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Journal articles on the topic 'Static power converters'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Hassan, Raaed Faleh, and Suha Sabah Shyaa. "Design and Analysis of the STATCOM Based on Diode Clamped Multilevel Converter Using Model Predictive Current Control Strategy." European Journal of Electrical Engineering 23, no. 3 (June 21, 2021): 221–28. http://dx.doi.org/10.18280/ejee.230306.

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In recent decades, multi-level converters have become popular and used in many power systems applications. Compared with conventional converters, multi-level converters contribute to reducing the voltage stress on the switching devices and enhancing the power quality delivered to the load. In this paper, the study of the five-level diode clamped multilevel converter based static synchronous compensator has been accomplished. Model Predictive current control strategy which a type of modern control algorithms was employed for driving the proposed compensator. The suggested five level converter controlled by model predictive current control is firstly examined to verify that this control algorithm is appropriate for achieving the desired performance. Then the proposed converter and control combination is employed and simulated as a static synchronous compensator in distributed power system. Moreover, in order to examine the robustness of this compensator, the load status is suggested to be heavy inductive. Simulation process has been performed using MATLAB – SIMULINK software package. The results show that the implemented configuration (converter and control algorithm) provides high power quality improvement with adequate reactive power compensation.

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2

Stabile, Antonino, Chiara Boccaletti, and Antonio J. Marques Cardoso. "A Power Loss Measurement Method Applied to Static Power Converters." IEEE Transactions on Instrumentation and Measurement 62, no. 2 (February 2013): 344–52. http://dx.doi.org/10.1109/tim.2012.2212606.

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3

Tadakuma, Susumu. "Recent trend on high performance static power converters." IEEJ Transactions on Industry Applications 107, no. 11 (1987): 1306–10. http://dx.doi.org/10.1541/ieejias.107.1306.

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4

Fadli, Ouahiba, Mohamed Lokmane Bendaas, and Rachid Abdessemed. "Fault Diagnosis in Static Converters Used in Induction Heating Systems." International Journal of Power Electronics and Drive Systems (IJPEDS) 9, no. 3 (September 1, 2018): 1051. http://dx.doi.org/10.11591/ijpeds.v9.i3.pp1051-1063.

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This paper presents different techniques on fault diagnosis in static converters used to supply and control induction heating systems. These techniques allow the detection and the location of the failed semiconductor switches. After an overview of the device with its main features in healthy state, we have afterwards focused on the fault detection and diagnosis in three electronic power converters which constitute the power generator of the induction furnace. For uncontrolled three-phase rectifier, three external methods based on the analysis of lines currents are used: Average currents method, Current space vector trajectory, called Current Park’s vector approach and Spectrum analysis. For the buck converter (chopper), analytic redundancy approach, based on the residues calculation, is used. For the series resonant inverter, a simple and efficient method based on the average voltages analysis, allows the detection and the location of the power switch in fault. The obtained simulation results, in Matlab/Simulink, are presented and discussed. They reveal that the proposed diagnostic techniques are of great interest.

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Wang, Dian Long, Zhi Yang Zhang, and Shu Qi Liu. "Analysis on some Key Problems of High Power DCDC Converter for Fuel Cell Electrical Bus." Advanced Materials Research 860-863 (December 2013): 839–42. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.839.

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The significance of researching on fuel cell electrical vehicle (FCEV) DC/DC converter, FCEV driving system structure and requirement with DC/DC converter are introduced firstly. Some key problems of development in FCEV DC/DC converter are particularly analyzed, including of reliability, efficiency, static and dynamic characteristic, etc. The average efficiency of boost or buck circuit can reach more than 95%. The dynamic response time of DC/DC converter is below 160 ms. All kinds of DC/DC converters operate with zero error, and various technical indicators can satisfy the operating requirement. The converters are successfully used in china fuel cell city buses and technical indexes are fulfilled.

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6

Bonert, R. "A laboratory for power systems control with static converters." IEEE Transactions on Power Systems 13, no. 1 (1998): 15–20. http://dx.doi.org/10.1109/59.651607.

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Balan, Horia, Maria Buzdugan, I. Vadan, E. Simion, and P. Karaissas. "Hybrid Commutation Converter in HVDC Systems." Materials Science Forum 670 (December 2010): 415–24. http://dx.doi.org/10.4028/www.scientific.net/msf.670.415.

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This paper deals with DC – AC static converter systems, of very high voltages and currents, used for electricity power transmission. It has been analyzed three types of converters: with forced commutation, with commutation from load and the solution proposed by the authors. There are shown the advantages in hybrid switching converters, which in essence connect, constructive and as principle of operation, the advantages of the two known conversion systems. The analysis of the benefits of the proposed solution is done by comparing the circulating power of assets and also by analyzing the power factor. Not in the last, must be mentioned the paper contribution to the development of the theoretical base design for switching converters with hybrid commutation.

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SKOROKHOD, Yury Yu, and Sehgey I. VOL’SKIY. "An Analysis of On-Bord High-Voltage Converters of Single-Phase Alternating Current with Increased Miroelectric Power Factor." Elektrichestvo 10, no. 10 (2020): 44–51. http://dx.doi.org/10.24160/0013-5380-2020-10-44-51.

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The power circuit arrangements of on-board high-voltage static converters fed from a 3000 V AC single-phase network that in the general case produce multi-channel AC and DC output voltages are considered. The basic technical requirements posed to such converters are formulated. The general structural diagram of high-voltage converters with improved electric power consumption quality is given. Possible power circuit arrangements for the high-voltage converter input unit based on single-phase input current correction devices are considered. A classification and criteria for comparative evaluation of the possible power circuit arrangements of these devices are proposed. The information presented in the article will be of interest for specialists engaged in designing on-board electrical systems involving high-voltage converters that must comply with strict requirements for the quality of consumed single-phase input current.

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Chung, P. D. "Evaluation of Reactive Power Support Capability of Wind Turbines." Engineering, Technology & Applied Science Research 10, no. 1 (February 3, 2020): 5211–16. http://dx.doi.org/10.48084/etasr.3260.

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Reactive power plays an important role in the operation of power systems, especially in the case of wind energy integration. This paper aims to evaluate the reactive power support capability of wind turbines in both normal and voltage sag conditions. The three 2MW wind turbines studied are a fixed speed wind turbine and two variable speed wind turbines with full-scale and power-scale power converters. Comparison results indicate that at normal operation, the fixed speed wind turbine with a static synchronous compensator is able to consume the highest reactive power, while the variable speed wind turbine with full-scale power converter can supply the highest reactive power. In case of low voltage, the fixed speed wind turbine with the static synchronous compensator can support the highest reactive power if the static synchronous compensator’s capacity is similar to the wind turbine’s capacity, while if its capacity is equal to 25% of the generator’s capacity, the variable speed wind turbine with full-scale power converter has the best performance.

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10

ChunXiang, Huang, Henadiy Pavlov, Mykhailo Pokrovskyi, Andriy Obrubov, and Iryna Vinnychenko. "DEVELOPMENT OF A FAST WIRELESS BATTERY CHARGING TECHNOLOGY FOR ACCUMULATORS USED IN CLEAN ENERGY TRANSPORT VEHICLES. STATIC CHARACTERISTICS OF A SERIES-TO-SERIES RESONANT CONVERTER FOR CONTACTLESS INDUCTIVE ENERGY TRANSMISSION." Science Journal Innovation Technologies Transfer, no. 2019-4 (September 1, 2019): 56–61. http://dx.doi.org/10.36381/iamsti.4.2019.56-61.

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The research object is the electromagnetic processes in the semiconductor power converters based on the schemes with circuit commutation and containing resonant circuits of reactive elements and transformers with a small coupling coefficient. The research aim is to develop a technology for a fast wireless battery charging for the use in clean energy vehicles, which would be based on a resonant converter with a pulse-count adjustment with a phase shift control. The latter provides a high energy performance in a wide range of regulation and a low sensitivity to changes in the magnetic system parameters. This is a final report. The report presents the results of the work performed in accordance with the Terms of Reference for the second stage of the scientific and research work. The following theoretical problems have been solved: development of a mathematical model of a series resonant converter with a pulse-count adjustment for contactless inductive energy transmission, which provided a high accuracy for the studies of the electromagnetic processes in the power section of multi-circuit resonant converters for contactless energy transmission, as well as an opportunity to assess the energy parameters of multi-circuit converters at pulse-count adjustment; compilation of mathematical dependencies of the average input and output current values on the number of half-cycles of resonant oscillations during energy transmission to the circuit and energy dissipation, the supply voltage and the resonant circuit’s parameters, which allowed assessing the converter’s energy parameters over a wide control range; compilation of the dependencies of the converter’s output power and coefficient of efficiency on the number of halfcycles of resonant oscillations during energy transmission to the circuit and energy dissipation, on supply voltage and on the resonant circuit’s parameters, which made it possible to evaluate the efficiency of the pulse-count adjustment of resonant converters for contactless energy transmission; realization of a dynamic model of a resonant converter for contactless energy transmission in the form of transfer functions for small disturbances caused by fluctuations in supply voltage, which made it possible to estimate the effect of its instability on the quality of output current stabilization.

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11

Khaychenko, I. A., V. V. Babenko, Yu V. Nefedov, and Anh Tu Ha. "Algorithm for reducing additional losses in asynchronous electric drives in plants with static power regulators." Proceedings of Tomsk State University of Control Systems and Radioelectronics 23, no. 4 (December 25, 2020): 93–98. http://dx.doi.org/10.21293/1818-0442-2020-23-4-93-98.

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The ways to reduce losses of electrical energy in power supply systems of industrial enterprises containing powerful semiconductor converters and asynchronous motors are considered. The source of additional electric power losses related to subharmonic nature of voltage fluctuations from operation of converters using the principle of frequency-pulse control is determined. The operation algorithm for thyristor switches of semiconductor converters is proposed, that provides reduction of electric power losses in asynchronous motors connected in parallel with powerful converters. The voltage graphs and currents of simulation model in operation modes of converters show the potential to increase energy efficiency of operation of a wide range of industrial objects with asynchronous motors, connected in parallel and having cyclically changing load.

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12

Putilin, Konstantin, Anna Pronina, and Yulia Mayorova. "Incremental Losses in Autonomous Power Supply Systems with Static Converters." Известия высших учебных заведений. Электромеханика 62, no. 1 (2019): 106–12. http://dx.doi.org/10.17213/0136-3360-2019-1-106-112.

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13

Montanari, Gian Carlo, and Mauro Loggini. "Voltage-Distortion Compensation in Electrical Plants Supplying Static Power Converters." IEEE Transactions on Industry Applications IA-23, no. 1 (January 1987): 181–88. http://dx.doi.org/10.1109/tia.1987.4504884.

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14

Szcześniak, Paweł. "Comparison of control methods for a dynamic voltage restorer using a three-phase matrix converter." SIMULATION 92, no. 12 (October 14, 2016): 1053–63. http://dx.doi.org/10.1177/0037549716673203.

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A dynamic voltage restorer (DVR) is used in a power distribution system to protect sensitive loads against voltage disturbances. The commonly used DVR system contains a converter with direct current (DC) link and energy storage elements. The DC energy storage part of the system is the most expensive element and has a large value. As an alternative, therefore, DVR systems can use alternating current AC/AC converters without DC energy storage. This paper presents the properties of a DVR system based on a direct matrix converter using three control methods: in-phase, pre-sag, and energy-optimal. The paper defines basic mathematical relationships and static characteristics and describes the range of voltage compensation by use of the described compensation methods. Simulation results are obtained and presented in order to verify the correctness of the compensation. The features of such a DVR system configuration are considered in the context of alternative applications for commonly used converters with DC-link energy storage power converters. Application of the matrix converter in electrical power systems is still not very popular, due to limited output voltage and the complex structure and process control. This article is an attempt to show the usefulness of the matrix converter in spite of its limitations and the complexity of the design.

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15

Ichikawa, Fumitoshi. "Static Var Compensator using Large Capacity Self-Commutated Converters (Self-Commutated converter Compensator)." IEEJ Transactions on Power and Energy 112, no. 6 (1992): 461–64. http://dx.doi.org/10.1541/ieejpes1990.112.6_461.

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16

Sobol, A. N., A. V. Bogdan, A. E. Uskov, and E. A. Denisenko. "Methodology for simplified calculation of filter parameters of static power converters." IOP Conference Series: Earth and Environmental Science 488 (May 28, 2020): 012040. http://dx.doi.org/10.1088/1755-1315/488/1/012040.

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17

Altinoz, O. Tolga, and Hamit Erdem. "Particle swarm optimisation-based PID controller tuning for static power converters." International Journal of Power Electronics 7, no. 1/2 (2015): 16. http://dx.doi.org/10.1504/ijpelec.2015.071197.

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18

Marroqui, David, Ausias Garrigós, Cristian Torres, Carlos Orts, Jose M. Blanes, and Roberto Gutierrez. "Interleaved, Switched Inductor and High-Gain Wide Bandgap Based Boost Converter Proposal." Energies 14, no. 4 (February 3, 2021): 800. http://dx.doi.org/10.3390/en14040800.

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Many applications (electric vehicles, renewable energies, low-voltage DC grids) require simple, high-power density and low-current ripple-boost converters. Traditional step-up converters are limited when large transformation ratios are involved. In this work is proposed a step-up converter that brings together the characteristics of high gain, low ripple, and high-power density. From the converter proposal, a mathematical analysis of its operation is first performed, including its static transfer function, stress of components, and voltage and current ripples. Furthermore, it provides a design example for an application of Vin = 48 V to Vo = 270 V and 500 W. For its implementation, two different wide bandgap (WBG) semiconductor models have been used, hybrid GaN cascodes and SiC MOSFETs. Finally, the experimental results of the produced prototypes are shown, and the results are discussed.

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Kesucz, Flaviu-Nicolae. "Theoretical and experimental aspects of the controlled movement of solenoid actuators by means of the voltage static converter with logic gates." Carpathian Journal of Electronic and Computer Engineering 13, no. 2 (December 1, 2020): 22–29. http://dx.doi.org/10.2478/cjece-2020-0010.

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Abstract The purpose of the scientific research in this paper is to control the movement of electromechanical actuators, through a new voltage convertor. The optimization of the system consists in finding new solutions to control the movement of electromechanical actuators in the gas valve, used in thermal power plants, which can be operated by static converters - with logic gates.

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20

Larouci, Cherif, Kamal Ejjabraoui, Pierre Lefranc, and Claude Marchand. "Placement Optimization of Power Components in Static Power Converters under Spatial and Thermal Constraints." Journal of Power Electronics 12, no. 2 (March 20, 2012): 368–76. http://dx.doi.org/10.6113/jpe.2012.12.2.368.

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21

Vogel, Steffen, Ha Thi Nguyen, Marija Stevic, Tue Vissing Jensen, Kai Heussen, Vetrivel Subramaniam Rajkumar, and Antonello Monti. "Distributed Power Hardware-in-the-Loop Testing Using a Grid-Forming Converter as Power Interface." Energies 13, no. 15 (July 22, 2020): 3770. http://dx.doi.org/10.3390/en13153770.

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This paper presents an approach to extend the capabilities of smart grid laboratories through the concept of Power Hardware-in-the-Loop (PHiL) testing by re-purposing existing grid-forming converters. A simple and cost-effective power interface, paired with a remotely located Digital Real-time Simulator (DRTS), facilitates Geographically Distributed Power Hardware Loop (GD-PHiL) in a quasi-static operating regime. In this study, a DRTS simulator was interfaced via the public internet with a grid-forming ship-to-shore converter located in a smart-grid testing laboratory, approximately 40 km away from the simulator. A case study based on the IEEE 13-bus distribution network, an on-load-tap-changer (OLTC) controller and a controllable load in the laboratory demonstrated the feasibility of such a setup. A simple compensation method applicable to this multi-rate setup is proposed and evaluated. Experimental results indicate that this compensation method significantly enhances the voltage response, whereas the conservation of energy at the coupling point still poses a challenge. Findings also show that, due to inherent limitations of the converter’s Modbus interface, a separate measurement setup is preferable. This can help achieve higher measurement fidelity, while simultaneously increasing the loop rate of the PHiL setup.

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Tran, Le Nhat Hoang, Laurent Gerbaud, Nicolas Retière, and Hieu Nguyen Huu. "Use of SQP optimization algorithm to size a multiphysical system." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 37, no. 2 (March 5, 2018): 661–80. http://dx.doi.org/10.1108/compel-12-2016-0519.

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PurposeStatic converters generate current harmonics in power grids. For numerous studies, analytical frequency modeling is preferred to carry out their harmonic modeling in the context of sizing by optimization. However, a design by optimization has to consider other constraints, e.g. modeling constraints and operating constraints. In this way, this paper aims to focus on applying an analytical frequency modeling on the sizing by optimization of an aircraft electrical power channel. Design/methodology/approachThe paper aims to size a multiphysical system by optimization. In this way, the sizing of an aircraft electrical power channel by optimization has been carried out. The models of all the channel components are analytical. Specifically, the frequency model of the power electronics is based on Tran et al. (2016) and is made of equalities and inequalities. Due to this modeling choice, the optimization satisfies hundreds of constraints, such as modeling constraints and static converter operating constraints. Furthermore, transient constraints are only verified after optimization. FindingsThe difficulty is the modeling of the system by taking into account nonlinear implicit equations having several solutions. A solution is the addition of inequality constraints to the model to guide the implicit solving. Furthermore, this greatly helps the optimization algorithm to find the good operating mode of the static converter, at steady state. This aspect is indispensable to validate the sizing model. Research limitations/implicationsThe number of the configurations per operating period of the static converters is defined a priori and limited. Originality/valueThe analytical model for the sizing is formulated as a constrained optimization problem. Its solving and the sizing by optimization are carried out by the same optimization algorithm.

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Nerubatskyi, V. P., O. A. Plakhtii, D. V. Tugay, and D. A. Hordiienko. "Method for optimization of switching frequency in frequency converters." Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, no. 1 (2021): 103–10. http://dx.doi.org/10.33271/nvngu/2021-1/103.

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Purpose. To present a methodology for determining the optimal switching frequency in frequency converters and autonomous voltage inverters, the load of which is an asynchronous electric motor. The methodology is based on determining the dependences of static and dynamic power losses in the power switches of the inverter on the switching frequency and the dependence of power losses in the windings of an induction motor on the higher harmonics of currents, which also depend on the switching frequency. Methodology. Polynomial approximation of the energy characteristics of power transistors. General provisions of the theory of electrical circuits. The determination of additional power losses in the windings of an induction motor from higher harmonics is based on analytical calculation and simulation in the Matlab/Simulink software environment and a specialized program from the manufacturer of power switches Mitsubishi MelcoSim5.1. Findings. A method for optimizing the frequency of pulse-width modulation in frequency converters, the load of which is an asynchronous motor, is presented according to the criterion of the minimum total power losses in the power transistors of the inverter and the resistance of the motor windings. The proposed calculation technique allows determining the dependence of static and dynamic losses in power IGBT-transistors with a sufficiently high accuracy while being in the MelcoSim software environment. To calculate the losses in the motor, it is shown that the switching frequency of the power switches affects the harmonic distortion factor and the average value of the phase current of the induction motor. Provided that only the first harmonic of the current performs the useful action in an asynchronous motor, the dependence of additional power losses on the switching frequency is given. Originality. A method for optimizing the frequency of pulse-width modulation by the criterion of minimum additional power losses in the resistance of the motor windings from higher harmonics of the current and static and dynamic losses in the power transistors of the inverter is presented. An analytical dependence of additional power losses in the active resistance of the windings of induction motors as a function of the harmonic distortion factor of the phase current of an autonomous voltage inverter is presented. Practical value. The presented technique makes it possible to determine the optimal modulation frequency in frequency converters with asynchronous motors and to ensure the minimum total power losses and the maximum value of efficiency in the autonomous voltage inverter asynchronous motor system.

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24

Barcellona, Simone, Marzio Barresi, and Luigi Piegari. "MMC-Based PV Single-Phase System with Distributed MPPT." Energies 13, no. 15 (August 1, 2020): 3964. http://dx.doi.org/10.3390/en13153964.

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The presence and evolution of static power converters in electric grids are growing on a daily basis. Starting from the most used voltage source converter (VSC), passing through the use of multilevel converters, the most recent configuration is the so-called modular multilevel converter (MMC). Because of its intrinsic advantages, it is used not only in high-voltage systems but also in low- and medium-voltage ones to interface renewable energy sources such as photovoltaic (PV) panels. Several configurations and maximum power point tracker (MPPT) algorithms have been proposed and analyzed for MMC-PV-based systems. However, when using distributed MPPTs, partial shading conditions cause a problem. The PV panel can be directly connected to the MMC using its dc link or submodule. Based on this configuration, this paper proposes a novel control strategy that tracks both the ac grid current and ac circulating current for a single-phase low-voltage system to obtain the maximum power under any irradiance condition. The effectiveness of the proposed control strategy is demonstrated through time-domain simulation results.

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25

Hammond, P. W. "A harmonic filter installation to reduce voltage distortion from static power converters." IEEE Transactions on Industry Applications 24, no. 1 (1988): 53–58. http://dx.doi.org/10.1109/28.87250.

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26

El-Genk, Mohamed S., and Jean-Michel P. Tournier. "AMTEC/TE static converters for high energy utilization, small nuclear power plants." Energy Conversion and Management 45, no. 4 (March 2004): 511–35. http://dx.doi.org/10.1016/s0196-8904(03)00159-6.

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27

Bowes, S. R. "Advanced regular-sampled PWM control techniques for drives and static power converters." IEEE Transactions on Industrial Electronics 42, no. 4 (1995): 367–73. http://dx.doi.org/10.1109/41.402475.

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28

Moghaddam, Majid, Mohammad Hossein Moaiyeri, Mohammad Eshghi, and Ali Jalali. "A Low-Power Multiplier Using an Efficient Single-Supply Voltage Level Converter." Journal of Circuits, Systems and Computers 24, no. 08 (August 12, 2015): 1550124. http://dx.doi.org/10.1142/s0218126615501248.

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This paper presents a new high-performance and low-power single-supply voltage level converter (SSLC) and a new carry save array multiplier based on clustered-voltage scaling (CVS) technique for ultra-low-power applications. The multiplier operates with low and high supply voltage (V DDL , V DDH ) and at its end stage, the proposed low-power SSLC is utilized to prevent static power dissipation at the next stage working with V DDH and to enhance the output driving capability. In the proposed SSLC, dynamically-controlled source-body voltage, reduced drain induced barrier lowering (DIBL) effect and diode-connected transistor with body-biasing have been utilized properly in order to reduce the power consumption significantly without considerable speed degradation. The results of the simulations conducted using Cadence with standard 90-nm CMOS technology demonstrate the superiority of the proposed multiplier utilizing the proposed LC in terms of static and total power consumptions as well as power-delay product (PDP) as compared to the multipliers utilizing the previous level converters (LCs) and the single supply multiplier. It is worth mentioning that the static power, total power and PDP of the proposed low-power multiplier are on average 75%, 73% and 16%, respectively lower than the single-supply multiplier.

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Sarala, P., S. F. Kodad, and B. Sarvesh. "Power Factor Correction with Current Controlled Buck Converter for BLDC Motor Drive." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 2 (June 1, 2017): 730. http://dx.doi.org/10.11591/ijpeds.v8.i2.pp730-738.

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Brushless DC motor is a synchronous machine that makes use of electronic commutation instead of mechanical commutator. Brushless DC motors makes use of inverter encompassing static switches for its operation. A simple bridge converter when used for BLDC drive as front end converter makes input source power factor to get reduced which is unacceptable in the power system. To avoid the distortions in the source voltage and source currents, Buck converter which was used as power factor correction (PFC) converter in this paper to improve the power factor. Presence of power electronic converters deteriorates system power factor effecting overall system performance. This paper presents buck converter for power factor correction in brushless DC motor drive system. Buck converter is operated with current control strategy rather to conventional voltage follower control. Simulation model was obtained using MATLAB/SIMULINK software and the brushless DC motor performance characteristics were shown for conditions with different DC link voltages and step variation in DC link voltage. Total harmonic distortion in source current was also presented.

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Kannan, Nithiyananthan, Nithiyananthan Kannan, and Sunil Thomas. "MATLAB/Simulink based simulations of KY converter for PV panels powered LED lighting system." International Journal of Power Electronics and Drive Systems (IJPEDS) 10, no. 4 (December 1, 2019): 1885. http://dx.doi.org/10.11591/ijpeds.v10.i4.pp1885-1893.

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<p>The main objective of this research work is to develop KY conveter topology for renewable energy sources.Solar energy is the readily available and is the cheapest form of energy. It is non-polluting and environment friendly. The development of high static gain DC-DC converters is an important research area due to the crescent demand of this technology for several applications supplied by low DC output voltage power sources. It is used to provide the uninterruptable power supply and battery powered to the system. So here, step-up DC-DC converters based on the KY converter are proposed for LED lighting systems. The proposed topologies present high voltages and high efficiency for low input voltage and high output voltage applications. The simulation results of the proposed topology have been presented using MATLAB/SIMULINK software.</p>

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Zhang, Guang Ru, Dong Sheng Yang, Ting Liu, Jun Yan Zeng, and Yu Kun Xu. "Grid-Connected of Photovoltaic Module Using Inverse Optimal Control." Advanced Materials Research 765-767 (September 2013): 1834–39. http://dx.doi.org/10.4028/www.scientific.net/amr.765-767.1834.

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Switching converters and photovoltaic panels are nonlinear models, but existing PV inverter control methods are mostly based on the linearization control methods. The traditional linear methods are often difficult to eliminate static errors and the dynamic responses are not very satisfactory. In this paper, on the basis of nonlinear methods to control the switching converter, a mathematical model of discrete rotating coordinate system is given and an inverse optimal control method for single-phase grid-connected inverter control is proposed at the same time. This method achieved independent power control purposes due to implementing active and reactive power decomposition; and it is easier to use a microcontroller digital implementation for the discrete method. Simulation results show that this method can eliminate the static errors, and have a good dynamic response.

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Phan, Binh Thi Thanh, Thao Thi Thu Huynh, and Au Ngoc Nguyen. "Static analysis of voltage stability with DFIG." Science and Technology Development Journal 19, no. 3 (September 30, 2016): 5–12. http://dx.doi.org/10.32508/stdj.v19i3.563.

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The static voltage stability analysis is carried out by V-Q sensitivity or Q-V modal analysis. These analyses are based on the Jacobian matrix of power flow calculation. This is regarded as load bus stability analysis. With DFIG of PQ mode, the wind generation bus is considered as the PQ bus. Due to the limits of converters, these PQ buses became very special and this influences on the voltage stability examining. This paper also examines the penetration level and the location of wind generation injection based on voltage stability. The reliability of the algorithm is illustrated in a study of 14 buses power network.

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Abdollahi, Mostafa, Jose Ignacio Candela, Andres Tarraso, Mohamed Atef Elsaharty, and Elyas Rakhshani. "Electromechanical Design of Synchronous Power Controller in Grid Integration of Renewable Power Converters to Support Dynamic Stability." Energies 14, no. 8 (April 10, 2021): 2115. http://dx.doi.org/10.3390/en14082115.

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Nowadays, modern power converters installed in renewable power plants can provide flexible electromechanical characteristics that rely on the developed control technologies such as Synchronous Power Controller (SPC). Since high renewable penetrated power grids result in a low-inertia system, this electromechanical characteristic provides support to the dynamic stability of active power and frequency in the power generation area. This goal can be achieved through the proper tuning of virtual electromechanical parameters that are embedded in the control layers of power converters. In this paper, a novel mathematical pattern and strategy have been proposed to adjust dynamic parameters in Renewable Static Synchronous Generators controlled by SPC (RSSG-SPC). A detailed dynamic modeling was obtained for a feasible design of virtual damping coefficient and virtual moment of inertia in the electrometrical control layer of RSSG-SPC’s power converters. Mathematical solutions, modal analysis outcomes, time-domain simulation results, and real-time validations of the test in IEEE-14B benchmark confirm that the proposed method is an effective procedure for the dynamic design of RSSG-SPC to provide these dynamic stability supports in grid connection.

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34

Govindasamy, Sundar, and Ashok Rangaswamy. "Configuration and Digital Simulation of STATCOM utilizing 48-Pulse VSC for Reactive Power Reparation and Potential Reliability." International Journal of Computer Communication and Informatics 2, no. 1 (May 29, 2020): 1–15. http://dx.doi.org/10.34256/ijcci2011.

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This paper analyzes the configuration of Static Synchronous Compensator-STATCOM utilizing 48 pulse voltage source converter for reactive force reparation and voltage adjustment in force framework transmission and dispersion systems alongside the advanced development of the STATCOM utilizing 48 pulse VSC, expecting framework subjected to unsettling disturbances of real and reactive power. The 48 Pulse voltage source converter is composed with the guide of four 3-level voltage source converters exchanging at the major recurrence to create a sinusoidal yield voltage with decreased symphonies substance. The outline and computerized recreation of STATCOM has been executed in the MATLAB/Simulink stage. It is strongly evident that the outcome of reactive power reparation and voltage stabilization have been substantially improved by the proposed STATCOM configuration with 48 pulse VSC.

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Enrique, Juan Manuel, Antonio Javier Barragán, Eladio Durán, and José Manuel Andújar. "Theoretical Assessment of DC/DC Power Converters’ Basic Topologies. A Common Static Model." Applied Sciences 8, no. 1 (December 23, 2017): 19. http://dx.doi.org/10.3390/app8010019.

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36

Imece, A. F., R. A. Jones, T. R. Sims, and C. A. Gross. "An approach for modeling self-commutated static power converters for photovoltaic islanding studies." IEEE Transactions on Energy Conversion 4, no. 3 (1989): 397–401. http://dx.doi.org/10.1109/60.43241.

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MATSUO, H. "Novel Digital Controller with Static Model Reference for Switching DC-DC Power Converters." IEICE Transactions on Communications E88-B, no. 11 (November 1, 2005): 4346–52. http://dx.doi.org/10.1093/ietcom/e88-b.11.4346.

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38

Bowes, S. R. "Novel real-time harmonic minimized PWM control for drives and static power converters." IEEE Transactions on Power Electronics 9, no. 3 (May 1994): 256–62. http://dx.doi.org/10.1109/63.311257.

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Imece, Ali F., Robert A. Jones, Thomas R. Sims, and Charles A. Gross. "An Approach for Modeling Self-Commutated Static Power Converters for Photovoltaic Islanding Studies." IEEE Power Engineering Review 9, no. 9 (September 1989): 41. http://dx.doi.org/10.1109/mper.1989.4310955.

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40

Hakimzadeh, Mojtaba, Reza Sedaghati, and Masoud Parhoodeh. "Using Hybrid Power Flow Controller (HPFC) to Improve Performance of Old and Existing Compensators in Power System." Advanced Materials Research 622-623 (December 2012): 1048–55. http://dx.doi.org/10.4028/www.scientific.net/amr.622-623.1048.

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In this paper, a hybrid topology of FACTS devices has been investigated to improve stability features of static voltage. The primary assumption is a power system which has been located under SVC parallel compensation. HPFC forms a hybrid controller using IPFC series converters as a hybrid with existing parallel and passive compensator (SVC) in power system. Thus, simultaneous and independent control of active power flow can be reached through transmission lines and the exchanged reactive power values towards sending and receiving line. Using a hybrid structure makes the use of convertors to improve performance of the old and existing compensators in the power system possible. In this study, the power injection model (PIM) has been used to model series-parallel parts of hybrid power flow controller in Newton-Raphson load flow, and all have been simulated in M-file environment of MATLAB software. In order to investigate the effect of this controller on stability properties of static voltage, P-V curve of PQ buses of a prototype system has been evaluated in a continuous power flow (CPF) in M-file environment of MATLAB software. In the section of simulation results, SVC parallel compensation and UPFC series-parallel compensation are compared in terms of the amount of losses, active and reactive power, and improvement of the system’s loading limit with the proposed hybrid structure.

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41

Afanasov, Andriy, Oleksandr Shapovalov, and Maryna Voitenko. "Systems mutual loadings of traction asynchronous cars." MATEC Web of Conferences 294 (2019): 05009. http://dx.doi.org/10.1051/matecconf/201929405009.

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The review of methods of post-repair tests of traction asynchronous motors under conditions of locomotive depot is carried out.The necessity of introducing special stands for post-repair tests is shown in order to improve their quality, reduce the number of failures of service equipment, improve safety of the railway transport. Let’s consider a question of power supply of the research asynchronous engine in wide frequency range and also a possibility of creation of the universal stand for testing important asynchronous engines of the electrorolling stock. Survey of possible versions of the scheme mutual loadings of asynchronous electrical machines which can be used for testing traction asynchronous engines of the rolling stock is executed. Such systems can be constructed both with use of the static converter of frequency, and without it. The given short characteristic of each alternative, certain advantages and shortcomings of each of system options. It is shown that systems with use of static converters of frequency differ in high power efficiency, allow to carry out tests in the wide frequency range of power supply, however have higher prime cost. Schemes without converters of frequency differ in smaller power efficiency, impossibility to carry out tests in the wide range of frequency of power supply, high level of consumption of reactive power . The results of the carried-out analysis can be used when choosing rational option of a system mutual loadings of asynchronous electric motors which will differ in higher functionality and power efficiency. Use of such systems will allow to lower capital expenditure for creation new and modernization of traction electrical machines that exist at the station for test.

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Diab, Ahmed A. Zaki, Terad Ebraheem, Raseel Aljendy, Hamdy M. Sultan, and Ziad M. Ali. "Optimal Design and Control of MMC STATCOM for Improving Power Quality Indicators." Applied Sciences 10, no. 7 (April 4, 2020): 2490. http://dx.doi.org/10.3390/app10072490.

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In recent years, modular multilevel converters (MMC) are becoming popular in the distribution and transmission of electrical systems. The multilevel converter suffers from circulating current within the converter that increases the conduction loss of switches and increases the thermal stress on the capacitors and switches’ IGBTs. One of the main solutions to control the circulating current is to keep the capacitor voltage balanced in the MMC. In this paper, a new hybrid control algorithm for the cascaded modular multilevel converter is presented. The Harris hawk’s optimization (HHO) and Atom search optimization (ASO) are used to optimally design the controller of the hybrid MMC. The proposed structure of modular multilevel inverters allows effective operation, a low level of harmonic distortion in the absence of output voltage filters, a low switching frequency, and excellent flexibility to achieve the requirements of any voltage level. The effectiveness of the proposed controller and the multilevel converter has been verified through testing with the application of the MMC-static synchronous compensator (STATCOM). The stability of the voltage capacitors was monitored with balanced and unbalanced loads on the studied network.

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Heidari, Mahdi, Abdonnabi Kovsarian, and S. GHodratollah Seifossadat. "POWER QUALITY IMPROVEMENT WITH CASCADED MULTILEVEL CONVERTER BASED STATCOM." IIUM Engineering Journal 19, no. 1 (June 1, 2018): 91–103. http://dx.doi.org/10.31436/iiumej.v19i1.873.

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Static synchronous compensators (STATCOM) are increasingly implemented in power systems. Moreover, cascaded multilevel converters (CMC) are more frequently taken in consideration because of their strong capabilities. In this paper, the design and simulation of a multilevel STATCOM for voltage regulation of load is presented. Design of the passive components, active and reactive power controller, and balancer of capacitor voltage are parts of proposed system design. The pole placement method was used for the design of the controller. Simulation results with MATLAB/SIMULINK show good performance of voltage regulation in full load and dynamic load conditions. ABSTRAK: Penyelaras pengimbang statik (STATCOM) semakin dilaksanakan dalam sistem kuasa. Selain itu, penukar pelbagai aras tingkatan (CMC) lebih diutamakan kerana mempunyai banyak kelebihan. Dalam kajian ini, reka bentuk dan simulasi bertingkat STATCOM bagi pelbagai voltan beban dibentangkan. Reka bentuk komponen pasif, penyelenggara kuasa aktif dan reaktif dan pengimbang voltan kapasitor adalah sebahagian daripada sistem yang dicadangkan. Bagi reka bentuk penyelenggara, kaedah penempatan titik telah digunakan. Hasil simulasi melalui MATLAB/SIMULINK menunjukkan keputusan yang baik pada regulasi voltan pada beban penuh dan pada keadaan beban dinamik.

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Бурков, А. Ф., В. В. Миханошин, and В. Х. Нгуен. "Электрохимические источники энергии для судовых комбинированных гребных электрических установок." ТЕНДЕНЦИИ РАЗВИТИЯ НАУКИ И ОБРАЗОВАНИЯ 70, no. 2 (2021): 97–100. http://dx.doi.org/10.18411/lj-02-2021-63.

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At the present stage of development of marine propulsion systems for coastal navigation vessels, it seems appropriate to use combined power installations with various scientific and technical solutions. The primary sources of such installations, along with electromechanical converters, include electrochemical static energy sources – batteries. The specific operating conditions of such sources in ship conditions limit their list for combined installations. The article discusses the varieties of static energy sources, their advantages and disadvantages, which allow us to conclude that it is economically feasible to use them in combined electric power installations.

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Phong, Le Tien, and Ngo Duc Minh. "Application of Sliding Mode Control Technique to Regulate DC/DC Boost Converters in Systems Exploiting Photovoltaic Power Generation." IAES International Journal of Robotics and Automation (IJRA) 7, no. 2 (June 1, 2018): 96. http://dx.doi.org/10.11591/ijra.v7i2.pp96-107.

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<p class="Abstract">This paper introduces a new method, called IB-SMC method, to control DC/DC boost converters in systems exploiting photovoltaic power generation. This method combines the sliding mode control technique and iterative-bisectional technique in the maximum power point tracker to change operations modes of photovoltaic power generation. The IB-SMC controller uses voltage sliding surface to evaluate the relation of instantaneous voltage at the input converter and instantaneous voltage at the maximum power point. Using information about the power of electromagnetic radiation from a pyranometer and temperature from a temperature sensor, the sliding surface and hyteresis band are changed by practically operational conditions that help improving energy efficiency of the process exploiting PVg. Simulations are carried out by Matlab/Simulink that show the ability to ensure dynamic stability by tracking instaneous maximum power point at any time whenever having any change of the operational condition, static stability by maintaining the operation point at maximum power point whenever not have any change of the operational condition and help to bring out approximately absolute energy efficiency.</p>

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46

Sarojini, L., R. Supraja, V. Hamsadhwani, and M. Sathiskumar. "Implementation of Wind Energy System Using Interleaved Boost Converter and Static Synchronous Compensator." Journal of Computational and Theoretical Nanoscience 17, no. 12 (December 1, 2020): 5307–14. http://dx.doi.org/10.1166/jctn.2020.9422.

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Limited fossil fuel resources and current environmental considerations have created wind energy as the best alternative for spotless renewable source of energy, to replace the conventional sources of energy. The Wind power production has quite a few drawbacks owing in the direction of the methods used in harnessing wind energy. This paper focuses on the method that decreases the effect of the voltage variability within the grid initiated through uncontrollable imprudent power flow and the output power fluctuation within the grid. This paper gives solution to diminish the fluctuation that creates unstable voltage across the line by installing such an energy storage device. Reactive power compensation has been mutually implemented to manage the distribution of the reactive power supply across wind farm based power networking through internal Static Synchronous Compensator (STATCOM). Here, bidirectional interleaved DC/DC-converters and double layer electrical capacitors are used. Therefore the introduction of two different systems, the energy storage systems with interleaved boost unit along with the reactive power mitigation for giant wind farms was implemented by integrating them into single system to check and review the wind power plant stability management.

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47

Yaddanapudi, Kiran, and Pannala Krishna Murthy. "Design and Analysis of Shunt Active Power Filter (SAPF) for Non Linear and Unbalanced Loads." International Journal of Engineering and Advanced Technology 10, no. 2 (December 30, 2020): 61–65. http://dx.doi.org/10.35940/ijeat.b2015.1210220.

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Increasing power demand in present situation has to comply with the power generation. Generated power has to meet the quality standards. With the introduction of nonlinear loads like static power converters inject harmonics into the system which effect operation of the system adversely. In order to improve the performance of the system these harmonics are to be mitigated and reactive power need to be compensated. In the proposed work a Shunt Active Power Filter (SAPF) is designed to compensate reactive power and the behavior of the system is analyzed by introducing reverse harmonic current.

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48

Murali, D., and S. Annapurani. "Improvement of Static Voltage Gain of a Non-Isolated Positive Output Single-Switch DC-DC Converter Structure Using a Diode-Capacitor Cell." Mathematical Modelling of Engineering Problems 8, no. 4 (August 31, 2021): 583–90. http://dx.doi.org/10.18280/mmep.080411.

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There are different low switching stress non-isolated DC-DC power converter structures developed for Photo-Voltaic (PV) applications with a view to achieve high voltage conversion ratio. The work proposed in this research article investigates the performance analysis of a coupled inductor and diode-capacitor multiplier cell based non-isolated high gain single-switch DC–DC conversion scheme with a single-ended primary-inductor on the input side. The presented converter suitable for renewable energy applications has the merits such as continuous input current, high voltage conversion ratio, and reduced voltage stress across the power switch. The multiplier cell consisting of two diodes and two capacitors is mainly used to enhance the converter output voltage level. A MATLAB / SIMULINK model of the suggested topology has been developed to validate its performance. During the simulation of the converter, a DC voltage of 50 V was given at the input side. The load end received a DC voltage of approximately 900 V. Thus, through this study, it was found that the addition of diode-capacitor cell can significantly improve the static gain of the suggested converter. The findings of this research may serve as a base for future studies on improvement of voltage gain of DC-DC converters.

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Wang, Y. J., L. Pierrat, and L. Wang. "Summation of harmonic currents produced by AC/DC static power converters with randomly fluctuating loads." IEEE Transactions on Power Delivery 9, no. 2 (April 1994): 1129–35. http://dx.doi.org/10.1109/61.296299.

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Shyh-Jier Huang and Fu-Sheng Pai. "A new approach to islanding detection of dispersed generators with self-commutated static power converters." IEEE Transactions on Power Delivery 15, no. 2 (April 2000): 500–507. http://dx.doi.org/10.1109/61.852975.

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