Relevant bibliographies by topics / Voltage regulators

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Voltage regulators'

Author: Grafiati
Published: 4 June 2021
Last updated: 31 July 2024

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Journal articles on the topic "Voltage regulators"

1

Blakiewicz, Grzegorz. "Low-Voltage LDO Regulator Based on Native MOS Transistor with Improved PSR and Fast Response." Energies 16, no. 12 (June 20, 2023): 4825. http://dx.doi.org/10.3390/en16124825.

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In this paper, a low-voltage low-dropout analog regulator (ALDO) based on a native n-channel MOS transistor is proposed. Application of the native transistor with the threshold voltage close to zero allows elimination of the charge pump in low-voltage regulators using the pass element in a common drain configuration. Such a native pass transistor configuration allows simplification of regulator design and improved performance, with supply voltages below 1 V, compared to commonly used regulators with p-channel MOS transistors. In the presented design of ALDO regulator in 180 nm CMOS X-FAB technology, an output voltage of 0.7 V was achieved with an output current of 10 mA and a supply voltage of 0.8 V. Simulation results show that despite the low supply voltage, output voltage spikes do not exceed 70 mV at the worst technology corner when output current transients from 100 µA to 10 mA. Under such conditions, stable operation and power supply rejection PSR = 35 dB were achieved with an output capacitance of 0–500 pF. The proposed regulator allows to push the limit of ALDO regulator applications to voltages below 1 V with only slight degradation of its performance.
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Panov, Emil Ivanov, Emil Stefanov Barudov, and Milena Dimitrova Ivanova. "Two-port parameters of autotransformer discrete alternating voltage regulators." South Florida Journal of Development 3, no. 6 (December 14, 2022): 7049–63. http://dx.doi.org/10.46932/sfjdv3n6-051.

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The present paper is dedicated to an unusual analysis of an autotransformer discrete alternating voltage regulator presented as a two-port with a load. The main purpose of the study is to determine the different sets of parameters (matrices) of this two-port – ABCD, B–, H-, G-, Z-, Y-parameters and the characteristic parameters. A Matlab simulation model of the autotransformer discrete alternating voltage regulator with four commutators, realized by thyristor switches, corresponding to different supply voltages, is used for the analysis. The non-linearities of the regulator’s circuit have been considered in the model. The received results were experimentally verified in the case of an active load and a good coincidence less than 1% was achieved. These parameters can be used for quick and accurate analysis of such a device in case of arbitrary type of the load – active, inductive or capacitive. The obtained results could be used to improve the methodologies for designing such regulators.
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Malakhanov, Alexey A., Alla G. Malakhanova, and Yulia O. Vasil'eva. "Development and verification of behavioral models of linear voltage regulators with duty cycle short circuit and overload protection." Proceedings of Tomsk State University of Control Systems and Radioelectronics 26, no. 2 (2023): 103–8. http://dx.doi.org/10.21293/1818-0442-2023-26-2-103-108.

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The object of development are behavioral models of a linear negative voltage regulator in two modifications. Linear voltage regulators manufactured by KREMNIY EL GROUP JSC were chosen as prototypes for the models. IC 5348EM035 with a fixed output negative voltage value of 5 V, IC 5348EP035 with an adjustable output negative voltage value of 1.25V to 14.5V and their functional analogue IC UCC284DP manufactured by Texas Instruments were used. These are low voltage drop with duty cycle short circuit and overload protection regulators. Behavioral models are implemented in SPICE language through converting netlists of prototype equivalent circuits. Equivalent circuits on the regulators IC functional circuits were made, taking into account a typical switching circuit. Equivalent circuits of regulators are implemented on the standard mathematical blocks, limiters, dependent sources, controlled switches and passive elements. Parameter limits are written inside controlled sources by mathematical relations. When verifying behavioral models, it was established that the results of modeling the regulators operation correspond to the data in the technical descriptions of manufacturers. The verification was carried in typical switching circuits with given input electrical parameters. In present study the results of modeling the main characteristics of microcircuits are described: input and output voltages, voltage drop across the regulator and timing diagrams of the main modes of operation of the IC, including the mode of duty cycle short circuit and overload protection regulators. The developed and verified behavioral models of linear voltage regulators 5348EM035 and 5348EP035 and their functional analogue UCC284DP will be useful in the engineering, design and study of the characteristics of power supply devices for electronic and industrial equipment. These SPICE models are applicable in modern specialized CAD systems for circuit design and simulation.
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Lastovetskyi, Oleh, and Ihor Likhnovskyi. "METHOD OF MEASURING PSRR FOR LINEAR VOLTAGE REGULATORS." Measuring Equipment and Metrology 85, no. 2 (2024): 54–57. http://dx.doi.org/10.23939/istcmtm2024.02.054.

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The article describes a method for measuring the power supply rejection ratio and its characteristics. A simulation of the measurement in the LTspice program considering a linear voltage regulator as an example, with varying output capacitance is studied.
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5

Yavuz, Kutluhan Kürşad, Ertuğrul Karakulak, and Reşat Mutlu. "Memristor-based series voltage regulators." Journal of Electrical Engineering 70, no. 6 (December 1, 2019): 465–72. http://dx.doi.org/10.2478/jee-2019-0079.

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Abstract Series linear voltage regulators are integrated circuits commonly used to make adjustable voltage sources. When used with potentiometers, these regulators are able to give adjustable voltage at the output. Memristor is a new nonlinear circuit element which came out in the last decade. It is able to provide electronically adjustable resistance. If a memristor is fed with a voltage over the threshold and it is not under saturation, its resistance also called memristance is dependent on the integration of its current, also called memristor charge. Memristor shows promise for different types and lots of digital and analog applications. In this paper, memristor-based series voltage regulator topologies are suggested and they are examined using parameters and simulations. Some design criteria have been given for the memristor-based series voltage regulators.
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Sheikholeslami, Ali. "Voltage Regulators [Circuit Intuitions]." IEEE Solid-State Circuits Magazine 12, no. 4 (2020): 15–18. http://dx.doi.org/10.1109/mssc.2020.3021866.

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7

Brito, Vinícius Henrique Farias, José Carlos de Oliveira, and Fabricio Parra Santilio. "Modeling and Performance Evaluation of an Electromagnetic Voltage Regulator via Series Compensation." Transactions on Environment and Electrical Engineering 4, no. 1 (June 14, 2020): 12. http://dx.doi.org/10.22149/teee.v4i1.138.

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Although there currently exists a wide range of voltage regulators that are commercially available, the search for devices with a simpler physical design remains the focus of research studies. Following this line, an electromagnetic voltage regulator (EVR) arrangement has been proposed. The EVR is constituted of an autotransformer that supplies, via discrete taps, a series transformer that injects voltage for regulating the feeder voltage. Even though its operating principle is shown as being similar to that of other devices on the market, the physical arrangement and operating strategy of EVR show novelties which result in properties such as: economic attractiveness, constructive simplicity, and operational reliability. Moreover, when installing voltage regulators, efficacy studies must be carried out to optimize equipment design. In this context, this paper aims at evaluating the factors that influence the effectiveness of the EVR in restoring voltage variations according to the determinations imposed by regulatory agencies. The ultimate goal of this study is to determine the voltage deviation range that the EVR is able to restore. To achieve this goal, a mathematical modeling of the EVR is given and study cases are computationally carried out to investigate its performance when connected to a typical distribution feeder.
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8

Melikyan, Vazgen Sh, Andranik K. Hayrapetyan, Hakob T. Kostanyan, Hayk V. Margaryan, Hayk T. Grigoryan, and Armen A. Martirosyan. "Power Supply Ratio Improvement Using Self-Calibration in Voltage Regulators." Proceedings of Universities. Electronics 24, no. 3 (June 2019): 248–56. http://dx.doi.org/10.24151/1561-5405-2019-24-3-248-256.

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9

Belukhin, D. S. "Improvement of reliability of systems for automatic regulating the voltage of electric rolling stock." Science and Transport Progress, no. 41 (August 25, 2012): 75–80. http://dx.doi.org/10.15802/stp2012/7673.

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Vukic, Vladimir, and Predrag Osmokrovic. "On-line monitoring of base current and forward emitter current gain of the voltage regulator's serial pnp transistor in a radiation environment." Nuclear Technology and Radiation Protection 27, no. 2 (2012): 152–64. http://dx.doi.org/10.2298/ntrp1202152v.

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A method of on-line monitoring of the low-dropout voltage regulator's operation in a radiation environment is developed in this paper. The method had to enable detection of the circuit's degradation during exploitation, without terminating its operation in an ionizing radiation field. Moreover, it had to enable automatic measurement and data collection, as well as the detection of any considerable degradation, well before the monitored voltage regulator's malfunction. The principal parameters of the voltage regulator's operation that were monitored were the serial pnp transistor's base current and the forward emitter current gain. These parameters were procured indirectly, from the data on the voltage regulator's load and quiescent currents. Since the internal consumption current in moderately and heavily loaded devices was used, the quiescent current of a negligibly loaded voltage regulator of the same type served as a reference. Results acquired by on-line monitoring demonstrated marked agreement with the results acquired from examinations of the voltage regulator's maximum output current and minimum dropout voltage in a radiation environment. The results were particularly consistent in tests with heavily loaded devices. Results obtained for moderately loaded voltage regulators and the risks accompanying the application of the presented method, were also analyzed.
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Dissertations / Theses on the topic "Voltage regulators"

1

Quintero, Francisco Javier 1955. "Analysis of an integrated voltage regulator amplifier and design alternatives." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276753.

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This Thesis Research involves the analysis, simulation and design alternatives for an industrially-relevant voltage regulator. An initial prototype circuit, designed by Texas Instruments Inc., is simulated and analysed in detail. Then an alternative circuit is derived which improves the circuit performance by implementing different compensation techniques and some transistors modifications. The final circuit has excellent phase margin, transient response and load regulation.
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Lee, Kisun. "Advanced Control Schemes for Voltage Regulators." Diss., Virginia Tech, 2008. http://hdl.handle.net/10919/26938.

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The microprocessor faces a big challenge of heat dissipation. In order to enhance the performance of the microprocessor without increasing the heat dissipation, the leading microprocessor company, Intel, uses several methods to reduce the power consumption. Theses methods include enhanced sleep states control, the Speed Step technology, and multi-core architecture. These are closely related to the Voltage Regulator (VR), a dedicated power supply for the microprocessor and its control method. The speed of the VR control system should be high in order to meet the stringent load-line requirements with the high current and high di/dt, otherwise, a lot of decoupling capacitors are necessary. Capacitors make the VR cost and size higher. Therefore, the VR control method is very important. This dissertation discusses the way to increase the speed of VR without degrading other functions, such as the system efficiency, and the required control functions (AVP, current sharing and interleaving). The easiest way to increase the speed of the VR is to increase the switching frequency. However, higher switching frequency results in system efficiency degradation. This paper uses two approaches to deal with this issue. The first one is the architecture approach. The other is the fast transient control approach. For the architecture approach, a two-stage architecture is chosen. It is already shown that with a two-stage architecture, the switching frequency of the second stage can be increased, while keeping the same system efficiency. Therefore with the two-stage architecture, a high performance VR can be easily implemented. However, the light-load efficiency of two-stage architecture is not good because the bus voltage is designed for the full-load efficiency which is not optimized for the light load. The light-load efficiency is also important factor and it should be maximized because it is related to the battery life of mobile application or the energy utilization. Therefore, Adaptive Bus Voltage Positioning (ABVP) control has been proposed. By adaptively adjusting the bus voltage according to the load current, the system efficiency can be optimized for whole load range. The bus voltage rate of change is determined by the first stage bandwidth. In order to maintain regulation during a fast dynamic load, the first stage bandwidth should be high. However, it is observed from hardware when the first stage bandwidth is higher, the ABVP system can become unstable. To get a stable system, the first stage bandwidth is often designed to be slow which causes poor ABVP dynamic response. The large number of bus capacitors necessary for this also increases the size and cost. In this dissertation, in order to raise the first stage bandwidth, a stability analysis is performed. The instability loop (TABVP) is identified, and a small signal model to predict this loop is suggested. TABVP is related to the first stage bandwidth. With the higher first stage bandwidth, the peak magnitude of TABVP is larger. When the peak magnitude of TABVP touches 0dB, the system becomes unstable. Two solutions are proposed to reduce this TABVP magnitude without decreasing the first stage bandwidth. One method is to increase the feedforward gain and the other approach is to use a low pass filter. With these strategies, the ABVP system can be designed to be stable while pushing first stage bandwidth as high as possible. The ABVP-AVP system and its design are verified with hardware. For the fast transient control approach hysteretic control is chosen because of its fast transient and high light-load efficiency with DCM operation. However, in order to use the hysteretic control method for multiphase VR applications interleaving must be implemented. In this dissertation, a multiphase hysteretic control method is proposed which can achieve interleaving without losing its benefits. Using the phase locked loop (PLL), this control method locks the phase and frequency of the duty cycles to the reference clocks by modifying the size of the hysteretic band, to say, hysteretic band width. By phase shifting the reference clocks, interleaving can be achieved under steady state. During the load transient, the system loses the phase-locking function due to the slow hysteretic band width changing loop, and the system then reacts quickly to the load change without the interruption from the phase locking function (or the interleaving function). The proposed hysteretic control method consists of two loops, the fast hysteretic control loop and the slow hysteretic band width changing loop. These two nonlinear loops are difficult to model and analyze together. Therefore, assuming these two loops can be separated because of the speed difference, the phase plane model is used for the fast hysteretic control loop and the sampled data model is then used for the slow hysteretic band width changing loop. With these models, the proposed hysteretic control method can be analyzed and properly designed. However, if the transient occurs before the slow hysteretic band width changing loop settles down, the transient may start with the large hysteretic band width and the output voltage peak can exceed the specification. To prevent this, a hysteretic band width limiter is inserted. With the hardware, the proposed hysteretic control method and its design are verified. A two-phase VR with 300kHz switching frequency is built and the output capacitance required is only 860μF comparing to 1600μF output capacitance with the 50kHz bandwidth linear control method. That is about 46% capacitor reduction. The proposed hysteretic control method saturates the controller during the transient and the transient peak voltage is determined by the power stage parameters, the inductance and the output capacitors. By decreasing the inductance, the output capacitors are reduced. However, small inductance results in the low efficiency. In order to resolve this, the coupled inductor is used. With the coupled inductor, the transient inductance can be reduced with the same steady state inductance. Therefore, the transient speed can be faster without lowering down the system efficiency. The proposed hysteretic control method with the coupled inductor can be implemented using the DCR current sensing network. A two-phase VR with the proposed hysteretic control and the coupled inductor is built and the output capacitance is only 660μF comparing to 860μF output capacitance with the proposed hysteretic control only. A 23% capacitor reduction is achieved. And compared to the 50kHz bandwidth linear control method, a 60% capacitor reduction is achieved.
Ph. D.
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Zhou, Jinghai. "High Frequency, High Current Density Voltage Regulators." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/27268.

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As a very special DC-DC converter, VRM (Voltage Regulator Module) design must follow the fast-developing trend of microprocessors. The design challenges are the high current, high di/dt, and stringent load-line requirement. When the energy is transferred from the input of a VRM, through the VRM, then through the power delivery path to the processor, it needs sufficient capacitors to relay this energy. The capacitorsâ number appears to be unrealistically large if we follow todayâ s approach for the future processors. High frequency VRM with high control bandwidth can solve this problem, however, the degradation of efficiency makes the conventional buck converter and the hard-switching isolated topologies incapable of operating at higher frequency. The research goal is to develop novel means that can help a high-output- current VRM run efficiently at high frequency. A novel Complementary Controlled Bridge (CCB) self-driven concept is proposed. With the proposed self-driven scheme, the combination of the ZVS technique and the self-driven technique recycles the gate driving energy by making use of the input capacitor of the secondary- side synchronous rectifier (SR) as the snubber capacitor of the primary-side switches. Compared to the external driver, the proposed converter can save driving loss and synchronous rectifier body diode conduction loss. Additionally, compared to the existing level-shifted self-driven scheme for bridge-type symmetrical topologies, its gate signal ringing is small and suitable for high-frequency applications. Although the CCB self-driven VRM reduces the switching frequency-related losses significantly, the conduction loss is still high. Inspired by the current-doubler concept, a novel ZVS current-tripler DC-DC converter is proposed in this work. By utilizing more SR devices to share the current during the freewheeling period, the SR conduction loss is reduced. The current-tripler DC-DC converter has a delta/delta connected transformer that can be implemented with integrated magnetics. The transformer then becomes an integrated magnetic with distributed windings, which is preferred in high current applications. The current-tripler DC-DC converter in fact meets the requirements for the CCB self-driven scheme. The two concepts are then combined with an integrated gate drive transformer. The proposed CCB self-driven concept and current-tripler concept can both be applied to the 12V non-isolated VRMs. The proposed topology is basically a buck-derived soft-switching topology with duty cycle extension and SR device self-driven capabilities. Because there is no isolation requirement, the SR gate driving becomes so simple that the voltage at the complementary controlled bridge can be used to directly drive the SR gate. Both the gate driving loss and the SR body diode conduction loss are reduced. The proposed circuit achieves similar overall efficiency to a conventional 300kHz buck converter running at 1MHz. All the circuits proposed in this dissertation can use coupling inductors to improve both the steady-state efficiency and dynamic performances. The essence of the coupling inductors concept is to provide different equivalent inductances for the steady state and the transient. Moreover, when a current loop becomes necessary to achieve proper current sharing among phases, the current loop sample hold effect will make it difficult to push the bandwidth. The sample hold effect is alleviated by the coupling inductors concept. A small-signal model is proposed to study the system dynamic performance difference with different coupling inductor designs. As the verification, the coupling concept is applied to the 12V non-isolated CCB self-driven VRM and the bandwidth as high as one third of the switching frequency is achieved, which means a significant output capacitor reduction.
Ph. D.
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Xiao, Shangyang. "TRANSIENT RESPONSE IMPROVEMENT FOR MULTI-PHASE VOLTAGE REGULATORS." Doctoral diss., University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3909.

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Next generation microprocessor (Vcore) requirements for high current slew rates and fast transient response together with low output voltage have posed great challenges on voltage regulator (VR) design . Since the debut of Intel 80X86 series, CPUs have greatly improved in performance with a dramatic increase on power consumption. According to the latest Intel VR11 design guidelines , the operational current may ramp up to 140A with typical voltages in the 1.1V to 1.4V range, while the slew rate of the transient current can be as high as 1.9A/ns [1, 2]. Meanwhile, the transient-response requirements are becoming stringer and stringer. This dissertation presents several topics on how to improve transient response for multi-phase voltage regulators. The Adaptive Modulation Control (AMC) is a type of non-linear control method which has proven to be effective in achieving high bandwidth designs as well as stabilizing the control loop during large load transients. It adaptively adjusts control bandwidth by changing the modulation gain, depending on different load conditions. With the AMC, a multiphase voltage regulator can be designed with an aggressively high bandwidth. When in heavy load transients where the loop could be potentially unstable, the bandwidth is lowered. Therefore, the AMC provides an optimal means for robust high-bandwidth design with excellent transient performance. The Error Amplifier Voltage Positioning (EAVP) is proposed to improve transient response by removing undesired spikes and dips after initial transient response. The EAVP works only in a short period of time during transient events without modifying the power stage and changing the control loop gain. It facilitates the error amplifier voltage recovering during transient events, achieving a fast settling time without impact on the whole control loop. Coupled inductors are an emerging topology for computing power supplies as VRs with coupled inductors show dynamic and steady-state advantages over traditional VRs. This dissertation first covers the coupling mechanism in terms of both electrical and reluctance modeling. Since the magnetizing inductance plays an important role in the coupled-inductor operation, a unified State-Space Averaging model is then built for a two-phase coupled-inductor voltage regulator. The DC solutions of the phase currents are derived in order to show the impact of the magnetizing inductance on phase current balancing. A small signal model is obtained based on the state-space-averaging model. The effects of magnetizing inductance on dynamic performance are presented. The limitations of conventional DCR current-sensing for coupled inductors are addressed. Traditional inductor DCR current sensing topology and prior arts fail to extract phase currents for coupled inductors. Two new DCR current sensing topologies for coupled inductors are presented in this dissertation. By implementation of simple RC networks, the proposed topologies can preserve the coupling effect between phases. As a result, accurate phase inductor currents and total current can be sensed, resulting in excellent current and voltage regulation. While coupled-inductor topologies are showing advantages in transient response and are becoming industry practices, they are suffering from low steady-state operating efficiency. Motivated by the challenging transient and efficiency requirements, this dissertation proposes a Full Bridge Coupled Inductor (FBCI) scheme which is able to improve transient response as well as savor high efficiency at (a) steady state. The FBCI can change the circuit configuration under different operational conditions. Its "flexible" topology is able to optimize both transient response and steady-state efficiency. The flexible core configuration makes implementation easy and clear of IP issues. A novel design methodology for planar magnetics based on numerical analysis of electromagnetic fields is offered and successfully applied to the design of low-voltage high power density dc-dc converters. The design methodology features intense use of FEM simulation. The design issues of planar magnetics, including loss mechanism in copper and core, winding design on PCB, core selections, winding arrangements and so on are first reviewed. After that, FEM simulators are introduced to numerically compute the core loss and winding loss. Consequently, a software platform for magnetics design is established, and optimized magnetics can then be achieved. Dynamic voltage scaling (DVS) technology is a common industry practice in optimizing power consumption of microprocessors by dynamically altering the supply voltage under different operational modes, while maintaining the performance requirements. During DVS operation, it is desirable to position the output voltage to a new level commanded by the microprocessor (CPU) with minimum delay. However, voltage deviation and slow settling time usually exist due to large output capacitance and compensation delay in voltage regulators. Although optimal DVS can be achieved by modifying the output capacitance and compensation, this method is limited by constraints from stringent static and dynamic requirements. In this dissertation, the effects of output capacitance and compensation network on DVS operation are discussed in detail. An active compensator scheme is then proposed to ensure smooth transition of the output voltage without change of power stage and compensation during DVS. Simulation and experimental results are included to demonstrate the effectiveness of the proposed scheme.
Ph.D.
School of Electrical Engineering and Computer Science
Engineering and Computer Science
Electrical Engineering PhD
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Rincon-Mora, Gabriel Alfonso. "Current efficient, low voltage, low drop-out regulators." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/13359.

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Turner, Steven Primitivo. "Adaptive out of step relay algorithm." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-01242009-063244/.

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7

Olajubutu, Michael Olaolu. "Utilizing microprocessor based relays as predictive tools to mitigate voltage instability problems that stem from the fast voltage collapse and delayed voltage recovery phenomena." Auburn, Ala., 2007. http://repo.lib.auburn.edu/07M%20Theses/OLAJUBUTU_MICHAEL_35.pdf.

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Milošević, Borka. "On voltage stability monitoring and control using multiagent systems." Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/16355.

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Al-Hinai, Amer. "Voltage collapse prediction for interconnected power systems." Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1639.

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Thesis (M.S.)--West Virginia University, 2000.
Title from document title page. Document formatted into pages; contains xii, 94 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 66-67).
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López, Julià Toni. "Prospects of voltage regulators for next generation computer microprocessors." Doctoral thesis, Universitat Politècnica de Catalunya, 2010. http://hdl.handle.net/10803/77908.

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Synchronous buck converter based multiphase architectures are evaluated to determine whether or not the most widespread voltage regulator topology can meet the power delivery requirements of next generation computer microprocessors. According to the prognostications, the load current will rise to 200A along with the decrease of the supply voltage to 0.5V and staggering tight dynamic and static load line tolerances. In view of these demands, researchers face serious challenges to bring forth compliant solutions that can further offer acceptable conversion efficiencies and minimum mainboard area occupancy. Among the most prominent investigation fronts are those surveying fundamental technology improvements aiming at making power semiconductor devices more effective at high switching frequency. The latter is of critical importance as the increase of the switching frequency is fundamentally recognized as the way forward to enhance power density conversion. Provided that switching losses must be kept low to enable the miniaturization of the filter components, one primary goal is to cope with semiconductor and system integration technologies enabling fast dynamic operation of ultra-low ON resistance power switches. This justifies the main focus of this thesis work, centered around a comprehensive analysis of the MOSFET switching behavior in the synchronous buck converter. The MOSFETs dynamic operation, far from being well describable with the traditional clamped inductive hard-switching mode, is strongly influenced by a number of frequently ignored linear and nonlinear parasitic elements that must be taken into account in order to fully predict real switching waveforms, understand their dynamics, and most importantly, identify and quantify the related mechanisms leading to heat generation. This will be revealed from in-depth investigations of the switched converter under fast switching speeds and heavy load. Recognizing the key relevance of appropriate modeling tools that support this task, the second focal point of the thesis aims at developing a number of suitable models for the switching analysis of power MOSFETs. Combined with a series of design guidelines and optimization procedures, these models form the basis of a proposed methodological approach, where numerical computations replace the usually enormous experimental effort to elucidate the most effective pathways towards reducing power losses. This gives rise to the concept referred to as virtual design loop, which is successfully applied to the development of a new power MOSFET technology offering outstanding dynamic and static performance characteristics. From a system perspective, the limits of the power density conversion will be explored for this and other emerging technologies that promise to open up a new paradigm in power integration capabilities.
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Books on the topic "Voltage regulators"

1

Shusterman, Dmitry. Keswick Powerplant voltage regulator commissioning. Denver, Colo: U.S. Bureau of Reclamation, 1992.

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IEEE Power Engineering Society. Transformers Committee., IEEE Standards Board, and American National Standards Institute, eds. IEEE guide for loading liquid-immersed step-voltage and induction-voltage regulators. New York, NY, USA: Institute of Electrical and Electronics Engineers, 1988.

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Agee, J. C. Keswick Powerplant Unit 1 excitation system commissioning. Denver, Colo: Electric Power Branch, Research and Laboratory Services Division, Denver Office, U.S. Dept. of the Interior, Bureau of Reclamation, 1990.

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Borisov, V. P. Stabilizatory napri͡a︡zhenii͡a︡ s perekli͡u︡chaemymi regulirui͡u︡shchimi ėlementami. Moskva: Ėnergoatomizdat, 1985.

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Vasilʹevich, Kobzev Anatoliĭ, ed. Stabilizatory peremennogo napri͡a︡zhenii͡a︡ s vysokochastotnym shirotno-impulʹsnym regulirovaniem. Moskva: Ėnergoatomizdat, 1986.

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Sarv, V. V. Ventilʹnye t͡s︡epi regulirovanii͡a︡ napri͡a︡zhenii͡a︡ s upravli͡a︡emym mezhfaznym ėnergoobmenom. Tallinn: "Valgus", 1986.

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Y, Inouye L., and United States. National Aeronautics and Space Administration., eds. Operation of high power converters in parallel. [Washington, DC]: National Aeronautics and Space Administration, 1993.

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Y, Inouye L., and United States. National Aeronautics and Space Administration., eds. Operation of high power converters in parallel. [Washington, DC]: National Aeronautics and Space Administration, 1993.

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Milovzorov, V. P. Diskretnye stabilizatory i formirovateli napri͡a︡zhenii͡a︡. Moskva: Ėnergoatomizdat, 1986.

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Venikov, V. A. Regulirovanie napri͡a︡zhenii͡a︡ v ėlektroėnergeticheskikh sistemakh. Moskva: Ėnergoatomizdat, 1985.

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Book chapters on the topic "Voltage regulators"

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P.-Vaisband, Inna, Renatas Jakushokas, Mikhail Popovich, Andrey V. Mezhiba, Selçuk Köse, and Eby G. Friedman. "Voltage Regulators." In On-Chip Power Delivery and Management, 259–75. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-29395-0_16.

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Asadi, Farzin. "Voltage Regulators." In Applied Op Amp Circuits, 315–35. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-3881-0_11.

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Williams, B. W. "AC Voltage Regulators." In Power Electronics, 249–63. London: Macmillan Education UK, 1987. http://dx.doi.org/10.1007/978-1-349-18525-2_12.

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Pederson, Donald O., and Kartikeya Mayaram. "Rectifiers, Regulators and Voltage References." In Analog Integrated Circuits for Communication, 521–47. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4757-2128-7_15.

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Lenaerts, Bert, and Robert Puers. "Power Converters and Voltage Regulators." In Analog Circuits and Signal Processing, 83–117. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-1-4020-9075-2_4.

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Asadi, Farzin. "Voltage Regulators and Power Amplifiers." In Analog Electronic Circuits Laboratory Manual, 167–76. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-25122-1_7.

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Raczynski, Stanislaw. "Power Sources, Voltage Regulators, Thyristor Applications." In How Circuits Work, 103–10. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-34934-8_5.

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López, Toni, Reinhold Elferich, and Eduard Alarcón. "Introduction." In Voltage Regulators for Next Generation Microprocessors, 1–65. New York, NY: Springer New York, 2010. http://dx.doi.org/10.1007/978-1-4419-7560-7_1.

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López, Toni, Reinhold Elferich, and Eduard Alarcón. "Model Level 0: Switching Behavior of Power MOSFETs." In Voltage Regulators for Next Generation Microprocessors, 67–132. New York, NY: Springer New York, 2010. http://dx.doi.org/10.1007/978-1-4419-7560-7_2.

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López, Toni, Reinhold Elferich, and Eduard Alarcón. "Model Level 1: Piecewise Linear Analytical Switching Model." In Voltage Regulators for Next Generation Microprocessors, 133–95. New York, NY: Springer New York, 2010. http://dx.doi.org/10.1007/978-1-4419-7560-7_3.

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Conference papers on the topic "Voltage regulators"

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Sidorov, Andrey V. "AC voltage regulators review." In 2016 17th International Conference of Young Specialists on Micro/Nanotechnologies and Electron Devices (EDM). IEEE, 2016. http://dx.doi.org/10.1109/edm.2016.7538800.

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Udovichenko, Aleksei V., and Alena D. Kovetskaya. "AC Voltage Regulators Review." In 2021 IEEE 22nd International Conference of Young Professionals in Electron Devices and Materials (EDM). IEEE, 2021. http://dx.doi.org/10.1109/edm52169.2021.9507725.

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Panfilov, Dmitry I., Michail I. Petrov, and Michail G. Astashev. "Analysis Of Voltage Regulators With Boost Voltage." In 2019 IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe). IEEE, 2019. http://dx.doi.org/10.1109/eeeic.2019.8783879.

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McGrath, Andrew. "Advances in MV voltage regulators." In 2013 48th International Universities' Power Engineering Conference (UPEC). IEEE, 2013. http://dx.doi.org/10.1109/upec.2013.6715003.

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Radoias, Liviu, Gheorghe Dilimot, and Gheorghe Brezeanu. "Temperature compensated oscillator for voltage regulators." In 2011 10th International Symposium on Signals, Circuits and Systems (ISSCS). IEEE, 2011. http://dx.doi.org/10.1109/isscs.2011.5978716.

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"A3L-F Voltage References and Regulators." In 2008 15th IEEE International Conference on Electronics, Circuits and Systems. IEEE, 2008. http://dx.doi.org/10.1109/icecs.2008.4675151.

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Udovichenko, Aleksey, and Gennady Zinoviev. "AC voltage regulators with switched capacitors." In 2016 IEEE International Power Electronics and Motion Control Conference (PEMC). IEEE, 2016. http://dx.doi.org/10.1109/epepemc.2016.7751972.

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Julu Sun, Ming Xu, David Reusch, and Fred C. Lee. "High efficiency quasi-parallel Voltage Regulators." In 2008 IEEE Applied Power Electronics Conference and Exposition - APEC 2008. IEEE, 2008. http://dx.doi.org/10.1109/apec.2008.4522814.

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Yan Dong, Fred C. Lee, and Ming Xu. "Evaluation of coupled inductor Voltage Regulators." In 2008 IEEE Applied Power Electronics Conference and Exposition - APEC 2008. IEEE, 2008. http://dx.doi.org/10.1109/apec.2008.4522817.

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Enrique Valverde Landivar, Galo, Ervin Solano, and Roy Santana. "Optimal Voltage Regulation on Medium Voltage Line In Rural Area Using DIgSILENT." In Intelligent Human Systems Integration (IHSI 2024) Integrating People and Intelligent Systems. AHFE International, 2024. http://dx.doi.org/10.54941/ahfe1004502.

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The present work features an analysis of the voltage levels in the Quevedo Sur substation, which has a 7.9 km route of three-phase 4/0 AWG ACSR feeder, where it was found that the voltage levels obtained from the feeder do not allow the proper functioning of the triphasic motors that contain the pumping machines used in the irrigation area, located in Hacienda JJ. Through the implementation of the DIgSILENT program, the collected data was used, and proceeded with the realization of a single-line diagram, then the percentage of voltage drop that exits in the feeder could be visualize through the simulation of power flow and voltage profile, in turn, the minimum and maximum voltage points were observed along the three-phase line, and the most convenient location for the voltage regulators was estimated by implementing the analytical module called ''Step-Voltage Regulator'', which main function is to verify and correct the voltages that are not in the allowed range according to resolution No. ARCERNNR-017/2020.
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Reports on the topic "Voltage regulators"

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Bernardin, J. D., and E. Bosze. An experimental investigation of a liquid cooling scheme for the low dropout voltage regulators of the multiplicity and vertex detector. Office of Scientific and Technical Information (OSTI), October 1997. http://dx.doi.org/10.2172/563290.

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Divan, Deepak, Rohit Moghe, and Damien Tholomier. Fast Responding Voltage Regulator and Dynamic VAR Compensator. Office of Scientific and Technical Information (OSTI), December 2014. http://dx.doi.org/10.2172/1253158.

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Nagarajan, Adarsh, Michael H. Coddington, David Brown, Sheikh Hassan, Leonardo Franciosa, and Elaine Sison-Lebrilla. Studies on the Effects of High Renewable Penetrations on Driving Point Impedance and Voltage Regulator Performance: National Renewable Energy Laboratory/Sacramento Municipal Utility District Load Tap Changer Driving Point Impedance Project. Office of Scientific and Technical Information (OSTI), January 2018. http://dx.doi.org/10.2172/1417730.

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Chapman and Toema. PR-266-09211-R01 Physics-Based Characterization of Lambda Sensor from Natural Gas Fueled Engines. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), November 2012. http://dx.doi.org/10.55274/r0010022.

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The increasingly strict air emission regulations may require implementing Non-Selective Catalytic Reduction (NSCR) systems as a promising emission control technology for stationary rich burn spark ignition engines. Many recent experimental investigations that used NSCR systems for stationary natural gas fueled engines showed that NSCR systems were unable to consistently control the exhaust emissions level below the compliance limits. Modeling of NSCR components to better understand, and then exploit, the underlying physical processes that occur in the lambda sensor and the catalyst media is now considered an essential step toward improving NSCR system performance. This report focuses on modeling the lambda sensor that provides feedback to the air-to-fuel ratio controller. Correct interpretation of the sensor output signal is necessary to achieve consistently low emissions level. The goal of this modeling study is to improve the understanding of the physical processes that occur within the sensor, investigate the cross-sensitivity of various exhaust gas species on the sensor performance, and finally this model serves as a tool to improve NSCR control strategies. This model simulates the output from a planar switch type lambda sensor. The model consists of three modules. The first module models the multi-component mass transport through the sensor protective layer. The second module includes all the surface catalytic reactions that take place on the sensor platinum electrodes. The third module is responsible for simulating the reactions that occur on the electrolyte material and determine the sensor output voltage.
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Haddad, J., L. A. Horta Nogueira, Germano Lambert-Torres, and L. E. Borges da Silva. Energy Efficiency and Smart Grids for Low Carbon and Green Growth in Brazil: Knowledge Sharing Forum on Development Experiences: Comparative Experiences of Korea and Latin America and the Caribbean. Inter-American Development Bank, June 2015. http://dx.doi.org/10.18235/0007001.

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The Brazilian continental dimensions and diversified natural resources are proportional to the challenges to develop its infrastructure sustainably and supply proper public services to more than 200 million inhabitants. Energy consumption has doubled since 1990, fostered by economic growth and the expansion of middle class. In this context, promote energy efficiency, in a broad sense, is urgent and rational. Brazil has a relatively long history in promoting energy efficiency at final user level. A landmark of this process is the Brazilian Labeling Program, launched in 1984, as direct consequence of high prices of energy at that time. This program was coordinated by the National Institute of Metrology, Standardization and Industrial Quality, which sets standards for evaluation, ranks the performance of energy equipment and imposes a classificatory labeling to inform consumers, with a label similar to other countries. The National Electricity Conservation Program was created in 1985 by MME and is executed by ELETROBRÁS. The energy saving induced by this program in 2013 is equivalent to 2.1% of the total electric energy consumption in the period, corresponding to the annual energy consumption of about 5 million Brazilian households. In 2001, Federal Law 10,295, also known as the Energy Efficiency Law, was approved to reinforce those energy efficiency programs, allowing the Brazilian government to establish Minimum Energy Performance Standards for appliances and energy equipment, prohibiting the commercialization of low efficiency models and promoting the progressive withdrawal of low-efficiency models. According to the National Energy Plan 2030, up to 15.5 GW of electricity generation could be saved as a result of energy efficiency in the next 20 years. The Smart Grids, adopting modern technologies in electricity distribution has been proposed in Brazil improve the quality provided in the low voltage service, reduce losses, and reduce operating costs, among others. Several regulations related to this subject, dealing with grid connection for distributed small-scale generation, the establishment of the 'hourly tariff', with the regulation of the use of PLC; and with the compulsory use of Geographic Information System. Currently, dozens pilot projects on Smart Grids are underway in the country. Two projects are presented in detail: CEMIG and AES Eletropaulo, two Brazilian power utilities.
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Drive modelling and performance estimation of IPM motor using SVPWM and Six-step Control Strategy. SAE International, April 2021. http://dx.doi.org/10.4271/2021-01-0775.

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This paper presents a comprehensive evaluation of the performance of an interior permanent magnet (IPM) traction motor drive, and analyses the impact of different modulation techniques. The most widely used modulation methods in traction motor drives are Space vector modulation (SVPWM), over-modulation, and six-step modulation have been implemented. A two-dimensional electromagnetic finite element model of the motor is co-simulated with a dynamic model of a field-oriented control (FOC) circuit. For accurate tuning of the current controllers, extended complex vector synchronous frame current regulators are employed. The DC-link voltage utilization, harmonics in the output waveforms, torque ripple, iron losses, and AC copper losses are calculated and compared with sinusoidal excitation. Overall, it is concluded that the selection of modulation technique is related to the operating condition and motor speed, and a smooth transition between different modulation techniques is essential to achieve a better performance.
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