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Journal articles on the topic 'Conventional Voltage Regulators'

Author: Grafiati

Published: 6 September 2023

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1

Akkouchi, K., L. Rahmani, and R. Lebied. "New application of artificial neural network-based direct power control for permanent magnet synchronous generator." Electrical Engineering & Electromechanics, no. 6 (December 3, 2021): 18–24. http://dx.doi.org/10.20998/2074-272x.2021.6.03.

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Purpose. This article proposes a new strategy for Direct Power Control (DPC) based on the use of Artificial Neural Networks (ANN-DPC). The proposed ANN-DPC scheme is based on the replacement of PI and hysteresis regulators by neural regulators. Simulation results for a 1 kW system are provided to demonstrate the efficiency and robustness of the proposed control strategy during variations in active and reactive power and in DC bus voltage. Methodology. Our strategy is based on direct control of instant active and reactive powers. The voltage regulator and hysteresis are replaced by more efficie

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de Negreiros, Gustavo Fernandes, Fábio Xavier Lobo, Igor Cavalcante Torres, and Chigueru Tiba. "Impact on Voltage Regulation in Medium Voltage Distribution Networks Due to the Insertion of Photovoltaic Generators." Energies 16, no. 3 (2023): 1307. http://dx.doi.org/10.3390/en16031307.

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The objective of this paper was to analyze the impacts caused by the operation of voltage regulators in electrical distribution networks and to evidence the number of operations in the face of short-duration voltage variation caused by the high intermittency of the connected PV generators. A real LV and MV feeder was used, modeled in OpenDSS software, based on normative standards, adjustments, and technical maneuvers strategically used by the local utility. The analyses considered the temporal variations for the photovoltaic generators and different load demand profiles connected to the feeder

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3

Ameziane, Hatim, Kamal Zared, Hicham Akhamal, and Hassan Qjidaa. "Full On-chip low dropout voltage regulator with an enhanced transient response for low power systems." International Journal of Electrical and Computer Engineering (IJECE) 9, no. 6 (2019): 4637. http://dx.doi.org/10.11591/ijece.v9i6.pp4637-4648.

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<span>A full on chip low Dropout Voltage Regulator (LDO) with fast transient response and small capacitor compensation circuit is proposed. The novel technique is implemented to detect the variation voltage at the output of LDO and enable the proposed fast detector amplifier (FDA) to improve load transient response of 50mA load step. The large external capacitor used in Conventional LDO Regulators is removed allowing for greater power system integration for system-on-chip (SoC) applications. The 1.6-V Full On-Chip LDO voltage regulator with a power supply of 1.8 V was designed and simula

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Ali Azam Khan, Md, and Mohammad Ali Choudhury. "Efficient Voltage Regulation with Modified Hybrid SEPIC DC-DC-Converter." MATEC Web of Conferences 160 (2018): 02004. http://dx.doi.org/10.1051/matecconf/201816002004.

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Switch mode dc-dc converters are attractive for their small size, ease of control and efficient power conversion. Output voltage is regulated by duty cycle control of semiconductor switch of switch mode dc-dc converters. The voltage gain and efficiency of practical switching regulators deviate from ideal values at extreme duty cycles. Also, desired gain /attenuation is not achievable at high/low duty cycles. In applications where high gain or high attenuation of voltage is desired with acceptable energy conversion efficiency, hybrid dc-dc switching converters are used. Hybrid dc-dc converters

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Bulatov, Yuri, Andrey Kryukov, and Konstantin Suslov. "Using Group Predictive Voltage and Frequency Regulators of Distributed Generation Plants in Cyber-Physical Power Supply Systems." Energies 15, no. 4 (2022): 1253. http://dx.doi.org/10.3390/en15041253.

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The widespread use of distributed generation (DG) plants in cyber-physical power supply systems (CPPSS) requires solving the complex problem of setting their regulators. The presented study aimed to determine the performance of the group predictive voltage and frequency regulators of DG plants in CPPSS. These studies were conducted in the MatLab environment on the CPPSS models with gas turbine units and with a small-scale hydroelectric power plant. The proposed method for tuning group predictive regulators makes it possible to improve the quality control indices. The research has established t

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Mayouf, Messaoud. "Control strategy of a standalone variable speed wind energy conversion system based on direct drive permanent magnet synchronous generator." Journal of Renewable Energy and Technology 1, no. 1 (2022): 1–8. http://dx.doi.org/10.38208/jret.v1i1.378.

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In this paper, we propose a control strategy for a stand-alone wind energy conversion system (WECS) based on a direct drive permanent magnet synchronous generator (PMSG), loaded on a DC-type charge. In the considered wind-power generating system, the generator provides a DC voltage to the load through a three-phase rectifier, controlled by the Pulse Width Modulation (PWM) technique. The main control strategy target is to maintain the DC voltage insensitive to fast changes in wind speed and load, by offsetting the generator output current with the charge current. The approach adopted in this pa

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7

Ghazzali, Mohamed, Mohamed Haloua, and Fouad Giri. "Fixed-time control of voltage dynamics of three-phase voltage source inverters with LC output filter." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 3 (2022): 1843. http://dx.doi.org/10.11591/ijpeds.v13.i3.pp1843-1853.

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<p>This paper puts forward a fixed-time cascade voltage control system for threephase voltage source inverters (VSIs) with LC output filter.First, a feedforward decoupling mechanism is used to elminate the dependency between the d-q parts of the control system. Then, proportional-integral (PI) regulators are used for current control in the inner loop. The current reference is provided by a novel VSI control technique developed for fixed-time voltage regulation and reference tracking. The approach suggested in this work tracks and maintains the voltage magnitude at its normalized value in

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Djebbar, Mohamed Salah, Aziz Boukadoum, and Abla Bouguerne. "Performances of a wind power system based on the doubly fed induction generator controlled by a multi-level inverter." International Journal of Power Electronics and Drive Systems (IJPEDS) 14, no. 1 (2023): 100. http://dx.doi.org/10.11591/ijpeds.v14.i1.pp100-110.

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The objective of this work is to study the contribution that the use of the multi-level inverter can make compared to a conventional two-level inverter, in a wind power production line (WPG) associated with a doubly fed induction generator (DFIG). The DFIG is driven by a variable speed wind turbine and operates in maximum power point tracking (MPPT) mode, for optimum efficiency. The rotor of the DFIG is supplied by a DC/AC inverter with five levels with MPC structure, controlled by the PWM technique, while the stator is connected with the network. The active and reactive powers exchanged betwe

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Xu, Aoqi, Yassine Bouteraa, Nasreen Kausar, Ardashir Mohammadzadeh, Dragan Pamucar, and Mohammed Abdullah Salman. "A Fuzzy Intelligent Computing Approach for Energy/Voltage Control of Microgrids." Journal of Mathematics 2023 (April 17, 2023): 1–11. http://dx.doi.org/10.1155/2023/5289114.

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The control and energy management problems of microgrids (MGs) are challenging due to the high level of uncertainties and disturbances such as changes in demands, mechanical powers, and solar energies. So, intelligent computing is needed to be developed for these systems. This paper uses an optimal and robust fuzzy controller for automatic voltage and frequency regulation. The fuzzy logic develops the resistance against uncertainties and disturbances such as irradiation, wind power changes, and load demand variation. The introduced controller uses appropriate and effective criteria that includ

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Abegaz, Brook W., and Sina Zarrabian. "Modified Q-Learning Method for Automatic Voltage Regulation in Wide-Area Multigeneration Systems." International Transactions on Electrical Energy Systems 2022 (June 10, 2022): 1–13. http://dx.doi.org/10.1155/2022/3047761.

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The state-estimation and optimal control of multigeneration systems are challenging for wide-area systems having numerous distributed automatic voltage regulators (AVR). This paper proposes a modified Q-learning method and algorithm that aim to improve the convergence of the approach and enhance the dynamic response and stability of the terminal voltage of multiple generators in the experimental Western System Coordinating Council (WSCC) and large-scale IEEE 39-bus test systems. The large-scale experimental testbed consists of a six-area, 39-bus system having ten generators that are connected

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Go, Seok-Il, Sang-Yun Yun, Seon-Ju Ahn, Hyun-Woo Kim, and Joon-Ho Choi. "Heuristic Coordinated Voltage Control Schemes in Distribution Network with Distributed Generations." Energies 13, no. 11 (2020): 2849. http://dx.doi.org/10.3390/en13112849.

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The voltage and reactive power control (Volt/VAR Control, VVC) in distribution networks has become a challenging issue with the increasing utilization of distributed generations (DGs). In this paper, a heuristic-based coordinated voltage control scheme that considers distribution voltage control devices, i.e., on-load tap changers (OLTC) and step voltage regulators (SVR), as well as reactive power control devices, i.e., DGs, are proposed. Conventional voltage control methods using non-linear node voltage equations require complex computation. In this paper, the formulation of simplified node v

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Boudechiche, Ghania, Mustapha Sarra, Oualid Aissa, Jean-Paul Gaubert, Boualam Benlahbib, and Abderezak Lashab. "Anti-Windup FOPID-Based DPC for SAPF Interconnected to a PV System Tuned Using PSO Algorithm." European Journal of Electrical Engineering 22, no. 4-5 (2020): 313–24. http://dx.doi.org/10.18280/ejee.224-503.

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This paper deals with a shunt active power filter (SAPF) integrated in a photovoltaic (PV) system, which is interfaced to the grid via a double-stage configuration, for simultaneously improving the power quality in the existence of non-linear loads and injecting the PV harvested power to the power grid. The direct power control (DPC) based on the conventional Proportional-integral (PI) suffers from some shortcomings in the transient state, such as large overshoots and undershoots in the voltage. Long response time is another disadvantage when using such a controller. To overcome this situation

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Zhang, Jun Li. "STATCOM Based on Cascade Multilevel Inverter." Applied Mechanics and Materials 55-57 (May 2011): 1365–69. http://dx.doi.org/10.4028/www.scientific.net/amm.55-57.1365.

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Static Synchronous Compensator (STATCOM) using the voltage source inverter (VSI) has been widely accepted as the current generation of the reactive power regulators of power system, improving the network steady-state and dynamic performances, regulates power factor, reduces losses and allows higher power flows in the exist line, assists in the post-fault recovery of transmission system. The cascade inverter not only can eliminate the bulky transformers compared with the conventional STATCOM, but also employ a sinusoid pulse width modular scheme: phase-shift. The use of the feedback linearizati

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Guesmi, Tawfik, Badr M. Alshammari, Yosra Welhazi, Hsan Hadj Abdallah, and Ahmed Toumi. "Robust Fuzzy Control for Uncertain Nonlinear Power Systems." Mathematics 10, no. 9 (2022): 1463. http://dx.doi.org/10.3390/math10091463.

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This paper presents a new control technique based on uncertain fuzzy models for handling uncertainties in nonlinear dynamic systems. This approach is applied for the stabilization of a multimachine power system subject to disturbances. In this case, a state-feedback controller based on parallel distributed compensation (PDC) is applied for the stabilization of the fuzzy system, where the design of control laws is based on the Lyapunov function method and the stability conditions are solved using a linear matrix inequalities (LMI)-based framework. Due to the high number of system nonlinearities

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15

Dev Prakash Chourasia and Bhoopendra Singh. "Hybrid Electric Vehicle with Solar Integration using Bi directional DC-DC converter with Fuzzy Logic Control." International Journal for Modern Trends in Science and Technology, no. 02 (February 12, 2021): 1–8. http://dx.doi.org/10.46501/ijmtst0702001.

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In this paper, a sunlight-based hybrid electric vehicle is planned on MATLAB Simulink. In this a primary fuel source which sun based and a helper source which is battery is utilized to fabricate a bidirectional DC-DC converter. In General thought, an electric vehicle uses a battery that is charged from an external force gracefully, anyway sunlight-based PV modules are used to charge a battery by strategies for fascinating radiation from the sun and changing over it into electrical force (Photovoltaic Effect) by proposed procedure. The electrical capacity to batteries got from sun powered PV mo

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16

Mikhalchuk, Nikolay. "PERSPECTIVE DIRECTIONS FOR THE IMPROVEMENT OF ENERGYOPTIMAL PARAMETERS AND TRACTION PROPERTIES OF THE LOCOMOTIVE." Bulletin of scientific research results, no. 4 (December 17, 2017): 161–73. http://dx.doi.org/10.20295/2223-9987-2017-4-161-173.

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Objective: To develop and justify energy-efficient and energy-saving control technology of traction electric drive with maximum realization of traction properties. Methods: Mathematical modeling, experimental manufacturing of prototypes of the converters and control system. Results: Theoretical justification was presented, based on refinement of the theory of energy processes in electrical circuits with solid state power controllers. It was proposed to apply electrical resistance of elements in electric power systems as a power control parameter instead of the conventional voltage. It was reve

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Opeiko, O. F. "Reference Input Signals Formation for Induction Motor Control in Traction Drive." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 66, no. 3 (2023): 205–14. http://dx.doi.org/10.21122/1029-7448-2023-66-3-205-214.

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The purpose of this work is to build the analytical improved (with resistances estimation) real time computation of the reference inputs for rotor flux and torque in the vector control system of an induction motor of a traction electric drive. The reference inputs must maximize electromagnetic torque in conditions of voltage source instability, particularly in magnetic field weakening mode. The conventional way to control the field weakening mode is to form flux coupling task inversely proportional to the speed or inversely proportional to the square of the speed in second and third zones resp

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Reddy, R. Obulakonda, Sandeep Kautish, V. Padmanabha Reddy, N. Sudhakar Yadav, Meznah M. Alanazi, and Ali Wagdy Mohamed. "Effects of Integrated Fuzzy Logic PID Controller on Satellite Antenna Tracking System." Computational Intelligence and Neuroscience 2022 (March 7, 2022): 1–11. http://dx.doi.org/10.1155/2022/7417298.

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An electrical device that transforms the electricity into the waves of radio and vice versa is termed the antenna. Its main deployment is in the transmitter and receiver of the antenna. While transmission, the transmitter of radio at the extremities of the antenna furnishes the electricity which oscillates at the frequency of radio wave and energy is released as current as em waves. Some of the voltage is formed from the em wave that is invaded at the point of receiving to amplify the receiver. This study focuses on the analysis of the satellite system to aid in mobile antenna tracking. It als

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Malysz, John, Serge A. Y. Afeli, Aaron Provence, and Georgi V. Petkov. "Ethanol-mediated relaxation of guinea pig urinary bladder smooth muscle: involvement of BK and L-type Ca2+ channels." American Journal of Physiology-Cell Physiology 306, no. 1 (2014): C45—C58. http://dx.doi.org/10.1152/ajpcell.00047.2013.

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Mechanisms underlying ethanol (EtOH)-induced detrusor smooth muscle (DSM) relaxation and increased urinary bladder capacity remain unknown. We investigated whether the large conductance Ca2+-activated K+ (BK) channels or L-type voltage-dependent Ca2+ channels (VDCCs), major regulators of DSM excitability and contractility, are targets for EtOH by patch-clamp electrophysiology (conventional and perforated whole cell and excised patch single channel) and isometric tension recordings using guinea pig DSM cells and isolated tissue strips, respectively. EtOH at 0.3% vol/vol (∼50 mM) enhanced whole

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Alelaj, Fajer, Mohamed Dahidah, and Haris Patsios. "Mitigating Electrical Disturbances with Hybrid Distribution Transformer." Electrical Engineering : An International Journal 10, no. 1 (2023): 1–15. http://dx.doi.org/10.5121/eeij.2023.10101.

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Hybrid transformers (HT) have the advantages of the conventional transformer, the regulatory abilities of power electronic converters, and reduce the impact of the grid. The impacts of the existing grid are voltage sag, voltage swell, harmonic distortion, and voltage unbalanced. The power electronic converter has a controllable advantage such as regulating the voltage and can transfer only a fraction of the power. The aim of the paper is to augment the conventional power distribution transformer with a partially rated power electronic module to enhance flexibility and introduce new features to

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Anantwar, Harsha, Shanmukha Sundar, and B. R. Laksmikantha. "Optimal controllers design for voltage control in Off-grid hybrid power system." International Journal of Electrical and Computer Engineering (IJECE) 9, no. 6 (2019): 4586. http://dx.doi.org/10.11591/ijece.v9i6.pp4586-4597.

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<p>Generally, for remote places extension of grid is uneconomical and difficult. Off-grid hybrid power systems (OGHPS) has renewable energy sources integrated with conventional sources. OGHPS is very significant as it is the only source of electric supply for remote areas. OGHPS under study has Induction generator (IG) for wind power generation, Photo-Voltaic source with inverter, Synchronous generator (SG) for Diesel Engine (DE) and load. Over-rated PV-inverter has capacity to supply reactive power. SG of DE has Automatic voltage regulator for excitation control to regulate terminal vol

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Mrazova, Katerina, Jaromir Bacovsky, Zuzana Sedrlova, et al. "UranyLess Low Voltage Transmission Electron Microscopy: A Powerful Tool for Ultrastructural Studying of Cyanobacterial Cells." Microorganisms 11, no. 4 (2023): 888. http://dx.doi.org/10.3390/microorganisms11040888.

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Sample preparation protocols for conventional high voltage transmission electron microscopy (TEM) heavily rely on the usage of staining agents containing various heavy metals, most commonly uranyl acetate and lead citrate. However high toxicity, rising legal regulations, and problematic waste disposal of uranyl acetate have increased calls for the reduction or even complete replacement of this staining agent. One of the strategies for uranyless imaging is the employment of low-voltage transmission electron microscopy. To investigate the influence of different imaging and staining strategies on

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Ohanu, Chibuike Peter, Kenneth Chinonso Odo, Luke Uwakwe Omeje, and Tole Sutikno. "Output performance evaluation of the automatic voltage regulator system on pre-filter control technique." International Journal of Power Electronics and Drive Systems (IJPEDS) 14, no. 2 (2023): 789. http://dx.doi.org/10.11591/ijpeds.v14.i2.pp789-798.

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<p>Automatic voltage regulator (AVR) is used at each generating station or synchronous generators to maintain voltage supply at steady state or at a constant value otherwise the performance of the generator will be affected. The combination of AVR system with controllers clears fluctuation due to variation in load, speed, temperature, and power factor. This causes deviation in generator’s voltage and damage to power equipment. This work presents performance enhancement of AVR system using Proportional Integral and Derivative (PID) with pre-filter control technique. The enhanced performan

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Choe, Young-Joe, Hyohyun Nam, and Jung-Dong Park. "A Low-Dropout Regulator with PSRR Enhancement through Feed-Forward Ripple Cancellation Technique in 65 nm CMOS Process." Electronics 9, no. 1 (2020): 146. http://dx.doi.org/10.3390/electronics9010146.

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In this paper, a low-dropout (LDO) regulator with an enhanced power supply rejection ratio (PSRR) is proposed with a feed-forward ripple cancellation technique (FFRC) in 65 nm CMOS technology. This technique significantly improves the PSRR over a wide range of frequencies, compared to a conventional LDO regulator. The LDO regulator provides 35–76.8 dB of PSRR in the range of 1 MHz–1 GHz, which shows up to 30 dB of PSRR improvement, compared with that of the conventional LDO regulator. The implemented LDO regulator has a dropout voltage of 0.22 V and a maximum load current of 20 mA. It can also

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Bo, Liang, Yu Ren Li, Lei Xu, and Jiu Li Lu. "Research on Voltage Regulator System of Aircraft Power Generation System." Advanced Materials Research 588-589 (November 2012): 552–57. http://dx.doi.org/10.4028/www.scientific.net/amr.588-589.552.

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The paper analyzed the composition of the aircraft synchronous generator system. The simulation model of the three-stage synchronous generator is established in the environmental of MATALB according to the motion equation of generator and coordinate transformation. Proposed a control algorithm based on the Sliding-mode Variable Structure Control (SVSC) theory after analyzed the conventional control algorithm of voltage regulator. Particularized the realized method of the SVSC algorithm is proposed. Simulation of both control algorithms were conducted under MATLAB. Simulation results indicated

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Wang, Songlin, Shuang Feng, Hui Wang, Yu Yao, Jinhua Mao, and Xinquan Lai. "A novel high accuracy bandgap reference voltage source." Circuit World 43, no. 4 (2017): 141–44. http://dx.doi.org/10.1108/cw-04-2017-0019.

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Purpose This paper aims to design a new bandgap reference circuit with complementary metal–oxide–semiconductor (CMOS) technology. Design/methodology/approach Different from the conventional bandgap reference circuit with operational amplifiers, this design directly connects the two bases of the transistors with both the ends of the resistor. The transistor acts as an amplifier to amplify the change of voltage, which is convenient for the feedback regulation of low dropout regulator (LDO) regulator circuit, at last to realize the temperature control. In addition, introducing the depletion-type

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Kilani, Dima, Baker Mohammad, and Mohammad Alhawari. "Switched Inductor DC–DC Boost Regulator Using Voltage-to-Time Controller for TEG Applications." Energies 15, no. 9 (2022): 3330. http://dx.doi.org/10.3390/en15093330.

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This paper presents a switched inductor (SI) DC–DC boost regulator designed for thermoelectric generator (TEG) applications. To boost and regulate the output voltage, two feedback loops are implemented which control the duty cycle of the SI clock. The first loop consists of a pulse skip modulation (PSM) controller that compares the load voltage and reference voltage. Based on the comparison output, the PSM will either pass or bypass the modulated pulse width signal generated from the second loop. The second loop replaces the conventional circuit design of the pulse width modulation (PWM) with

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Et. al., K. Muralidhar Goud,. "Stability analysis of Automatic Voltage Regulator using Fractional Order Controller." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 2 (2021): 780–87. http://dx.doi.org/10.17762/turcomat.v12i2.1084.

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We aim to design a fractional order robust control system. It is an advanced model of classic PID controller whose order will be non-integer.PID controller that we generally use has many advantages and disadvantages with respect to the disadvantages like, it doesn’t give accurate values of constants, exact values of the time domain parameters as well as frequency domain parameters of the control system and we have more robust problem. Wearable electronic based an automatic voltage regulator can automatically preservesthe terminal voltage of generator at a fixed value under varyingly load and o

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Yang, Ying, Jing Yuan, and Hu Zhang. "Regulator Design of Vector Control System." Advanced Materials Research 383-390 (November 2011): 7082–89. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.7082.

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A Decoupling method based on feedforward voltage compensation is adopted to eliminate completely the coupling between exciting current and torque current. Based on conventional design methods of single-variable linear system , the paper analyses and designs detailedly the flux loop, speed loop and current loop. A design method based on double closed-loop PI regulator for speed sensorless vector control system is proposed. Through experimental results, we demonstrate its good performance.

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Garfi, Oumaima, Helmi Aloui, and Nadia Chaker. "Impacts of photovoltaic power source intermittence on a distribution network." International Journal of Electrical and Computer Engineering (IJECE) 9, no. 6 (2019): 5134. http://dx.doi.org/10.11591/ijece.v9i6.pp5134-5142.

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<span lang="EN-US">The integration of the photovoltaic (PV) solar systems into distribution networks has brought new challenges to the network planners. One of the most interesting is to prevent the impacts of the PV intermittent character on the steady state system operation conditions. This work is aimed to investigate such effect on voltage performance, conventional generator daily behavior and automatic voltage regulator operation. Simulations were conducted on a 33-bus IEEE radial distribution power system. In order to provide a reliable study, a real PV power profile was considered

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Ghayyoor, Muhammad, Mian Muhammad Amir Ayaz, Ajmal Farooq, and M. Ali. "Design of an integrated SEPIC and Buck Converter for High Step-down Applications." International Journal of Advanced Natural Sciences and Engineering Researches 7, no. 6 (2023): 214–23. http://dx.doi.org/10.59287/ijanser.1156.

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To overcome the issues related to special power supply called voltage regulator module (VRM) used for microprocessors, a special DC-DC converter will be designed in this work in which single-ended primary inductor (SEPIC) converter and the inverted form of buck converter are combine. As per available literature the problems associated with conventional VRM’s are slow transient response and narrow duty cycle. Other issue related to the voltage regulator module is the high voltage stress that occurs on switches of VRM. The solution to these problems is presented in the form of a new proposed dc-

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Ghayyoor, Muhammad, Mian Muhammad Amir Ayaz, Ajmal Farooq, and M. Ali. "Design of an integrated SEPIC and Buck Converter for High Step-down Applications." International Conference on Applied Engineering and Natural Sciences 1, no. 1 (2023): 436–44. http://dx.doi.org/10.59287/icaens.1036.

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To overcome the issues related to special power supply called voltage regulator module (VRM) used for microprocessors, a special DC-DC converter will be designed in this work in which single-ended primary inductor (SEPIC) converter and the inverted form of buck converter are combine. As per available literature the problems associated with conventional VRM’s are slow transient response and narrow duty cycle. Other issue related to the voltage regulator module is the high voltage stress that occurs on switches of VRM. The solution to these problems is presented in the form of a new proposed dc-

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Anwar, N., A. Hanif, M. U. Ali, and A. Zafar. "Chaotic-based particle swarm optimization algorithm for optimal PID tuning in automatic voltage regulator systems." Electrical Engineering & Electromechanics, no. 1 (February 23, 2021): 50–59. http://dx.doi.org/10.20998/2074-272x.2021.1.08.

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Introduction. In an electrical power system, the output of the synchronous generators varies due to disturbances or sudden load changes. These variations in output severely affect power system stability and power quality. The synchronous generator is equipped with an automatic voltage regulator to maintain its terminal voltage at rated voltage. Several control techniques utilized to improve the response of the automatic voltage regulator system, however, proportional integral derivative (PID) controller is the most frequently used controller but its parameters require optimization. Novelty. In

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Aribowo, Widi. "Focused Time Delay Neural Network For Tuning Automatic Voltage Regulator." EMITTER International Journal of Engineering Technology 7, no. 1 (2019): 34–43. http://dx.doi.org/10.24003/emitter.v7i1.315.

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This paper proposes a novel controller for automatic voltage regulator (AVR) system. The controller is used Focused Time Delay Neural Network (FTDNN). It does not require dynamic backpropagation to compute the network gradient. FTDNN AVR can train network faster than other dynamic networks. Simulation was performed to compare load angle (load angle) and Speed. The performance of the system with FTDNN-AVR has compared with a Conventional AVR (C-AVR) and RNN AVR. Simulations in Matlab/Simulink show the effectiveness of FTDNN-AVR design, and superior robust performance with different cases.

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Chouaba, S. E., and A. Barakat. "Controlled Brushless De-Excitation Structure for Synchronous Generators." Engineering, Technology & Applied Science Research 9, no. 3 (2019): 4218–24. http://dx.doi.org/10.48084/etasr.2768.

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The main weakness of the brushless excitation system in a synchronous generator (SG) is the slow de-excitation response obtained during a load rejection. That is why voltage overshoots may be observed on the generator terminals. This behavior is mainly due to the exciter machine response time and the rotating diode bridge which is not able to quickly de-excite the generator by negative excitation voltages. This paper presents a new brushless de-excitation structure able to perform a quick de-excitation of the generator by providing controlled negative excitation voltage to the generator main f

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Zhao, Shuangxing, Chenchang Zhan, and Guigang Cai. "A 2 × VDD-Enabled Output-Capacitor-Free Low-Dropout Regulator with Fast Transient Response for Low-Cost System-on-Chip." Journal of Circuits, Systems and Computers 27, no. 09 (2018): 1850143. http://dx.doi.org/10.1142/s0218126618501438.

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This paper presents a [Formula: see text]-enabled output-capacitor-free CMOS low-dropout (LDO) regulator with fast transient response for cost-effective system-on-chip (SoC) power management applications with elevated-[Formula: see text] supply. All the MOS transistors used in the proposed LDO regulator are low voltage (LV) MOSFETs, hence saving the high voltage devices fabrication cost required in a conventional design. Two LV power transistors are cascaded in the power train. A mid-rail regulator is used to generate [Formula: see text] voltage for the power transistors as well as the main er

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Yang, Wei Bin, Shao Jyun Xie, and Han Hsien Wang. "A Sub-1V 0.18um Output-Capacitor-Free Digitally Controlled LDO." Applied Mechanics and Materials 764-765 (May 2015): 471–75. http://dx.doi.org/10.4028/www.scientific.net/amm.764-765.471.

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The new digital control loop of the low-dropout regulator (LDO) is presented. It is composed of coarse tracking circuit and fine tracking circuit, and no external output capacitor is required to stabilize the control loop. The proposed method makes the quiescent current lower than conventional analog LDOs. The operational amplifier of the conventional LDO fails to operate at 0.7V, and the developed digital LDO in 0.18um CMOS achieved the 0.7V input voltage and 0.5V output voltage with 99.99% current efficiency and 2.6-μA quiescent current at 20mA load current. Therefore, the proposed DLDO is s

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Narasipuram, Rajanand Patnaik, and Subbarao Mopidevi. "A Novel Hybrid Control Strategy and Dynamic Performance Enhancement of a 3.3 kW GaN–HEMT-Based iL2C Resonant Full-Bridge DC–DC Power Converter Methodology for Electric Vehicle Charging Systems." Energies 16, no. 15 (2023): 5811. http://dx.doi.org/10.3390/en16155811.

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The conventional resonant inductor–inductor–capacitor (L2C) DC–DC converters have the major drawbacks of poor regulation, improper current sharing, load current ripples, conduction losses, and limiting the power levels to operate at higher loads for electric vehicle (EV) charging systems. To address the issues of the L2C converter, this paper proposes an interleaved inductor–inductor–capacitor (iL2C) full-bridge (FB) DC–DC converter as an EV charger with wide input voltage conditions. It comprises two L2C converters operating in parallel on the primary side with 8-GaN switches and maintains th

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Martins Bezerra, Pedro André, Florian Krismer, Johann Walter Kolar, et al. "Experimental Efficiency Evaluation of Stacked Transistor Half-Bridge Topologies in 14 nm CMOS Technology." Electronics 10, no. 10 (2021): 1150. http://dx.doi.org/10.3390/electronics10101150.

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Different Half-Bridge (HB) converter topologies for an Integrated Voltage Regulator (IVR), which serves as a microprocessor application, were evaluated. The HB circuits were implemented with Stacked Transistors (HBSTs) in a cutting-edge 14 nm CMOS technology node in order to enable the integration on the microprocessor die. Compared to a conventional realization of the HBST, it was found that the Active Neutral-Point Clamped (ANPC) HBST topology with Independent Clamp Switches (ICSs) not only ensured balanced blocking voltages across the series-connected transistors, but also featured a more r

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Liang, Jiawei. "Overview of Voltage Regulator Modules in 48 V Bus-Based Data Center Power Systems." CPSS Transactions on Power Electronics and Applications 7, no. 3 (2022): 283–99. http://dx.doi.org/10.24295/cpsstpea.2022.00026.

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The intermediate dc bus voltage in modern data center backend power supply is evolving from conventional 12 V to 48 V. It still requires the voltage regulator modules (VRM) to feed the terminal loads such as memory and computing units operating with very high current (> 100 A/module) and very low logic voltage (0.8 V-1.8 V). This makes it challenging to optimize the design of load-side VRMs with quadrupled input voltage. This paper comprehensively reviews the state-of-the-art 48 V VRMs and categorizes them according to passive component utilization. The first category is inductive solution

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Li, Fanyang, and Hao Jiang. "A High-PSRR Low Dropout Regulator for LNB Using the First-Stage Reference-Included Coarse-Filtering Technique." Journal of Circuits, Systems and Computers 24, no. 02 (2014): 1550022. http://dx.doi.org/10.1142/s021812661550022x.

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A high-PSRR low dropout regulator using the first-stage reference-included coarse-filtering technique is presented, for the reduced output ripple of the low noise block (LNB) power supply in the satellite set-top box. Compared with the conventional system, the regulator with the technique is characterized by the two successive negative feedback loops, so as to alleviate the output ripple of the power supply caused by the preceding DC–DC converter's modulation signal. With the technique, the ripple near to the frequency of the LNB supply voltage tuning signal (22 kHz) can be significantly allev

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Tozser, B., I. Taczi, and A. Torok. "The use of innovative tools in the medium voltage grid development, a case study of series voltage regulator." Renewable Energy and Power Quality Journal 21, no. 1 (2023): 594–99. http://dx.doi.org/10.24084/repqj21.409.

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The rapid technological improvements concerning the renewable energy sources and the energy policy of the European Union, and the National Energy Strategy are leading to a rapid increase in the number of intermittent renewable power plants. Thus, new challenges emerge in the operation of the distribution system. To operate the system efficiently, the use of innovative technologies must be considered, because conventional network development strategies cannot always provide an optimal solution for the problem. This paper analyses the effects of largescale wind power generation on a medium volta

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Goff, Daniel T., Steve J. A. Majerus, and Walter Merrill. "A 200 °C Quad-Output Buck Type Switched Mode Power Supply IC." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2014, HITEC (2014): 000022–27. http://dx.doi.org/10.4071/hitec-ta16.

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A high temperature (&gt;200 °C), quad-output, buck type switched-mode power supply (SMPS) IC capable of operating over a wide input supply range of 6 V to 15 V is described. The IC is a compact power supply solution for multi-voltage microprocessors, sensors, and actuators. The SMPS topology is a 112 kHz fixed-frequency, synchronous buck converter with slope compensation. A novel internal feedback design enables the output voltages to be pin-programmed to one of three common supply voltages—5 V, 3.3 V, or 1.8 V—while an external resistor divider can also be used for arbitrary voltage progr

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Hong, Qian-Rong, Pak-Ian Chan, Wai-Kit Sou, Cheng Gong, and Chi-Seng Lam. "Linear Quadratic Regulator Optimal Control with Integral Action (LQRIC) for LC-Coupling Hybrid Active Power Filter." Applied Sciences 12, no. 19 (2022): 9772. http://dx.doi.org/10.3390/app12199772.

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Renewable energy generation and nonlinear load devices will generate harmonics and reactive power to power grids, resulting in current distortion and low power factors. To solve the power quality problems, the LC-coupling hybrid active power filter (LC-HAPF) is proposed, with lower DC-link voltage and lower cost compared with conventional active power filters (APFs). The LC-HAPF requires a controller to operate, therefore, hysteresis current control (HCC) and proportional current control (PCC) were proposed. However, they both result in significant steady-state error. Hence, linear quadratic r

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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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Liu, Xiao Wei, Bing Jun Lv, Peng Fei Wang, Liang Yin, and Na Xu. "A Curvature-Compensated, High Power Supply Rejection CMOS Bandgap Reference for MEMS Micro-Accelerometer." Key Engineering Materials 483 (June 2011): 481–86. http://dx.doi.org/10.4028/www.scientific.net/kem.483.481.

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The reference is an important part in the accelerometer system. With the development of science and technology, the request of the performance of accelerometers is increasingly higher and the precision of reference directly affects the performance of accelerometers. Therefore, a reference voltage applicable to accelerometers is presented based on the analysis of basic principles of conventional bandgap reference (BGR) in this paper. A high-order curvature compensation technique, which uses a temperature dependent resistor ratio generated by a high poly resistor and a nwell resistor, effectivel

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Mohamed, Mohamed A. A., Seang Shen Yeoh, Jason Atkin, Ahmed M. Diab, Mohsen Khalaf, and Serhiy Bozhko. "Enhanced Starting Control Scheme for PMM-Based Starter/Generator System for MEA." Aerospace 10, no. 2 (2023): 168. http://dx.doi.org/10.3390/aerospace10020168.

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A control approach for aircraft Starter/Generator (S/G) with Permanent Magnet Machine (PMM) operating in Flux Weakening (FW) mode is presented. The proposed strategy helps the previous approaches which are adopted for the Variable Voltage Bus (VVB) or Voltage Wild Bus (VWB) concept for an aircraft Electric Power System (EPS), to cover a wide speed range in motoring and generation modes. Compared to prior works, the proposed control approach adjusts the q-axis reference voltage with a single current regulator, and the maximum available voltage provided by the converter is used to evaluate the d

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Kumar, Ch Santosh, and S. Tara Kalyani. "Power Quality Improvement using Solar Fed Multilevel Inverter Based STATCOM." International Journal of Electrical and Electronics Research 10, no. 4 (2022): 1159–65. http://dx.doi.org/10.37391/ijeer.100464.

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The major goal about suggested technique is to use a PSO-based proportional-integral (PI) controller towards enhance power quality performance about three-phase grid-connected inverter system. An approach like aforementioned tries to stabilize output current & voltage, lower harmonics, & lessen DC link input voltage fluctuation. Through reducing error about voltage regulator & current controller schemes in inverter system, particle swarm optimization (PSO) technique was used towards adjust PI controller settings. When compared to conventional approach, simulation results show certa

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Samman, Faizal Arya, Dea Fatriziah Hamka, Made Dharma Budy Diatmika, and Ida Rachmaniah Sahali. "Adaptive Interpolated PI Gain Scheduling for Voltage Regulator in Solar Charge Controller Applications." E3S Web of Conferences 72 (2018): 02001. http://dx.doi.org/10.1051/e3sconf/20187202001.

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Buck-boost converter is one of the dc-dc convert0.er that can both increase and decrease the value of output voltage. Due to its wide output range, this converter is very appropriate for using in solar-based electric generation systems. To control the stable expected output voltage, this converter is usually integrated with feedback control. One of the old and widely used control techniques is PID control. However, conventional PID controls still have deficiencies, because the parameters of PID parameters are static so that for wide ranges of input or load will provide different transient resp

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Alapati, Suresh, Sreehari Rao Patri, and K. S. R. Krishna Prasad. "An Adaptively Biased Capacitor-Less Low Dropout Regulator with Improved Transient Performance." Journal of Circuits, Systems and Computers 26, no. 10 (2017): 1750146. http://dx.doi.org/10.1142/s0218126617501468.

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A novel fully on-chip low dropout (LDO) linear regulator with a supply voltage of 1.6[Formula: see text]V, dropout voltage of 200[Formula: see text]mV and a quiescent current of 64.4[Formula: see text][Formula: see text]A is presented in this paper. The slew rate limitations of conventional low dropout regulator (LDR) employing folded cascode structure are overcome by fixed bias LDR (FB LDR) with the usage of recycled transistors of conventional LDR. The FB LDR with its limited input common mode range limits the transient response. The adaptive bias LDR (AB LDR) overcomes these limitations of

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