switching characteristics of wide-bandgap power semiconductor devices, an induction heating system can be operated at higher operating frequencies.
  • 504
  • 25 May 2023
Topic Review
Small-Signal Stability in Microgrid
The microgrid (MG) system is a controlled and supervised power system consisting of renewable energy (RE)-based distributed generation (DG) units, loads, and energy storage. The MG can be operated autonomously or while connected to the grid. Higher intermittencies and uncertainties can be observed in MGs compared to the conventional power system, which is the possible source of small-signal stability in MG systems. It can be seen as disturbances around the stable operating point, which potentially lead to the small-signal instability problem within MGs. Small-signal instability issues also emerge due to the lack of damping torque in the MG. The integration of power electronic devices and complex control algorithms within MGs introduces novel challenges in terms of small-signal stability and possible resonances. The occurrence of interaction in a low- or no-inertia system might worsen the stability margin, leading to undamped oscillatory instability. The interaction within the MG is characterized by various frequency ranges, from low-frequency subsynchronous oscillation to high-frequency ranges around the harmonic frequencies.
  • 503
  • 23 Apr 2023
Topic Review
AI and Neural Network Algorithms
Al increases the potential of Micro-Electro-Mechanical System biosensors and opens up new opportunities for automation, consumer electronics, industrial manufacturing, defense, medical equipment, etc. Micro-Electro-Mechanical System microcantilever biosensors are currently making their way into the daily lives and playing a significant role in the advancement of social technology. Micro-Electro-Mechanical System biosensors with microcantilever structures have a num- ber of benefits over conventional biosensors, including small size, high sensitivity, mass production, simple arraying, integration, etc. These advantages have made them one of the development avenues for high-sensitivity sensors. The next generation of sensors will exhibit an intelligent development trajectory and aid people in interacting with other objects in a variety of scenario applications as a result of the active development of artificial intelligence (AI) and neural networks. A neural algorithm application in Micro-Electro-Mechanical System microcantilever biosensors is anticipated through the associated application of the principal com-ponent analysis approach. Researchers investigation has more scientific study value, because there are currently no favorable reports on the market regarding the use of AI with Micro-Electro-Mechanical System microcantilever sensors.
  • 502
  • 13 Sep 2022
Topic Review
Fog-Based IoT Platform Performance Modeling and Optimization
A fog-based IoT platform model involving three layers, i.e., IoT devices, fog nodes, and the cloud, was proposed using an open Jackson network with feedback. The system performance was analyzed for individual subsystems, and the overall system was based on different input parameters. Interesting performance metrics were derived from analytical results. A resource optimization problem was developed and solved to determine the optimal service rates at individual fog nodes under some constraint conditions.
  • 502
  • 19 Jun 2023
Topic Review
Implementation of Optimization Algorithms in Microgrids
When solving optimization problems in microgrids (optimal power flow, scheduling, and planning) various metaheuristic methods are applied. Their application yields good results when solving multi-criteria problems peculiar to microgrids with a predominance of intermittent renewable electricity generation as well as variable and uncertain electricity consumption. To evaluate microgrid performance, one should use economic criteria and apply methods based on artificial intelligence. In the absence of convergence, it proves efficient to use combinations of two or more algorithms that form a hybrid optimization algorithm.
  • 502
  • 10 Aug 2023
Topic Review
Vibration Monitoring for Hay Rotary Tedder
Vibration monitoring provides a good-quality source of information about the health condition of machines, and it is often based on the use of accelerometers. Mechanical vibration transducers are used to receive a mechanical signal from a vibrating object and convert it into an electrical signal. This signal is properly processed. A measurement system includes a vibration transducer, for instance, a piezoelectric transducer, and an appropriate amplifier. Mechanical vibration measurement systems measure the vibrations produced by machines as well as the vibrations of buildings or bridges. 
  • 499
  • 21 Jun 2022
Topic Review
The Sustainability Concept Focusing on Energy
The concept of sustainability, with a focus on energy, has emerged as a central tenet in addressing the mounting global challenges of environmental degradation and resource depletion. Indicators of sustainability focusing on energy are crucial tools used to assess and monitor progress toward achieving a more sustainable energy system. These indicators provide valuable insights into the environmental, social, and economic dimensions of energy practices and their long-term impacts. By analyzing and understanding these indicators, policymakers, businesses, and communities can make informed decisions, formulate effective policies, and steer their efforts toward a more sustainable energy future. These indicators serve as navigational guides, steering the world toward energy practices that support both present needs and the well-being of future generations. 
  • 499
  • 06 Oct 2023
Topic Review
IoT Communication in Mining Environments
While a robust and reliable communication network for monitoring the mining environment in a timely manner to take care of people, the planet Earth and profits is key, the mining environment is very challenging in terms of achieving reliable wireless transmission.
  • 499
  • 17 Feb 2024
Topic Review
Applications of Measurement Data Manipulation
To keep pace with global energy efficiency trends and, in particular, emission reduction targets in the maritime sector, both onshore and maritime power distribution systems need to be adapted to the relevant new technologies and concepts. As an important link in the distribution chain, medium-voltage switchgear (MV) is expected to be stable and reliable while operating as efficiently as possible. Failures of MV equipment, while rare because the equipment must be safe to handle and use, have far-reaching consequences. The consequences of such failures, whether to the shore or marine power system, present risks to the entire power plant, so an accurate assessment of equipment condition is required to identify potential failures early. The solution is an emerging concept of digital switchgear, where the implementation of sensor technology and communication protocols enables effective condition monitoring, and the creation of a database that, when combined with machine learning algorithms, enables predictive maintenance and/or fault detection.
  • 498
  • 28 Nov 2022
Topic Review
Functionalities of Solid State Transformers
The ongoing energy transition has changed the architecture of electricity networks in ways that conventional power transformers are not able to cope with the new required functionalities. The solid state transformer (SST), which comprises state-of-the-art power electronics with galvanic isolation to interconnect two separate alternating current (AC) or direct current (DC) power grids, is considered to be the dominant solution. 
  • 498
  • 19 Apr 2023
Topic Review
Electricity Usage Settlement System Based on Cryptocurrency Instrument
The development of digital techniques, including blockchain-based mechanisms, has meant that an increased interest in blockchain-based solutions is to be expected. Blockchain and similar approaches are characterised by decentralisation, so they are concurrent with the trends of the transforming power sector. Decentralised energy generation based on a high proportion of prosumer installations requires the implementation of a new settlement system for grid activities related to electricity use. The first projects of such systems based on a dedicated cryptocurrency have emerged. Based on these, the general concept of such a system with its own cryptocurrency called CCE is presented, including variants implementing net-metering and net-billing.
  • 498
  • 09 Jun 2023
Topic Review
History and Polarizer Metasurfaces
Metasurfaces, a special class of metamaterials, have recently become a rapidly growing field, particularly for thin polarization converters. They can be fabricated using a simple fabrication process due to their smaller planar profile, both in the microwave and optical regimes.
  • 497
  • 25 May 2022
Topic Review
Parity–Time-Symmetric Inductor–Capacitor Sensing Systems
Inductor–capacitor (LC) passive wireless sensors is usually composed of an inductor and a sensitive capacitor, whose resonant frequency is modulated by parameters of interest. An external impedance analyzer interrogates the sensors via near-field coupling to realize the purpose of passive wireless detection. Parity–time (PT) symmetry challenges the long-held theoretical basis that only Hermitian operators correspond to observable phenomena in quantum mechanics. Non-Hermitian Hamiltonians satisfying PT symmetry also have a real-valued energy spectrum. In the field of inductor–capacitor (LC) passive wireless sensors, PT symmetry is mainly used for improving performance in terms of multi-parameter sensing, ultrahigh sensitivity, and longer interrogation distance. 
  • 496
  • 15 Jun 2023
Topic Review
Modern MultiPort Converter Technologies
The integration of renewable energy sources (RES) as distributed generation units to the power grid has been accelerated by the rising demand for energy and the growing concern over the environmental effects of conventional sources. At the same time, modern electric vehicles (EV) are demonstrating a promising ability to decrease the consumption of fossil fuels. The issues related to a combination of various renewable energy sources to fulfil the load requirements can be solved by the application of multi-input–output architecture that is properly designed. In order to increase the driving range of EVs, several energy sources, including ultracapacitors and fuel cells, should be connected and operate in combination with a battery storage system. To manage these energy sources with various voltage-current characteristics, the same concept can be applied.
  • 494
  • 12 Sep 2023
Topic Review
Power Electronics Control Algorithm Verification
Power electronics is an interdisciplinary field related to three basic technical areas: (1) electrical engineering, (2) computer engineering, and (3) control engineering. The importance of power electronics has grown over the years, and now it can be found in every area of life: household appliances, a wide variety of industries, power engineering, energy, telecommunications, medicine, transport, etc. The entry presents the existing verification methods for control algorithms in power electronics systems, including the application of model checking techniques. 
  • 493
  • 04 Aug 2021
Topic Review
Textile-Based Perovskite Optoelectronic Applications
Metal halide perovskites (MHPs) are thought to be among the most promising materials for smart electronic textiles because of their unique optical and electrical characteristics. Wearable perovskite devices have been developed that combine the excellent properties of perovskite with those of textiles, such as flexibility, light weight, and facile processability. 
  • 493
  • 05 Sep 2022
Topic Review
Technologies of Combined Heat and Power Production
The combined hot heat and power (CHHP) terminology adopted nowadays is more representative than the CHP that was designated at the end of 19th century, the first combination of useful effects of the electricity production based on the thermomechanical engine industry. The two useful effects of CHHP, electricity and heat, are differentiated by priority, together with the corresponding first law efficiency expressions.
  • 493
  • 06 Feb 2023
Topic Review
Electricity Energy Storage
The mass deployment of energy storage and distributed energy resources has become a major goal across several states in the United States. However, the viability and reality of such a goal in New York City has been put in question as possible financial burdens and execution risks are still unclear, while policies and regulations are still not fully settled. This entry provides a foundational overview of the Lazard LCOS study with emphasis on forward states which have successfully implemented mass deployment of energy storage technologies. “Adders” are related to the practicality in deploying these systems in a highly regulated and densely populated urban area such as New York City. It also discusses details on the typical financial structure/incentives that support the policies and regulations that allow for achieving these clean energy goals. 
  • 492
  • 08 Apr 2022
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