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Journal articles on the topic 'Dampen power'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Manuaba, Ida Bagus Gede, Putu Arya Mertasana, Made Mataram, and Cok Gede Indra Partha. "Improving Performance Stability of Power System Java-Bali Interconnection with PIDPSS3B and PIDSVC Controllers." Journal of Electrical, Electronics and Informatics 1, no. 1 (2017): 17. http://dx.doi.org/10.24843/jeei.2017.v01.i01.p04.

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Modern electric power system that many its dynamic equipment continuously vulnerable to internal and external disturbances. On the condition of the disorder, it often happen oscillation in each part or between parts of the electrical system is interconnected. These oscillations become a major problem for the stability of the power system. Modern electrical control systems require a sustainable balance between power generation and demand varying loads. Power System Stabilizer and Static Var Compensator is a control device that is used to dampen low frequency oscillations and to provide addition

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SWAMY, PURAMSETTI, and Dr BODDEPALLI RAJANI. "PV- STATCOM FOR POWER OSCILLATION DAMPING USING FUZZY LOGIC CONTROLLER." INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 08, no. 07 (2024): 1–13. http://dx.doi.org/10.55041/ijsrem36318.

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Abstract- Flexible AC Transmission System (FACTS) devices like Static-Synchronous Compensators (STATCOM) have been used to improve the quality and control of power systems. This paper presents a Photovoltaic (PV) system as a STATCOM, termed PV- STATCOM, which utilizes a Fuzzy Logic Controller. The primary purpose of the STATCOM is to achieve Power Oscillation Damping (POD).During the day, when the system experiences oscillations, the PV inverter in the PV- STATCOM temporarily suspends real power generation (for a few tens of seconds) to act as a STATCOM and dampen the oscillations. Once the da

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Allen, Michael A. "The Influence of Regional Power Distributions on Interdependence." Journal of Conflict Resolution 62, no. 5 (2016): 1072–99. http://dx.doi.org/10.1177/0022002716669809.

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Political economy debates about the influence of power configurations in expanding and maintaining global liberalization ebb and flow with the wax and wane of the concentration of power in the international system. This article engages the debate in a novel way from previous scholarship. Employing a series of econometric models that account for regional power, I argue that the global power concentration is ill fit to be the primary predictor of trade liberalization, but instead, regional power fluctuations can dampen and enhance global trends. By incorporating subsystemic power configurations,

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Orekhov, Genrih V., and Mikhail K. Sklyadnev. "USING THE FLOW PATH OF PRESSURE TURBINES TO DISCHARGE IDLE FLOWS." Land Reclamation and Hydraulic Engineering 15, no. 2 (2025): 380–400. https://doi.org/10.31774/2712-9357-2025-15-2-380-400.

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Purpose: to consider possible options for discharging idle flows through the flow path of the turbine of a medium- or high-head hydroelectric power plant equipped with reaction turbines. Materials and methods. A hydroelectric power plant with a pressure of about 50 m, equipped with a radial-axial turbine, is adopted as the initial data. The turbine capacity in the nominal mode is about 30 MW. According to the working hypothesis, a counter-vortex damper of the flow kinetic energy is installed in the turbine runner chamber (the turbine runner is dismantled), which is designed to dampen excess en

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Tan, Bcy, Rt Watson, and Kwok-Kee Wei. "National culture and group support systems: filtering communication to dampen power differentials." European Journal of Information Systems 4, no. 2 (1995): 82–92. http://dx.doi.org/10.1057/ejis.1995.10.

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Anttila, Sara, Jéssica S. Döhler, Janaína G. Oliveira, and Cecilia Boström. "Grid Forming Inverters: A Review of the State of the Art of Key Elements for Microgrid Operation." Energies 15, no. 15 (2022): 5517. http://dx.doi.org/10.3390/en15155517.

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In the past decade, inverter-integrated energy sources have experienced rapid growth, which leads to operating challenges associated with reduced system inertia and intermittent power generation, which can cause instability and performance issues of the power system. Improved control schemes for inverters are necessary to ensure the stability and resilience of the power system. Grid-forming inverters dampen frequency fluctuations in the power system, while grid-following inverters can aggravate frequency problems with increased penetration. This paper aims at reviewing the role of grid-forming

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Brown, D. R., J. L. La Marche, and G. E. Spanner. "Chemical Energy Storage System for Solar Electric Generating System (SEGS) Solar Thermal Power Plant." Journal of Solar Energy Engineering 114, no. 4 (1992): 212–18. http://dx.doi.org/10.1115/1.2930008.

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The Pacific Northwest Laboratory evaluated the potential feasibility of using chemical energy storage at the Solar Electric Generating System (SEGS) power plants developed by Luz International. Like sensible or latent heat energy storage systems, chemical energy storage can be beneficially applied to solar thermal power plants to dampen the impact of cloud transients, extend the daily operating period, and/or allow a higher fraction of power production to occur during high-valued peak demand periods. Higher energy storage densities make chemical energy storage a potentially attractive option.

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ALLAEV, Kahramon R., and Tokhir F. MAKHMUDOV. "Synthesizing a Power System Stabilizer Using the Fuzzy Logic and Neural Network Methods." Elektrichestvo, no. 10 (2021): 22–30. http://dx.doi.org/10.24160/0013-5380-2021-10-22-30.

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Power systems are large non-linear systems that are often subject to low frequency electromechanical oscillations with a frequency of 0.5–2.5 Hz. Power system stabilizers (PSS) are commonly used as effective and economically efficient means to dampen electromechanical oscillations of generators and increase the stability of power systems. PSS can increase the power transmission stability limits by adding a stabilizing signal through the channels of the automatic excitation control system. The article presents the results of training a neural network based on which a fuzzy logic PSS is obtained

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9

Hutta, Jan Simon. "Affective territories: cartography of aconchego as cartography of power." Geografia em Atos (Online) 5, no. 12 (2019): 8–36. http://dx.doi.org/10.35416/geoatos.v5i12.6581.

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The paper introduces an affective approach to the study of territory andterritoriality. Previous discussions of ‘territoriality’, it is shown, have commonlyfocused on symbolic dimensions. Where affect has been addressed, it has beenmostly in relation to the ‘topophilic bond’ of people and territory. Instead, thepaper suggests understanding both re- and deterritorialization processes asinherently affective. This draws attention to how a series of affective ‘vectors’ –including fear and aconchego – intensify or dampen de- and reterritorializations.Moreover, it sheds new light on the formation of

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Marrero, Agustín, Jaime González, José A. Carta, and Pedro Cabrera. "A New Control Algorithm to Increase the Stability of Wind–Hydro Power Plants in Isolated Systems: El Hierro as a Case Study." Journal of Marine Science and Engineering 11, no. 2 (2023): 335. http://dx.doi.org/10.3390/jmse11020335.

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The present paper proposes the implementation of a new algorithm for the control of the speed regulators of Pelton wheel turbines, used in many of the pumped hydroelectric energy storage systems that operate in isolated electrical systems with high renewable energy participation. This algorithm differs substantially from the standard developments which use PID or PI governors in that, in addition to acting on the nozzle needles and deflectors, it incorporates a new inner-loop pressure stabilization circuit to improve frequency regulation and dampen the effects of the pressure waves that are ge

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11

Zadehbbagheri, Mahmoud, Rahim Ildarabadi, and Tole Sutikno. "A unified power flow controller-based robust damping controller considering time delay in electrical power systems." Indonesian Journal of Electrical Engineering and Computer Science 31, no. 3 (2023): 1295. http://dx.doi.org/10.11591/ijeecs.v31.i3.pp1295-1310.

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Nowadays, different power systems are connected to each other due to technical and economic reasons and form a complex developed network. Such networks measure and send system data to decision-making centers for control and protection. This information transmission is accompanied by a delay and causes the performance of the system’s damping controllers to be affected. To improve power system dynamic stability, the supplementary controller in flexible alternating current transmission system (FACTS) devices is designed to account for information transmission delays. In these methods, to increase

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Sunarmi, Sunarmi. "Democracy in Indonesia Towards Mangkunegaran: The Fade of Javanese Royal Palace's Political Power." Al-Ulum 18, no. 1 (2018): 231–46. http://dx.doi.org/10.30603/au.v18i1.285.

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Mangkunegaran in early establishment initially had a capacity and authority armed with forces and territory, which currently only deemed as one of the cultural guardian institution even more physically interpreted as a cultural heritage object. The inability of Mangkunegaran to dampen the Anti-Swapraja Movement is actually the beginning for waning power politics in Mangkunegaran in the royal system with the doctrine of keagungbinataraan. Declarations to declaration issued by KGPAA Mangkunegara VIII to face the Anti Swapraja movement was compeletely ignored by the society. In traditional Javane

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Sun, Lin, Wei Cai, Tian Ran Li, and Hua Ren Wu. "Design of a Wide-Area Damping Controller Based on Fuzzy Control." Advanced Materials Research 960-961 (June 2014): 960–63. http://dx.doi.org/10.4028/www.scientific.net/amr.960-961.960.

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A method is proposed to design a wide-area damping controller (WADC) based on fuzzy control to dampen the low-frequency oscillations of interconnected power systems. First, the inputs and expected outputs of a fuzzy logic controller are analyzed. Then, a universe of fuzzy sets, membership functions and fuzzy rules are determined based on the relationship between inputs and outputs, and the fuzzy logic controller is constituted. The WADC consists of a fuzzy logic controller and a gain. The gain is obtained using particle swarm optimization. A four-machine two-area power system is simulated usin

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Calvo, Ernesto, and Lorena Moscovich. "Inequality, Protests, and the Progressive Allocation of Cash Transfers in the Argentine Provinces." Latin American Politics and Society 59, no. 2 (2017): 3–26. http://dx.doi.org/10.1111/laps.12016.

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AbstractIn the last 20 years, two broadly defined theories have sought to explain the relationship between economic inequality and redistribution. The well-known hypothesis set forth by Meltzer and Richard (1981) states that larger income differences between the median voter and the average income earner should increase redistributive pressures in democratic regimes. Power Resource Theory (PRT), by contrast, argues that income inequality breeds power inequality and should dampen redistribution. Critical to both theories is the translation of redistributive interest into policy signals. This ar

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S C, Manjunatha S. C. "Performance Comparison of IPFC- Based Controllers for to Dampen Oscillations in the Power system." International Journal of Emerging Trends in Engineering Research 8, no. 8 (2020): , 4262–4268. http://dx.doi.org/10.30534/ijeter/2020/36882020.

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Fengchun, Ye, Girmaw Teshager Bitew, Han Minxiao, Sun Yao, and Zhang Hanhua. "Variable Speed Pump Storage for the Mitigation of SSR in Power System with Wind Generation." Complexity 2019 (December 10, 2019): 1–11. http://dx.doi.org/10.1155/2019/3765821.

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Subsynchronous resonance (SSR) can bring significant negative effects on the grid system like stability, security, and even generator shaft damage. This work presents a new method of using a doubly-fed induction machine (DFIM) based system of variable speed pumped storage plant (VSPS) to mitigate SSR in the power system with high penetration of wind generation. The mitigation is reached based on the principle of balanced shaft mechanical input power and electromagnetic power. The fundamental concepts and phenomena of SSR with wind farm are discussed in brief in this work. For the sake of analy

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17

Manoj, Vasupalli, Prabodh Khampariya, and Ramana Pilla. "A review on techniques for improving power quality: research gaps and emerging trends." Bulletin of Electrical Engineering and Informatics 11, no. 6 (2022): 3099–107. http://dx.doi.org/10.11591/eei.v11i6.4396.

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Many issues have arisen for the electricity sector because of the widespread use of gadgets that rely on electrical power. India's energy demands are rising rapidly due to the country's rapid economic development. These days, almost every industry makes extensive use of electrical machinery and equipment. Electronic gadgets add a non-linear demand to the power grid, which can cause power quality (PQ) problems such as voltage fluctuations that can damage electrical equipment and even knock the grid down. As the use of DG units becomes more commonplace, complications related to power conversion

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Vasupalli, Manoj, Khampariya Prabodh, and Pilla Ramana. "A review on techniques for improving power quality: research gaps and emerging trends." Bulletin of Electrical Engineering and Informatics 11, no. 6 (2022): 3099–107. https://doi.org/10.11591/eei.v11i6.4396.

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Many issues have arisen for the electricity sector because of the widespread use of gadgets that rely on electrical power. India's energy demands are rising rapidly due to the country's rapid economic development. These days, almost every industry makes extensive use of electrical machinery and equipment. Electronic gadgets add a non-linear demand to the power grid, which can cause power quality (PQ) problems such as voltage fluctuations that can damage electrical equipment and even knock the grid down. As the use of DG units becomes more commonplace, complications related to power con

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19

Paul, Sourav, and Provas Roy. "Optimal Design of Power System Stabilizer Using a Novel Evolutionary Algorithm." International Journal of Energy Optimization and Engineering 7, no. 3 (2018): 24–46. http://dx.doi.org/10.4018/ijeoe.2018070102.

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In this article, an Oppositional Differential search algorithm (ODSA) is comprehensively developed and successfully applied for the optimal design of power system stabilizer (PSS) parameters which are added to the excitation system to dampen low frequency oscillation as it pertains to large power system. The effectiveness of the proposed method is examined and validated on a single machine infinite bus (SMIB) using the Heffron-Phillips model. The most important advantage of the proposed method is as it reaches toward the optimal solution without the optimal tuning of input parameters of the OD

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20

Aribowo, Widi, Bambang Suprianto, Unit Three Kartini, and Aditya Prapanca. "Dingo optimization algorithm for designing power system stabilizer." Indonesian Journal of Electrical Engineering and Computer Science 29, no. 1 (2022): 1. http://dx.doi.org/10.11591/ijeecs.v29.i1.pp1-7.

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The dingo optimization algorithm (DOA) adopts the social life of dingo dogs. The dingo is a breed of ancient dog originating from Australia. Dingo hunting strategies such as assault with persecution, flocking, and scavenging behavior became the inspiration for DOA. In this paper, DOA is applied to a power system stabilizer (PSS) to dampen low-frequency oscillations (LFO) in a single-machine infinite bus (SMIB). DOA is used to obtain optimal parameters for PSS. The damping controller is designed for optimal lead-lag control. To obtain the performance of the DOA method, the results were compared

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Aribowo, Widi, Bambang Suprianto, Unit Three Kartini, and Aditya Prapanca. "Dingo optimization algorithm for designing power system stabilizer." Indonesian Journal of Electrical Engineering and Computer Science 29, no. 1 (2023): 1–7. https://doi.org/10.11591/ijeecs.v29.i1.pp1-7.

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The dingo optimization algorithm (DOA) adopts the social life of dingo dogs. The dingo is a breed of ancient dog originating from Australia. Dingo hunting strategies such as assault with persecution, flocking, and scavenging behavior became the inspiration for DOA. In this paper, DOA is applied to a power system stabilizer (PSS) to dampen low-frequency oscillations (LFO) in a single-machine infinite bus (SMIB). DOA is used to obtain optimal parameters for PSS. The damping controller is designed for optimal lead-lag control. To obtain the performance of the DOA method, the results were compared

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22

Mahmoud, Zadehbagheri, Ildarabadi Rahim, and Sutikno Tole. "A unified power flow controller-based robust damping controller considering time delay in electrical power systems." A unified power flow controller-based robust damping controller considering time delay in electrical power systems 31, no. 3 (2023): 1295–310. https://doi.org/10.11591/ijeecs.v31.i3.pp1295-1310.

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Nowadays, different power systems are connected to each other due to technical and economic reasons and form a complex developed network. Such networks measure and send system data to decision-making centers for control and protection. This information transmission is accompanied by a delay and causes the performance of the system’s damping controllers to be affected. To improve power system dynamic stability, the supplementary controller in flexible alternating current transmission system (FACTS) devices is designed to account for information transmission delays. In these methods, to in

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23

Ziyaad, H. Saleh, H. Ali Zaid, W. Daoud Raid, and H. Ahmed Ahmed. "A study of voltage regulation in microgrid using a DSTATCOM." Bulletin of Electrical Engineering and Informatics 9, no. 5 (2020): 1766–73. https://doi.org/10.11591/eei.v9i5.2442.

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A well-prepared abstract enables the reader to identify the basic content. This paper presents the solution of voltage fluctuations in urgent situations by providing voltage and reactive support from a distribution static synchronous compensator (DSTATCOM) in the grid. Also, it analyses the influences of DSTATCOM as a voltage controller and compares the system performance with and without DSTATCOM. The DSTATCOM is used in the study to maintain voltage in the microgrid (MG) to be around the rated value after Microgrid disturbance. A successful simulink model of the photovoltaic (PV) system and

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Detjen, D., J. Jacobs, R. W. De Doncker, and H. G. Mall. "A new hybrid filter to dampen resonances and compensate harmonic currents in industrial power systems with power factor correction equipment." IEEE Transactions on Power Electronics 16, no. 6 (2001): 821–27. http://dx.doi.org/10.1109/63.974380.

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Hamanah, Waleed M., A. Baraean, and Asif Islam. "Power System Stabilizer Based on Artificial Bee Colony Algorithms." Energies and Quality Journal 2 (July 2024): 31–36. http://dx.doi.org/10.24084/eqj24.223.

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Transient stability of power systems is increasingly enhanced through the use of fuzzy logic systems compared with classical controllers. Fuzzy Logic Power System Stabilizers (FLPSS) are optimized in this paper using an Artificial Bee Colony Optimization Algorithm (ABC). ABC-FLPSS has been evaluated using two-area 4- machine and eleven-bus multimachine power systems. For optimizing fuzzy logic power system stabilizer scaling factors, an objective function is formulated as the Integral Squared Error of rotor speed deviation. Changes in parameter values as well as removal of transmission lines a

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Kleinfeld, Rachel, and Nicole Bibbins Sedaca. "How to Prevent Political Violence." Journal of Democracy 35, no. 4 (2024): 35–45. http://dx.doi.org/10.1353/jod.2024.a937732.

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ABSTRACT: In the United States, France, and Germany, political violence has been rising. Three factors are salient: Polarization convinces some people that violence is acceptable to keep opponents from power; extreme political parties normalize polarization and violence, leading to attacks from—and against—their supporters; and the democratically disillusioned use violence, not votes, to express themselves. Political violence can be reduced if: 1) leaders insist on nonviolence; 2) governments and politicians support the rule of law, accountability, and equitable policing; 3) voting systems dam

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Greene, Gayle. "Science with a Skew: The Nuclear Power Industry After Chernobyl and Fukushima." Asia-Pacific Journal 11, S6 (2013): 52–68. https://doi.org/10.1017/s1557466013025138.

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Greene's article explores more deeply the health dangers facing people exposed to long-term low dosages of radiation, as is inevitable for those near the Fukushima plant. An English professor, Greene developed interested in the health effects of low-level radiation when she authored a biography of the late epidemiologist Alice Stewart, who pioneered research in that field. Greene contends that the global media is downplaying these dangers, and she presents alternate studies that show that exposure to radiation following the Chernobyl disaster caused many medical problems. These extend beyond c

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Hosseinpour, Majid, Tooraj Sabetfar, and Abdolmajid Dejamkhooy. "Power Conditioner Design and Control for a Grid-Connected Proton Exchange Membrane Fuel Cell." Jordan Journal of Electrical Engineering 9, no. 1 (2023): 98. http://dx.doi.org/10.5455/jjee.204-1665256518.

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In this paper, the design, control and stability analysis of the inverter-based power conditioner - which is connected to the low voltage grid via an LCL filter - is presented to manage the power flow of the Proton Exchange Membrane Fuel Cell (PEMFC). Since the PEMFC-generated voltage is lower than the grid voltage, a DC-DC converter is utilized to increase the PEMFC output voltage. The LCL filter is employed to improve the injected current quality and to reduce the inverter output voltage distortions. This filter can cause resonance and system instability. The current double feedback control

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PRAKASARAO, D. "New Control Strategy Based PV- STATCOM for Mitigation of Power Oscillation Damping." INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 09, no. 06 (2025): 1–9. https://doi.org/10.55041/ijsrem51133.

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Flexible AC Transmission Systems (FACTS) like the Static Synchronous Compensator (STATCOM) are commonly employed to enhance the performance and stability of power networks. This study introduces a photovoltaic (PV)-based STATCOM system, referred to as PV-STATCOM, which incorporates a Fuzzy Logic Controller (FLC) to effectively mitigate power oscillations. The core functionality of the proposed system involves temporarily suspending the PV system’s real power output during daytime disturbances. When oscillations are detected, the PV inverter halts energy production for a brief period—typically

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Yan, Yun Bing, Fu Wu Yan, and Chang Qing Du. "Research on Dynamic Torque Control Strategy for Parallel Hybrid Electric Vehicle." Advanced Materials Research 228-229 (April 2011): 951–56. http://dx.doi.org/10.4028/www.scientific.net/amr.228-229.951.

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It is necessary for Parallel Hybrid Electric Vehicle (PHEV) to distribute energy between engine and motor and to control state-switch during work. Aimed at keeping the total torque unchanging under state-switch, the dynamic torque control algorithm is put forward, which can be expressed as motor torque compensation for engine after torque pre-distribution, engine speed regulation and dynamic engine torque estimation. Taking Matlab as the platform, the vehicle control simulation model is built, based on which the fundamental control algorithm is verified by simulation testing. The results demon

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Jung, Jinwoo, Jihwan Kim, and Changha Jin. "DOES MACHINE LEARNING PREDICTION DAMPEN THE INFORMATION ASYMMETRY FOR NON-LOCAL INVESTORS?" International Journal of Strategic Property Management 26, no. 5 (2022): 345–61. http://dx.doi.org/10.3846/ijspm.2022.17590.

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In this study, we examine the prediction accuracy of machine learning methods to estimate commercial real estate transaction prices. Using machine learning methods, including Random Forest (RF), Gradient Boosting Machine (GBM), Support Vector Machine (SVM), and Deep Neural Networks (DNN), we estimate the commercial real estate transaction price by comparing relative prediction accuracy. Data consist of 19,640 transaction-based office properties provided by Costar corresponding to the 2004–2017 period for 10 major U.S. CMSA (Consolidated Metropolitan Statistical Area). We conduct each machine l

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Friedkin, Noah E. "A Formal Theory of Reflected Appraisals in the Evolution of Power." Administrative Science Quarterly 56, no. 4 (2011): 501–29. http://dx.doi.org/10.1177/0001839212441349.

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This article investigates the evolution of power with a formal theory that focuses on the influence network through which control of a group’s outcomes emerges via direct and indirect interpersonal influences on group members’ positions on a series of issues over time. Power evolves when individuals’ openness or closure to interpersonal influences correspond with their prior relative control over the group’s issue outcomes. In groups with members who are appraising the relative power of their members over the outcomes of prior issues, a mechanism of “reflected appraisals” will elevate and damp

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Aribowo, Widi. "A Novel Improved Sea-Horse Optimizer for Tuning Parameter Power System Stabilizer." Journal of Robotics and Control (JRC) 4, no. 1 (2023): 12–22. http://dx.doi.org/10.18196/jrc.v4i1.16445.

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Power system stabilizer (PSS) is applied to dampen system oscillations so that the frequency does not deviate beyond tolerance. PSS parameter tuning is increasingly difficult when dealing with complex and nonlinear systems. This paper presents a novel hybrid algorithm developed from incorporating chaotic maps into the sea-horse optimizer. The algorithm developed is called the chaotic sea-horse optimizer (CSHO). The proposed method is adopted from the metaheuristic method, namely the sea-horse optimizer (SHO). The SHO is a method that duplicates the life of a sea-horse in the ocean when it move

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Ramalingegowda, Chethan Hiremarali, Mageshvaran Rudramoorthy, and K. M. Mahesh Kumar. "Design a novel SSSC based FOPID controller for the hybrid PV-DFIG-based system to enhance transient stability and dampen power oscillations." International Journal of Power Electronics and Drive Systems (IJPEDS) 16, no. 2 (2025): 1368. https://doi.org/10.11591/ijpeds.v16.i2.pp1368-1375.

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<p>The integration of photovoltaic (PV) and wind energy systems is becoming in<br />creasingly significant in the modern energy sector. Among various technologies,<br /> doubly fed induction generator (DFIG)-based wind power systems are exten<br />sively utilized due to their superior power control capabilities. Conventional<br /> control strategies, such as proportional-integral (PI) controllers, are commonly<br /> implemented to stabilize system waveforms. However, recent advancements<br /> highlight the potential for improved oscillation damping thr

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Nova Yulianti, Iswantir M, Salmi Wati, and Hamdi Abdul Karim. "Kreativitas Guru Dalam Penggunaan Media Power Point Pada Pembelajaran Pendidikan Agama Islam Di SMPN 2 Koto Balingka Kabupaten Pasaman Barat." Perspektif : Jurnal Pendidikan dan Ilmu Bahasa 1, no. 4 (2023): 261–71. http://dx.doi.org/10.59059/perspektif.v1i4.752.

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The purpose of this study was to learn how creative the PAI teachers at SMPN 2 Koto Balingka were when using the presentation software Power Point to engage their students who were less engaged in the learning process and more likely to experience frustration and boredom. And the pitfalls that teachers have to deal with while using Power Point. This study employed a descriptive quantitative methodology.Researchers play direct roles as planners, implementers, data collectors, data analysts, and report writers.Collecting information by means of observation, interviews, and written records.Inform

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Kazakov, Yu B., and I. S. Egorov. "Electrical system for converting vibration energy based on the combined operation of a linear generator and a magnetic fluid damper." Vestnik IGEU, no. 1 (February 28, 2025): 67–74. https://doi.org/10.17588/2072-2672.2025.1.067-074.

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Linear generators used as autonomous sources of electric power and electromechanical shock absorbers convert vibration energy into electric energy with a linear reciprocating motion of the inductor. The EMF of the generator has a non-sinusoidal shape due to higher spatial and temporal harmonics. The change in the speed of the inductor is determined by the nature of the acting forces, but during the analysis, it is usually taken as harmonic with a sinusoidal distribution of magnetic induction. Reduction of EMF harmonics is possible in an electrical system with a linear generator and a magnetic

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Broten, T. P., and J. E. Zehr. "Autonomic modulation of ultradian blood pressure and heart rate oscillations in dogs." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 256, no. 5 (1989): R1127—R1137. http://dx.doi.org/10.1152/ajpregu.1989.256.5.r1127.

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Autonomic receptor modulation of ultradian oscillations of blood pressure and heart rate was studied in telemetered free-running dogs. Data, analyzed for their harmonic content by fast Fourier transform (FFT) methods, indicated that ultradian and circadian oscillations of 22.9 +/- 2.5 and 10.5 +/- 0.9 (SD) mmHg, respectively, were present. The average principal frequency for the ultradian oscillations in 12 dogs was 0.760 +/- 0.11 cycles/h for arterial pressure and 0.808 +/- 0.10 for heart rate. Atropine had no effect on periodicity of either arterial pressure or heart rate. Metoprolol, a beta

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Anyangwe, C. N., C. N. Anyanwu, and C. Udanor. "Investigating Droop Control Contribution to Grid Resilience by Maintaining Frequency Stability During Grid Disturbances." Transactions on Engineering and Computing Sciences 13, no. 02 (2025): 84–94. https://doi.org/10.14738/tecs.1302.18485.

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In contrast to conventional power plants, which are based on large synchronous generators with large inertia capabilities to dampen sudden disturbances, renewable energy sources, such as solar and wind, connected to the grid through power electronics converters, display low system inertia and overload limiting capabilities. Additionally, because they lack primary frequency regulation capabilities, they are unable to actively respond to the frequency response of the system. This research investigates the contribution of droop control strategies to grid resilience by focusing on their ability to

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Anyangwe, C. N. "Investigating Droop Control Contribution to Grid Resilience by Maintaining Frequency Stability During Grid Disturbances." Transactions on Machine Learning and Artificial Intelligence 13, no. 02 (2025): 84–94. https://doi.org/10.14738/tmlai.1302.18485.

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In contrast to conventional power plants, which are based on large synchronous generators with large inertia capabilities to dampen sudden disturbances, renewable energy sources, such as solar and wind, connected to the grid through power electronics converters, display low system inertia and overload limiting capabilities. Additionally, because they lack primary frequency regulation capabilities, they are unable to actively respond to the frequency response of the system. This research investigates the contribution of droop control strategies to grid resilience by focusing on their ability to

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Zaman, Haider, Xiaohua Wu, Xiancheng Zheng, Shahbaz Khan, and Husan Ali. "Suppression of Switching Crosstalk and Voltage Oscillations in a SiC MOSFET Based Half-Bridge Converter." Energies 11, no. 11 (2018): 3111. http://dx.doi.org/10.3390/en11113111.

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The silicon carbide (SiC) MOSFET is characterized by high operating voltage, temperature, switching frequency and efficiency which enables a converter to achieve high power density. However, at high switching frequency, the crosstalk phenomenon occurs when the gate voltage spike introduced by high dv/dt and voltage ringing forces false turn-on of SiC MOSFET which causes a crow-bar current thereby increasing switching losses. In order to increase the immunity against the crosstalk phenomenon in a half-bridge configuration, this paper presents a gate driver for SiC MOSFET capable of generating t

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Oni, Oluwafemi Emmanuel, and Omowunmi Mary Longe. "Analysis of Secondary Controller on MTDC Link with Solar PV Integration for Inter-Area Power Oscillation Damping." Energies 16, no. 17 (2023): 6295. http://dx.doi.org/10.3390/en16176295.

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Integration of renewable energy sources is important in limiting the continuous environmental degradation and emissions caused by energy generation from fossil fuels and thus becoming a better alternative for a large-scale power mix. However, an adequate analysis of the interaction with the alternating current (AC) network during network disturbance, especially during inter-area power (IAP) oscillations is needed. Insufficient damping of oscillations can significantly impact the reliability and effective operation of a whole power system. Therefore, this paper focuses on the stability of the m

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Srivastava, Manish, Prakhar Singh, Sandeep Verma, and Prince Singh. "Power Flow Control in Transmission Line by Using UPFC." International Journal of Research in Engineering, Science and Management 4, no. 4 (2021): 126–29. http://dx.doi.org/10.47607/ijresm.2021.670.

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The power transfer capacity of electrical transmission lines is typically constrained by the capacity of large signals. Economic considerations such as the high cost of long lines and the income from the supply of additional power make it possible to pursue both economically and technically viable ways to increase the stability cap intensively. On the other hand, the production of efficient ways to use the full thermal capacity of transmission systems. The power industry has already begun to be affected by fast development in the field of power electronics. This is one direct consequence of th

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Saleh, Ziyaad H., Zaid H. Ali, Raid W. Daoud, and Ahmed H. Ahmed. "A study of voltage regulation in microgrid using a DSTATCOM." Bulletin of Electrical Engineering and Informatics 9, no. 5 (2020): 1766–73. http://dx.doi.org/10.11591/eei.v9i5.2442.

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A well-prepared abstract enables the reader to identify the basic content. This paper presents the solution of voltage fluctuations in urgent situations by providing voltage and reactive support from a distribution static synchronous compensator (DSTATCOM) in the grid. Also, it analyses the influences of DSTATCOM as a voltage controller and compares the system performance with and without DSTATCOM. The DSTATCOM is used in the study to maintain voltage in the microgrid (MG) to be around the rated value after Microgrid disturbance. A successful simulink model of the photovoltaic (PV) system and

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Dettrey, Bryan J., and Leslie A. Schwindt-Bayer. "Voter Turnout in Presidential Democracies." Comparative Political Studies 42, no. 10 (2009): 1317–38. http://dx.doi.org/10.1177/0010414009332125.

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Numerous studies indicate that political institutions play an important role in explaining variation in voter turnout across countries. The nuances of institutions unique to presidential elections have been largely overlooked, however, despite the different incentives they offer for voters to participate in elections. This article examines the effect that four presidential institutions had on voter turnout in presidential elections between 1974 and 2004—the timing of elections (whether concurrent or nonconcurrent), the power of the presidency, presidential electoral rules (plurality or majorit

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Araujo, Thalles, Jeff Hansen, Michael Cuttler, and Ryan Lowe. "THE RELATIVE CONTRIBUTIONS OF WAVE POWER AND SEA LEVEL TO COASTAL EROSION IN REEF-FRONTED SANDY BEACHES." Coastal Engineering Proceedings, no. 38 (May 29, 2025): 97. https://doi.org/10.9753/icce.v38.sediment.97.

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Coastal erosion in sandy beaches can be caused by numerous factors. Examples include wave energy, sea level, riverine runoff, terrain subsidence, and climate oscillations. Fringing reefs impose an additional layer of complexity to the morphodynamics of such systems. They act as rigid structures that can both dampen wave energy and induce intricate wave-induced circulation patterns. It has been hypothesized that, when compared to open-ocean beaches, wave-induced erosion at reef- fronted beaches is more sensitive to changes in the sea level. The reason for this is that fringing reefs can act as

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Soares, Luccas Tadeu Farnezes, Arthur Costa de Souza, Waner Wodson Aparecido Gonçalves Silva, Luiz Felipe Pugliese, and Guilherme Henrique Alves. "Grid-Connected Photovoltaic Systems with Energy Storage for Ancillary Services." Energies 16, no. 21 (2023): 7379. http://dx.doi.org/10.3390/en16217379.

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This paper presents the topology and control of a photovoltaic inverter with an internal battery storage system in conjunction with droop control designed to perform ancillary services such as frequency and reactive power support (voltage regulation), active power dispatch through a proposal to control the charging and discharging of batteries and harmonic current compensation (active filter) in a microgrid connected to an IEEE 13-bus system. The converter in question consists of two stages, a 3-level NPC DC/AC converter and Boost and Buck-Boost DC/DC converters. The system in question is capa

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Asendorpf, Jens B. "Individual response profiles in the behavioral assessment of personality." European Journal of Personality 2, no. 2 (1988): 155–67. http://dx.doi.org/10.1002/per.2410020209.

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A long‐standing problem in the behavioural assessment of personality is the individual specificity of responses. Often, different persons externalize the same trait in different responses. One solution to this problem is to aggregate many different responses. The paper compares the power of response aggregation for predicting self‐and other‐ratings of personality with two alternative strategies of response selection: the nomothetic strategy of selecting the response with the highest overall predictive power, and the more idiographic strategy of selecting, for each individual, the most extreme

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LeBas, Adrienne. "Who Trusts? Ethnicity, Integration, and Attitudes Toward Elected Officials in Urban Nigeria." Comparative Political Studies 53, no. 10-11 (2020): 1738–66. http://dx.doi.org/10.1177/0010414020912269.

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In the developing world, politicians often use public office to redistribute resources to their core constituencies. This form of clientelistic exchange motivates ethnic voting in Africa and may also shape broader attitudes toward the state. But does clientelism retain its power as cross-ethnic contact increases, or might new forms of political linkage emerge? This article uses public opinion data from urban Nigeria to investigate how social position affects trust in elected local officials. The article finds that local ethnic minorities are less trusting of local officials, but this trust def

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Dai, Le, Doan Tung, and Le Quyen. "A Highly Relevant Method for Incorporation of Shunt Connected FACTS Device into Multi-Machine Power System to Dampen Electromechanical Oscillations." Energies 10, no. 4 (2017): 482. http://dx.doi.org/10.3390/en10040482.

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Novendra, Irvandy Ilza, I. Made Wirawan, Arya Kusumawardana, and Aung Ko Latt. "Optimization of load frequency control using grey wolf optimizer in micro hydro power plants." Journal of Mechatronics, Electrical Power, and Vehicular Technology 14, no. 2 (2023): 166–76. http://dx.doi.org/10.14203/j.mev.2023.v14.166-176.

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Micro hydro power plants (MHPP) is one of the renewable energy that can be utilized as a distributed generation with controllable power output. One common issue in MHPP systems is the non-constant rotation of the generator caused by load fluctuations. This instability leads to variable frequencies, which can potentially harm electrical equipment. To address this problem, the volume of water entering through the governor can be adjusted to synchronize the turbine and generator rotation with the load. This approach helps dampen frequency oscillations and ensures that the system operates within d

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