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Articoli di riviste sul tema "Converter-Driven stability"

Autore: Grafiati

Pubblicato: 11 gennaio 2025

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1

Luo, Jianqiang, Yiqing Zou, Siqi Bu, and Ulas Karaagac. "Converter-Driven Stability Analysis of Power Systems Integrated with Hybrid Renewable Energy Sources." Energies 14, no. 14 (2021): 4290. http://dx.doi.org/10.3390/en14144290.

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Renewable energy sources such as wind power and photovoltaics (PVs) have been increasingly integrated into the power system through power electronic converters in recent years. However, power electronic converter-driven stability has issues under specific circumstances, for instance, modal resonances might deteriorate the dynamic performance of the power systems or even threaten the overall stability. In this work, the integration impact of a hybrid renewable energy source (HRES) system on modal interaction and converter-driven stability was investigated in an IEEE 16-machine 68-bus power syst

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2

Quester, Matthias, Fisnik Loku, Otmane El Azzati, Leonel Noris, Yongtao Yang, and Albert Moser. "Investigating the Converter-Driven Stability of an Offshore HVDC System." Energies 14, no. 8 (2021): 2341. http://dx.doi.org/10.3390/en14082341.

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Offshore wind farms are increasingly built in the North Sea and the number of HVDC systems transmitting the wind power to shore increases as well. To connect offshore wind farms to adjacent AC transmission systems, onshore and offshore modular multilevel converters transform the transmitted power from AC to DC and vice versa. Additionally, modern wind farms mainly use wind turbines connected to the offshore point of common coupling via voltage source converters. However, converters and their control systems can cause unwanted interactions, referred to as converter-driven stability problems. Th

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3

Yellisetti, Viswaja, and Albert Moser. "Complexity Reduction for Converter-Driven Stability Analysis in Transmission Systems." Electronics 14, no. 1 (2024): 55. https://doi.org/10.3390/electronics14010055.

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The high penetration of power electronic converters with complex control systems is changing the power system dynamics, introducing new challenges such as converter-driven stability incidents. Traditional stability analysis methods, suitable for classical problems like voltage, frequency, and rotor angle stability in large systems, are insufficient for addressing the fast control dynamics of converters, which involve electromagnetic phenomena. These phenomena require detailed converter and network modeling, which can be performed in both the frequency and time domains, enabling the respective

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4

Kong, Le, Yaosuo Xue, Liang Qiao, and Fei Wang. "Review of Small-Signal Converter-Driven Stability Issues in Power Systems." IEEE Open Access Journal of Power and Energy 9 (2022): 29–41. http://dx.doi.org/10.1109/oajpe.2021.3137468.

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5

Luo, Jianqiang, Fei Teng, Siqi Bu, et al. "Converter-driven stability constrained unit commitment considering dynamic interactions of wind generation." International Journal of Electrical Power & Energy Systems 144 (January 2023): 108614. http://dx.doi.org/10.1016/j.ijepes.2022.108614.

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6

Yao, Yao, Fidegnon Fassinou, and Tingshu Hu. "Stability and Robust Regulation of Battery-Driven Boost Converter With Simple Feedback." IEEE Transactions on Power Electronics 26, no. 9 (2011): 2614–26. http://dx.doi.org/10.1109/tpel.2011.2112781.

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7

Saridaki, Georgia, Alexandros G. Paspatis, Panos Kotsampopoulos, and Nikos Hatziargyriou. "An investigation of factors affecting Fast-Interaction Converter-driven stability in Microgrids." Electric Power Systems Research 223 (October 2023): 109610. http://dx.doi.org/10.1016/j.epsr.2023.109610.

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8

Jeevajothi, R., and D. Devaraj. "Voltage stability enhancement using an adaptive hysteresis controlled variable speed wind turbine driven EESG with MPPT." Journal of Energy in Southern Africa 25, no. 2 (2014): 48–60. http://dx.doi.org/10.17159/2413-3051/2014/v25i2a2669.

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This paper investigates the enhancement in voltage stability achieved while connecting a variable speed wind turbine (VSWT) driven electrically excited synchronous generator (EESG) into power systems. The wind energy conversion system (WECS) uses an AC-DC-AC converter system with an uncontrolled rectifier, maximum power point tracking (MPPT) controlled dc-dc boost converter and adaptive hysteresis controlled voltage source converter (VSC). The MPPT controller senses the rectified voltage (VDC) and traces the maximum power point to effectively maximize the output power. With MPPT and adaptive h

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9

Quan, Xuli, Xinchun Lin, Yun Zheng, and Yong Kang. "Transient Stability Analysis of Grid-Connected Converter Driven by Imbalance Power under Non-Severe Remote Voltage Sag." Energies 14, no. 6 (2021): 1737. http://dx.doi.org/10.3390/en14061737.

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In the transient process of the grid-connected converter (GCC), the existing research mainly focuses on the impact of the control loops. Little attention is paid to the transient stability issues driven by the imbalance between the input power and output power of GCC. This paper shows that the transient stability issues will still exist even if ignoring the dynamics of phase-locked loop (PLL) and current loop. In this paper, the models of the AC grid and the GCC are built under the assumption that the dynamics of the PLL and current loop are ignored. Then, by analyzing the transient process of

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10

Chouya, Ahmed. "Adaptive Sliding Mode Control with Chattering Elimination for Buck Converter Driven DC Motor." WSEAS TRANSACTIONS ON SYSTEMS 22 (February 24, 2023): 19–28. http://dx.doi.org/10.37394/23202.2023.22.3.

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The Adaptive Sliding Mode Control (ASMC) that combines a robust proportional derivative control law for use in Buck converter driven DC motor is presented in this paper. Based on the LYAPUNOV theory, the proportional derivative control law is designed to eliminate the chattering action of the control signal. The simplicity of the proposed scheme facilitates its implementation and the overall control scheme guarantees the global asymptotic stability in the LYAPUNOV sense if all the signals involved are uniformly bounded. Simulation studies have shown that the proposed controller shows superior

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11

Ding, Xinrui, Mingqi Chen, Caiman Yan, Huaxing Guo, Changkun Shao, and Binhai Yu. "Enhancing Thermal Stability of Laser-Driven Phosphor Converter by Utilizing Copper Powder Sintering Framework/Paraffin." IEEE Transactions on Electron Devices 69, no. 2 (2022): 582–89. http://dx.doi.org/10.1109/ted.2021.3136803.

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12

Benhalima, Seghir, Rezkallah Miloud, and Ambrish Chandra. "Real-Time Implementation of Robust Control Strategies Based on Sliding Mode Control for Standalone Microgrids Supplying Non-Linear Loads." Energies 11, no. 10 (2018): 2590. http://dx.doi.org/10.3390/en11102590.

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In this paper enhanced control strategies for standalone microgrids based on solar photovoltaic systems (SVPAs) and diesel engine driven fixed speed synchronous generators, are presented. Single-phase d-q theory-based sliding mode controller for voltage source converter voltage source converter (VSC) is employed to mitigate harmonics, balance diesel generator (DG) current, and to inject the generated power by SVPA into local grid. To achieve fast dynamic response with zero steady-state error during transition, sliding mode controller for inner control loop is employed. To achieve maximum power

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13

Aatabe, Mohamed, Fatima El Guezar, Hassane Bouzahir, and Alessandro N. Vargas. "Constrained stochastic control of positive Takagi-Sugeno fuzzy systems with Markov jumps and its application to a DC-DC boost converter." Transactions of the Institute of Measurement and Control 42, no. 16 (2020): 3234–42. http://dx.doi.org/10.1177/0142331220947553.

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This paper presents a stabilization control for positive, Takagi-Sugeno fuzzy systems subject to Markov jump parameters. In the continuous-time formulation, the approach guarantees mean-square stability with constraints on the control—the main condition hinges upon linear matrix inequalities. The proposed method’s usefulness is illustrated by a practical-oriented example, which was designed to control the output voltage of a DC-DC boost converter subject to both voltage and load variations driven by a Markov chain.

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14

Zhang, Wei, Shizhen Li, Yanjun Liu, Detang Li, and Qin He. "Optimal Control for Hydraulic Cylinder Tracking Displacement of Wave Energy Experimental Platform." Energies 13, no. 11 (2020): 2876. http://dx.doi.org/10.3390/en13112876.

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The wave energy converter captures the wave power by buoy’s heaving motion, transfers it by hydraulic system, and converts it into the electric power by generator. The hydraulic conversion system plays an important role that can realize the effective regulation of the output power. In order to develop the working characteristics of the hydraulic transmission system, a new wave energy experimental platform was devised. The platform adopts the matching design mode of the driving oil cylinder and the driven oil cylinder. The active hydraulic cylinder and the clump weight can simulate the movement

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15

Chub, Andrii, Oleksandr Husev, and Dmitri Vinnikov. "Simulation Study of Nonlinear PI-Controller with Quasi-Z-Source Derived Push-Pull Converter." Electrical, Control and Communication Engineering 4, no. 1 (2013): 26–31. http://dx.doi.org/10.2478/ecce-2013-0018.

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Abstract This paper is focused on the control issues of the quasi-Z-source derived push-pull converter with integrated magnetic elements. The proposed converter is intended for applications that require a high gain of the input voltage and galvanic isolation, i.e. power conditioning systems for renewable energy sources, such as variable speed wind turbines with direct driven permanent magnet synchronous generators. Magnitude and frequency of the output voltage of such turbines are variable due to intermittent nature of the wind power. Despite number of advantages converter has complicated dyna

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16

Thin, Aye Myat, and Nang Saw Yuzana Kyaing. "Performance Analysis of Doubly Fed Induction Generator Using Vector Control Technique." International Journal of Electrical and Computer Engineering (IJECE) 5, no. 5 (2015): 929. http://dx.doi.org/10.11591/ijece.v5i5.pp929-938.

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There are many solar power and wind stations installed in the power system for environmental and economic reasons. In fact, wind energy is inexpensive and the safetest among all sources of renewable energy, it has been recognized that variable speed wind turbine based on the doubly fed induction generator. It is the most effective with less cost and high power yield. This paper has chosen doubly fed induction generator for a comprehensive study of modelling, performance and analysing. DFIG wind turbine has to operate below and above synchronous speed which requires smooth transition mode chang

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17

Manohar Reddy, Ram, Shaik Hussain Vali, Phanindra Thota, and Kamaraju V. Kamaraju. "Modelling And Analysis Of Pvsc Type Buck Buck-Boost Dc-Dc Converter." International Conference on Information Science and Technology Innovation (ICoSTEC) 1, no. 1 (2022): 77–82. http://dx.doi.org/10.35842/icostec.v1i1.23.

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In the era of modern industrial development, power electronics equipment has been developed aggressively and brought dc system again in power utilization to use clean energy resources like solar array, fuel cell, wind generator, etc. Since the past decade, power electronics equipment has become very popular; hence, the switch-mode converter requirement is increasing rapidly day by day in applications like communication power supply, space crafts, hybrid electric vehicles, micro-grid and nano-grids. Among the various available configurations of converters, Multi-Input DC/DC converters became mo

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18

Yurish, Sergey Y. "Advanced Analog-to-Digital Conversion Using Voltage-to-Frequency Converters for Remote Sensors." Key Engineering Materials 381-382 (June 2008): 623–26. http://dx.doi.org/10.4028/www.scientific.net/kem.381-382.623.

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This paper presents an advanced analog-to-digital conversion technique based on a voltage-to-frequency-to-digital conversion that is suitable for remote sensors, telemetry applications and multichannel data acquisition systems. A voltage-to-frequency conversion part can be based, for example, on high performance, charge-balance voltage-to-frequency converter (VFC), where monostable is replaced by a bistable, driven by an external clock, or other existing high performance VFCs. The frequency-to-digital converter “bottleneck” problem in such promised ADC scheme was solved due to proposed advance

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19

Mirmohammad, Marzie, and Sahar Pirooz Azad. "Control and Stability of Grid-Forming Inverters: A Comprehensive Review." Energies 17, no. 13 (2024): 3186. http://dx.doi.org/10.3390/en17133186.

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The large integration of inverter-based resources will significantly alter grid dynamics, leading to pronounced stability challenges due to fundamental disparities between inverter-based and traditional energy systems. While grid-following inverters (GFLIs) dominate current inverter configurations, their increased penetration into the grid can result in major stability issues. In contrast, grid-forming inverters (GFMIs) excel over GFLIs by offering features like standalone operation, frequency support, and adaptability in weak grid scenarios. GFMIs, unlike GFLIs, control the AC voltage and fre

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20

Su, Xianlong, and Jinming Gao. "Research on Low-Voltage Ride-Through and Intelligent Optimization Control of Wind Turbines Based on Hybrid Power Prediction Models." Electronics 13, no. 24 (2024): 4886. https://doi.org/10.3390/electronics13244886.

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This paper proposes a dual-loop back-to-back converter coordination control scheme with a DC-side voltage as the primary control target, along with a CROW unloading control strategy for low voltage ride-through (LVRT) capability enhancement. The feasibility and effectiveness of the proposed system topology and control strategy are verified through MATLAB/Simulink simulations. Furthermore, a hybrid short-term wind power prediction model based on data-driven and deep learning techniques (CEEMDAN-CNN-Transformer-XGBoost) is introduced in the wind turbine control system. The coordination control s

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21

Demoulias, Charis S., Kyriaki-Nefeli D. Malamaki, Spyros Gkavanoudis, et al. "Ancillary Services Offered by Distributed Renewable Energy Sources at the Distribution Grid Level: An Attempt at Proper Definition and Quantification." Applied Sciences 10, no. 20 (2020): 7106. http://dx.doi.org/10.3390/app10207106.

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The gradual displacement of synchronous generators driven by conventional power plants, due to the increasing penetration of distributed renewable energy sources (DRES) in distribution grids, is creating a shortage of crucial ancillary services (AS) which are vital for the frequency and voltage stability of the grid. These AS, and some new ones, could now be offered by the DRES, particularly those that are converter interfaced, in a coordinated way in order to preserve the grid stability and resilience. Although recent standards and grid codes specify that the DRES exhibit some system support

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22

Sabo, Aliyu, Bashir Yunus Kolapo, Theophilus Ebuka Odoh, Musa Dyari, Noor Izzri Abdul Wahab, and Veerapandiyan Veerasamy. "Solar, Wind and Their Hybridization Integration for Multi-Machine Power System Oscillation Controllers Optimization: A Review." Energies 16, no. 1 (2022): 24. http://dx.doi.org/10.3390/en16010024.

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Massive growth in global electrical energy demand has necessitated a genuine exploration and integration of solar and wind energy into the electrical power mix. This incorporation goes a long way in improving the cumulative generated power capacity of the power system. However, wind and solar photovoltaic (PV) are intermittent in nature, making the provisioning of a good maximum power tracking (MPPT) scheme necessary. Furthermore, the integration is characterized by synchronization challenges and introduces various modes of power system oscillations as it is converter-driven. This greatly affe

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23

Zhou, Sihan, Liang Qin, Hui Sun, et al. "TransFNN: A Novel Overtemperature Prediction Method for HVDC Converter Valves Based on an Improved Transformer and the F-NN Algorithm." Sensors 23, no. 8 (2023): 4110. http://dx.doi.org/10.3390/s23084110.

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Appropriate cooling of the converter valve in a high-voltage direct current (HVDC) transmission system is highly significant for the safety, stability, and economical operation of a power grid. The proper adjustment of cooling measures is based on the accurate perception of the valve’s future overtemperature state, which is characterized by the valve’s cooling water temperature. However, very few previous studies have focused on this need, and the existing Transformer model, which excels in time-series predictions, cannot be directly applied to forecast the valve overtemperature state. In this

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24

Valipour, Khalil, and Reza Najafi. "Performance Evaluation of Doubly-Fed Induction Generator Using Combined Vector Control and Direct Power Control Method." Indonesian Journal of Electrical Engineering and Computer Science 3, no. 1 (2016): 49. http://dx.doi.org/10.11591/ijeecs.v3.i1.pp49-58.

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<p>This paper presents the performance evaluation of Doubly-Fed Induction Generator Using Combined Vector Control and Direct Power Control Method. Combined vector and direct power control (CVDPC) is used for the rotor side converter (RSC) of double-fed induction generators (DFIGs). The control system is according a direct current control by selecting suitable voltage vectors from a switching table. Actually, the proposed CVDPC encompass the benefits of vector control (VC) and direct power control (DPC) in a compact control system. Its benefits compare with VC contains rapid dynamic respo

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25

Arévalo, Paul, Danny Ochoa-Correa, and Edisson Villa-Ávila. "Towards Energy Efficiency: Innovations in High-Frequency Converters for Renewable Energy Systems and Electric Vehicles." Vehicles 7, no. 1 (2024): 1. https://doi.org/10.3390/vehicles7010001.

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This study reviews advancements in high-frequency converters for renewable energy systems and electric vehicles, emphasizing their role in enhancing energy efficiency and sustainability. Using the PRISMA 2020 methodology, 73 high-quality studies from 2014 to 2024 were synthesized to evaluate innovative designs, advanced materials, control strategies, and future opportunities. Key findings reveal significant progress in converter topologies, such as dual active bridge and LLC resonant designs, which enhance efficiency and scalability through soft-switching. Wide-bandgap semiconductors, includin

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26

Hernández-Guzmán, Victor Manuel, Ramón Silva-Ortigoza, and Magdalena Marciano-Melchor. "Position Control of a Maglev System Fed by a DC/DC Buck Power Electronic Converter." Complexity 2020 (May 31, 2020): 1–16. http://dx.doi.org/10.1155/2020/8236060.

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In this paper, we solve the problem of position regulation in a magnetic levitation system that is fed by a DC/DC Buck power electronic converter as a power amplifier. We present a formal asymptotic stability proof. Although this result is local, the merit of our proposal relies on the fact that this is the first time that such a control problem is solved for a magnetic levitation system, a nonlinear electromechanical plant. In this respect, we stress that most works in the literature on control of electromechanical systems actuated by power electronic converters are devoted to control brushed

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27

Mohammed, A. A. "Performance of Control Dynamics of Wind Turbine Based on Doubly Fed Induction Generator under Different Modes of Speed Operation." Conference Papers in Engineering 2013 (August 1, 2013): 1–9. http://dx.doi.org/10.1155/2013/125801.

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Abstract (sommario):

There are many solar power and wind stations installed in the power system for environmental and economic reasons. In fact, wind energy is inexpensive and the safest among all sources of renewable energy, it has been recognized that variable speed wind turbine based on the doubly fed induction generator is the most effective with less cost and high power yield. Therefore, this paper has chosen doubly fed induction generator for a comprehensive study of modeling, analyzing, and control. DFIG in wind turbine has to operate below and above the synchronous speed, which requires smooth transition m

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28

Wang, Yanping, Xiaogang Sun, Jianting Zhao, et al. "Differential Sampling of AC Waveforms Based on a Commercial Digital-to-Analog Converter for Reference." Sensors 24, no. 7 (2024): 2228. http://dx.doi.org/10.3390/s24072228.

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This paper introduces an innovative differential sampling technique for calibrating AC waveforms, leveraging a commercially available 16-bit digital-to-analog converter (DAC) as the reference standard. The novelty of this approach lies in its enhanced stability over traditional direct sampling methods, especially as the frequency of the AC waveform increases. Notably, this technique provides a cost-effective sampler alternative to the differential sampling methods that rely on a programmable Josephson voltage standard (PJVS). A critical aspect of this methodology is the precise measurement of

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29

Saadi, Ramzi, Mohamed Yacine Hammoudi, Okba Salah, Khaled Laadjal, and Antonio J. Marques Cardoso. "A Two-Degree-of-Freedom PID Integral Super-Twisting Controller Based on Atom Search Optimizer Applied to DC-DC Interleaved Converters for Fuel Cell Applications." Electronics 12, no. 19 (2023): 4113. http://dx.doi.org/10.3390/electronics12194113.

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This paper focuses on the real-time implementation of an optimal high-performance control applied to an interleaved nonisolated DC/DC converter designed for fuel cell applications. Three-phase interleaved boost converters are utilized to minimize input current undulation, increase efficiency, and provide a high output voltage in order to ensure the performance of the FC stack. The proposed control strategy contains an outer loop that generates the reference current based on a two-degree-of-freedom PID controller. This controller provides a robust setpoint tracking and disturbance rejection, wh

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30

Liu, Weiming, Tingting Zheng, Ziwen Liu, et al. "Active and Reactive Power Compensation Control Strategy for VSC-HVDC Systems under Unbalanced Grid Conditions." Energies 11, no. 11 (2018): 3140. http://dx.doi.org/10.3390/en11113140.

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This paper presents a power compensation strategy to suppress the double frequency power ripples of Voltage source converter high-voltage direct current (VSC-HVDC) systems under unbalanced grid voltage conditions. The mathematical control equations of the double frequency ripple power of VSC under unbalanced operating conditions are firstly derived and established, where the dynamic behaviors of the double frequency ripples in active and reactive power are regarded as being driven by current-relevant components and voltage-relevant components, respectively. Based on the equations, a power comp

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31

Zhou, Sihan, Liang Qin, Yong Yang, et al. "A Novel Ensemble Fault Diagnosis Model for Main Circulation Pumps of Converter Valves in VSC-HVDC Transmission Systems." Sensors 23, no. 11 (2023): 5082. http://dx.doi.org/10.3390/s23115082.

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The intelligent fault diagnosis of main circulation pumps is crucial for ensuring their safe and stable operation. However, limited research has been conducted on this topic, and applying existing fault diagnosis methods designed for other equipment may not yield optimal results when directly used for main circulation pump fault diagnosis. To address this issue, we propose a novel ensemble fault diagnosis model for the main circulation pumps of converter valves in voltage source converter-based high voltage direct current transmission (VSG-HVDC) systems. The proposed model employs a set of bas

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32

Agrawal, Amit, Ashish Shrivastava, and Kartick C. Jana. "A Universal Input, Single-Stage AC–DC LED Driver for an Auditorium Light." Journal of Circuits, Systems and Computers 28, no. 02 (2018): 1950024. http://dx.doi.org/10.1142/s0218126619500245.

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Analysis, design and simulation of 126[Formula: see text]W power supply with better power quality are presented in the proposed work to run an auditorium light emitting diode (LED) light operating at universal AC input mains (90–270[Formula: see text]V). A single-ended primary inductance converter (SEPIC) topology is designed and driven in continuous conduction mode (CCM) with advance feedback system to maintain constant voltage at output. A proportional integral (PI) controller is also proposed to make the system stable, and stability analysis is discussed in detail with the help of transfer

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Janney, J., D. Lyngh, and E. B. Iverson. "Design of the cryogenic moderator system for the second target station." IOP Conference Series: Materials Science and Engineering 1301, no. 1 (2024): 012076. http://dx.doi.org/10.1088/1757-899x/1301/1/012076.

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Abstract The Second Target Station (STS) at Oak Ridge National Laboratory will be a 700 kW pulsed spallation neutron source designed to provide the world’s highest brightness cold neutron beams. In order to produce the required neutron performance, two compact liquid hydrogen moderators are located adjacent to the tungsten spallation target and must be supplied with less than 20 K hydrogen and a para hydrogen fraction of 99.8% or greater. The Cryogenic Moderator System (CMS) will consist of a single hydrogen loop feeding the two moderators in series cooled by a helium refrigerator with a cooli

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Han, Bang Cheng, Dan He, Fang Zheng Guo, Yu Wang, and Bing Nan Huang. "The FPGA-Based Phase-Locked Loop Speed Control System of BLDCM for Magnetically Suspended Control Moment Gyroscope." Applied Mechanics and Materials 80-81 (July 2011): 1249–57. http://dx.doi.org/10.4028/www.scientific.net/amm.80-81.1249.

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A phase-locked loop (PLL) control system based on field programmable gates array (FPGA) is proposed through analyzing the model of three-phase unipolar-driven BLDCM (brushless direct current motor) to enhance the reliability and accurate steady-state speed for magnetically suspended control moment gyroscope (MSCMG). The numerical operation module, PLL module and current-loop control module are designed based on FPGA using very-high-speed integrated circuit hardware description language (VHDL) to realize the control law of the digital system. The pulse width modulation (PWM) generating module f

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Ramadoni Syahputra, Imam Robandi, and Mochamad Ashari. "Model DFIG Pembangkit Listrik Tenaga Angin Sebagai Suatu Unit Pembangkit Tersebar." Jurnal Intake : Jurnal Penelitian Ilmu Teknik dan Terapan 8, no. 2 (2017): 55–60. http://dx.doi.org/10.48056/jintake.v8i2.25.

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In this paper, we present the doubly-fed induction generator (DFIG) model in a wind turbine system as a unit of the distributed generator. The wind turbine driven by doubly-fed induction machine is a part of the distributed generation which feeds ac power to the distribution network. The system is modeled and simulated in the Matlab Simulink environment in such a way that it can be suited for modeling of all types of induction generator configurations. The model makes use of rotor reference frame using a dynamic vector approach for machine model. The fuzzy logic controller is applied to the ro

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Syahputra, Ramadoni, Imam Robandi, and Mochamad Ashari. "Model DFIG Pembangkit Listrik Tenaga Angin Sebagai Suatu Unit Pembangkit Tersebar." Jurnal Intake : Jurnal Penelitian Ilmu Teknik dan Terapan 8, no. 2 (2017): 55–60. http://dx.doi.org/10.32492/jintake.v8i2.691.

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Abstract (sommario):

In this paper, we present the doubly-fed induction generator (DFIG) model in a wind turbine system as a unit of the distributed generator. The wind turbine driven by doubly-fed induction machine is a part of the distributed generation which feeds ac power to the distribution network. The system is modeled and simulated in the Matlab Simulink environment in such a way that it can be suited for modeling of all types of induction generator configurations. The model makes use of rotor reference frame using a dynamic vector approach for machine model. The fuzzy logic controller is applied to the ro

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Xu, Kai, Youguang Guo, Gang Lei, and Jianguo Zhu. "A Review of Flywheel Energy Storage System Technologies." Energies 16, no. 18 (2023): 6462. http://dx.doi.org/10.3390/en16186462.

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The operation of the electricity network has grown more complex due to the increased adoption of renewable energy resources, such as wind and solar power. Using energy storage technology can improve the stability and quality of the power grid. One such technology is flywheel energy storage systems (FESSs). Compared with other energy storage systems, FESSs offer numerous advantages, including a long lifespan, exceptional efficiency, high power density, and minimal environmental impact. This article comprehensively reviews the key components of FESSs, including flywheel rotors, motor types, bear

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38

Ferdous, Fouzia, and A. B. M. Harun Ur Rashid. "Design of a high performance AC-DC LED driver based on SEPIC topology." International Journal of Power Electronics and Drive Systems (IJPEDS) 12, no. 2 (2021): 870. http://dx.doi.org/10.11591/ijpeds.v12.i2.pp870-885.

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Light emitting diodes (LEDs) are current driven devices. So, it is essential to maintain the stability of LED voltage and current. Variation of temperature may cause of instabilities and bifurcations in the LED driver. Driving LEDs from an offline power source faces design challenges like it have to maintain low harmonics in input current, to achieve high power factor, high efficiency and to maintain constant LED current and to ensure long lifetime. This paper proposes the technique of harmonics reduction by using parametric optimization of Single ended primary inductor converter (SEPIC) based

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39

Tan, Qiang, Cuimei Bo, Jun Li, Yiqing Wang, Xiaorong Wang, and Shubo Jiang. "Glucose Analyzer Based on Self-made Biosensor for High-performance Glucose Detection." MATEC Web of Conferences 327 (2020): 01003. http://dx.doi.org/10.1051/matecconf/202032701003.

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The concentration analyzer with high precision and wide range is the core device for monitoring the fermentation process. In this work, we designed and proposed a lowcost three-electrode glucose analyzer based on a self-made screen-printed enzyme biosensor chip, which has a Prussian blue (PB) nanocubic structure and leads to high sensitivity of 117.31 μAmM-1cm-2. The hardware design of the glucose analyzer can be divided into five critical parts, including digital, signal treatment system, power supply, motor-driven and the host computer. The signal treatment system is used to collect, convert

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40

Ghidewon-Abay, Sengal, and Ali Mehrizi-Sani. "Control of a Three-Phase Grid-Connected Voltage-Sourced Converter Using Long Short-Term Memory Networks." Energies 16, no. 1 (2022): 453. http://dx.doi.org/10.3390/en16010453.

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Abstract (sommario):

With the rise of inverter-based resources (IBRs) within the power system, the control of grid-connected converters (GCCs) has become pertinent due to the fact they interface IBRs to the grid. The conventional method of control for a GCC such as the voltage-sourced converter (VSC) is through a decoupled control loop in the synchronous reference frame. However, this model-based control method is sensitive to parameter changes causing deterioration in controller performance. Data-driven approaches such as machine learning can be utilized to design controllers that are capable of operating GCCs in

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41

Peter, Geno, Albert Alexander Stonier, Dishore Shunmugham Vanaja, Fitrahsya Justin, Ramya Kuppusamy, and Yuvaraja Teekaraman. "Battery Cell Balancing of V2G-Equipped Microgrid in the Presence of Energy Storage Aggregator." International Transactions on Electrical Energy Systems 2023 (November 9, 2023): 1–18. http://dx.doi.org/10.1155/2023/7990690.

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Abstract (sommario):

High electricity consumption in Sarawak’s cities is a concern, driven by residential, industrial, and commercial users. Greater demand for electrical energy requires more electrical resources, affecting grid stability. To prevent blackouts and enhance grid resilience, electric vehicles can serve as distributed energy storage in microgrids. The biggest problem facing energy storage is that not all batteries within energy storage are the same. Every battery cell in the battery pack has a different rate of self-discharge, capacity, internal resistance, and aging, even though they have the same ch

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42

Mendoza-Becker, Rodrigo, Juan Carlos Travieso-Torres, and Matías Díaz. "Adaptive Control of M3C-Based Variable Speed Drive for Multiple Permanent-Magnet-Synchronous-Motor-Driven Centrifugal Pumps." Machines 11, no. 9 (2023): 884. http://dx.doi.org/10.3390/machines11090884.

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Abstract (sommario):

There has been growing interest in using permanent magnet synchronous motors (PMSMs) for pumping applications to improve energy efficiency. One promising approach for powering these motors in variable speed applications is using an M3C due to its inherent fault tolerance capability. However, M3C converters require a more complex control system than simpler converters. For instance, a basic M3C control system for power transmission requires seventeen PI controllers, whose fixed adjustment depends on the M3C’s dynamical model parameters’ value knowledge, needing initial extensive and time-consum

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43

Katkout, Abdiddaim, Tamou Nasser, and Ahmed Essadki. "Novel Predictive Control for the IPMSM Fed by the 3L-SNPC Inverter for EVAs: Modified Lyapunov Function, Computational Efficiency, and Delay Compensation." Mathematical Problems in Engineering 2020 (August 27, 2020): 1–17. http://dx.doi.org/10.1155/2020/2515107.

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Abstract (sommario):

This paper proposes a novel predictive strategy based on a model predictive control (MPC) for the interior permanent magnet synchronous motors (IPMSMs) driven by a three-level simplified neutral-point clamped inverter (3L-SNPC) for electric vehicle applications (EVAs). Based on the prediction of the future behavior of the controlled variables, a predefined multiobjective cost function incorporates the control objectives which are evaluated for every sampling period to generate the optimal switching state applied directly to the inverter without the modulation stage. The control objectives in t

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44

VOZNIAK, Oleksandr, Serhii TIKHONENKO, Volodymyr TYKHONOV, and Artem KOSAKOVSKYI. "OPTIMIZATION OF A DIGITAL CURRENT CONTROL SYSTEM FOR AN ELECTRIC DRIVE WITH A THYRISTOR CONVERTER." ENGINEERING, ENERGY, TRANSPORT AIC, no. 3 (126) (December 24, 2024): 86–92. https://doi.org/10.37128/2520-6168-2024-3-10.

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Abstract (sommario):

The article is dedicated to optimizing the digital current control loop of a thyristor converter-driven electric drive, essential for ensuring stable, precise, and reliable operation of electric drives in automated and industrial systems. The primary goal of this research is to develop and enhance the digital current regulator (DCR), which enables the drive system to achieve desired performance, including rapid and stable response to current changes without excessive overshoot or oscillations. Optimization of the current loop improves energy efficiency, enhances dynamic properties, and increas

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45

Ndlela, Nomihla Wandile, and Innocent Ewean Davidson. "Network Coordination between High-Voltage DC and High-Voltage AC Transmission Systems Using Flexible AC Transmission System Controllers." Energies 15, no. 19 (2022): 7402. http://dx.doi.org/10.3390/en15197402.

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Abstract (sommario):

The strategic intent of the African Union is to develop a “Smart Integrated African Electric Power Super Grid” driven by modern tools and advances in high-voltage direct current (HVDC) engineering and flexible alternating current technology systems (FACTS), which is central in supporting Africa’s sustained economic growth and development. The southern African region, including South Africa, is beset by the critical challenges of perennial load-shedding, which impedes economic growth and aggravates unemployment. This has led to the insecurity of electricity supplies and degraded the quality of

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46

Al-Saloli, Abdullah Abdurrahman, and Faris E. Alfaris. "Current Compensation for Faulted Grid-Connected PV Arrays Using a Modified Voltage-Fed Quasi-Z-Source Inverter." Electronics 13, no. 21 (2024): 4312. http://dx.doi.org/10.3390/electronics13214312.

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Abstract (sommario):

Large-scale photovoltaic (PV) systems are being widely deployed to meet global environmental goals and renewable energy targets. Advances in PV technology have driven investment in the electric sector. However, as the size of PV arrays grows, more obstacles and challenges emerge. The primary obstacles are the occurrence of direct current (DC) faults and shading in a large array of PV panels, where any malfunction in a single panel can have a detrimental impact on the overall output power of the entire series-connected PV string and therefore the PV array. Due to the abrupt and frequent fluctua

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47

Yu, Wenwei, Daisuke Nishikawa, Yasuhiro Ishikawa, Hiroshi Yokoi, and Yukinori Kakazu. "Multifunctional Electrical Prosthetic Hand -Development of Tendon-driven Mechanism and Controller." Journal of Robotics and Mechatronics 14, no. 6 (2002): 557–64. http://dx.doi.org/10.20965/jrm.2002.p0557.

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Abstract (sommario):

The purpose of this research was to develop a tendondriven electrical prosthetic hand, which is characterized by its mechanical torque-velocity converter and a mechanism that can assist proximal joint torque by distal actuators. To cope with time-delay and nonlinear properties of the prosthetic hand, a controller based on a Jordan network, recurrent neural network models, is proposed. The results of experiments on the stability of the controller are confirmed when tracking static wire tensions. Finally, the next prototype of prosthetic hand based on these methods is introduced.

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48

Rajesh, V., Dr D. Srinivas, P. Srinivasa Rao, and Ganji Swathi. "ENHANCING POWER QUALITY IN DC SYSTEMS WITH UPFC-BASED MULTILEVEL CASCADE CONVERTER." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 10, no. 2 (2019): 1968–73. http://dx.doi.org/10.61841/turcomat.v10i2.14567.

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Abstract (sommario):

Mixture Although renewable energy is a good substitute for conventional energy, connecting it to the grid can provide new difficulties. Similarly, for wind turbines to keep the grid stable and reliable, they need to provide high-quality electricity. To reduce the harmful environmental effects of conventional energy generation, more wind turbines are being connected to the electrical grid. Understanding how disturbances impact the quality of the energy is important in order to connect a wind turbine to the grid. The voltage and frequency must be as stable as feasible. This stability may be obta

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49

Reddy, M. Madhusudhan, V. Nirmala Devi, and A. Rajababu. "UPFC Based Multilevel Cascade Converter for Power Quality Improvement in Dc System." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 11, no. 3 (2020): 2643–48. http://dx.doi.org/10.61841/turcomat.v11i3.14440.

Testo completo

Abstract (sommario):

Mixture Although renewable energy is a good substitute for conventional energy, connecting it to the grid can provide new difficulties. Similarly, for wind turbines to keep the grid stable and reliable, they need to produce high-quality power. To reduce the harmful environmental effects of conventional energy generation, more wind turbines are being connected to the electrical grid. Understanding how disturbances affect the quality of the energy is important in order to connect a wind turbine to the grid. The voltage and frequency must be as stable as feasible. This stability can be obtained w

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50

Aghmadi, Ahmed, Ola Ali, S. M. Sajjad Hossain Rafin, Rawan A. Taha, Ahmed M. Ibrahim, and Osama A. Mohammed. "Hardware Implementation of Hybrid Data Driven-PI Control Scheme for Resilient Operation of Standalone DC Microgrid." Batteries 10, no. 9 (2024): 297. http://dx.doi.org/10.3390/batteries10090297.

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Abstract (sommario):

The control of energy storage systems (ESSs) within autonomous microgrids (MGs) is critical for ensuring stable and efficient operation, especially when incorporating renewable energy resources (RESs) such as photovoltaic (PV) systems. This paper addresses managing a standalone DC microgrid that combines PV generation and a battery energy storage system (BESS). We propose a hybrid control strategy that combines a Recurrent Neural Network (RNN) with Proportional-Integral (PI) controllers to improve the performance of the bidirectional converter that connects the BESS to the microgrid. The RNN p

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