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Journal articles on the topic 'Voltage improvement'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

K, Sureshkumar, Vasanthamani S, Mariammal M, Raj S, and Vinodkumar R.L. "Power Quality Improvement Using Dynamic Voltage Restorer." Bonfring International Journal of Power Systems and Integrated Circuits 9, no. 1 (2019): 01–04. http://dx.doi.org/10.9756/bijpsic.9002.

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2

Omar. "Voltage Swells Improvement in Low Voltage Network Using Dynamic Voltage Restorer." American Journal of Applied Sciences 8, no. 1 (2011): 55–62. http://dx.doi.org/10.3844/ajassp.2011.55.62.

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3

Pakale, Ankita, and Mukund Mahagaonkar. "Power Quality Improvement by using DVR." Journal of Electrical Engineering and Electronics Design 1, no. 1 (2023): 1–4. http://dx.doi.org/10.48001/joeeed.2023.111-4.

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A power system having three main subsystems such as generation, transmission and distribution. While transmitting the power from generation to end user’s utility has to face power quality issues such as voltage sag, voltage swell, harmonics, transmission losses, transients, voltage fluctuation/ flickering and many more, there are various devices and protecting system exist to improve power quality of the system such as DVR, FACT Devices (STATCOM, UPQU, UPFC, SSSC, TCSC). Problem like voltage sag and voltage swell generally affect to the end user’s equipment’s probably sensitive equipment’s lik

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4

Huaizhi Wu and M. D. F. Wong. "Incremental Improvement of Voltage Assignment." IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems 28, no. 2 (2009): 217–30. http://dx.doi.org/10.1109/tcad.2008.2009155.

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5

Sharma, A. K. "Voltage Enhancement in Distribution System using Voltage Improvement Factor." IOSR Journal of Electrical and Electronics Engineering 7, no. 1 (2013): 46–48. http://dx.doi.org/10.9790/1676-0714648.

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6

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 (2019): 248–56. http://dx.doi.org/10.24151/1561-5405-2019-24-3-248-256.

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Wondie, Tebeje Tesfaw, and Teshome Goa Tella. "Voltage Stability Assessments and Their Improvement Using Optimal Placed Static Synchronous Compensator (STATCOM)." Journal of Electrical and Computer Engineering 2022 (August 23, 2022): 1–12. http://dx.doi.org/10.1155/2022/2071454.

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In this paper, static voltage stability assessments and their improvement using analytical and optimization techniques with different loading scenarios are described. In this study, the 400 kV, 230 kV, and 132 kV Ethiopian electric power networks are modeled using Power System Analysis Toolbox (PSAT), and the load flow analysis is carried out using MATLAB source code. Then, different voltage stability indices, such as the user-defined advanced voltage stability index (AVSI), modified voltage stability index (MVSI), and fast voltage stability index (FVSI), are used to identify the voltage unsta

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Radetić, Radijle, Dragan Milivojević, Marijana Pavlov, and Darko Brodić. "One Way of Output Voltage Hold Circuit Improvement at Low Resistance Comparator." Journal of Electrical Engineering 63, no. 4 (2012): 266–69. http://dx.doi.org/10.2478/v10187-012-0038-2.

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One Way of Output Voltage Hold Circuit Improvement at Low Resistance Comparator The article presents a way of improvement the important performances of an electronic low resistance comparator. The practical usage of a realized instrument prototype shows some disadvantages: the time until the result appears at the display is to long (the stationary state establishing sequence should be shorter) because of the negative influence of parasitic voltages. Modification of output voltage hold circuit gives quite convenient instrument response time. The parasitic voltage disturbance is decreased to acc

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Popovic, Dragan, and Milos Stojkovic. "An efficient generator voltages control method for improvement of voltage-reactive states in transmission network." Facta universitatis - series: Electronics and Energetics 21, no. 2 (2008): 221–32. http://dx.doi.org/10.2298/fuee0802221p.

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This paper presents an efficient generator voltage control method for improvement of voltage-reactive states in transmission networks. This method enables fast and sufficiently accurate definition of generator voltages to realize the favorable voltage-reactive states. In peak load state, this generator voltage control is made to improve the economic operation, e.g. to reduce the active and reactive power losses or to enlarge the reactive reserve of generators. In minimum load state, this voltage control is made to reduce the generator under-excitation states, or to make the favorable redistrib

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Adikaibe, James, Engr. F. O. Enemuoh Prof., and Jachimma Aghara. "Application of Unified Power Flow Controller in Nigeria Power System for Improvement of Voltage Profile." International Journal of Trend in Scientific Research and Development 3, no. 5 (2019): 1499–506. https://doi.org/10.5281/zenodo.3590991.

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With the increased rate of urbanization and industrialization, the Nigerian electric power system is being put under pressure, high power losses which has led to fluctuation in voltage level. In this work the Nigeria 330Kv network of 42 bus system was considered. Data for the analysis were obtained from Transmission Company of Nigeria National Control Centre, Osogbo TCN and MATLAB PSAT software with newton Raphson's solution method embedded in it was used to carry out the analysis. The results of the analysis showed that many of the bus voltages were outside the voltage limits of ±5

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11

Ahmadreza, Eslami. "Index-based optimal DG allocation for voltage quality improvement in an unbalanced network." Global Journal of Engineering and Technology Advances 6, no. 2 (2021): 090–103. https://doi.org/10.5281/zenodo.4616229.

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Voltage quality is a one of the major concerns in distribution systems. Distributed Generations (DGs) have the potential to improve voltage quality, if optimally planned and operated. Considering the problem of DG siting and sizing, this paper aims at integrating technical factors, particularly voltage quality, in planning of DGs. Hence, a methodology is proposed which optimizes voltage quality in the presence of DGs and can be used as one of the objectives in a multi-objective problem or as an intermediate stage in usual DG planning.  Modified voltage quality indices are proposed which c

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12

Ogunboyo, Patrick Taiwo, Remy Tiako, and Innocent E. Davidson. "Application of Dynamic Voltage Restorer for Power Quality Improvement in Low Voltage Electrical Power Distribution Network: An Overview." International Journal of Engineering Research in Africa 28 (January 2017): 142–56. http://dx.doi.org/10.4028/www.scientific.net/jera.28.142.

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Dynamic Voltage Restorer (DVR) is a series connected power electronics based custom power device that is used to improve voltage disturbances in low voltage electrical power distribution network. Power quality requirement is one of the most important concerns for power system. The parts of the DVR is made up of voltage source inverter, injection/booster transformer, a harmonic filter, an energy storage device and a bypass switch. The DVR is used to inject three phase voltage in series and in synchronism with the network voltages in order to compensate voltage disturbances with a benefit of act

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13

Gencer, Altan. "Analysis and Control of Low-Voltage Ride-Through Capability Improvement for PMSG Based on an NPC Converter Using an Interval Type-2 Fuzzy Logic System." Elektronika ir Elektrotechnika 25, no. 3 (2019): 63–70. http://dx.doi.org/10.5755/j01.eie.25.3.23678.

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Wind farms must be linked to the grid during the voltage sag. Therefore, the improvement of low-voltage ride-through (LVRT) capability of wind turbine (WT) is a vitally issue. Protection system based on an interval type-2 fuzzy logic system (IT-2 FLC) is presented to improvement of LVRT capability of permanent magnet synchronous generator (PMSG) based on WT during the voltage dip. The presented control system prevents the power converters from the damaging effects of over-voltage during LVRT time. In addition to, the proposed protection system based on IT-2 FLC provides constant DC link voltag

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14

Bahamani, Akhib Khan, G. M. Sreerama Reddy, and V. Ganesh. "Voltage Stability Improvement in Fourteen Bus System during Line Interruption using DPFC." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 2 (2017): 705. http://dx.doi.org/10.11591/ijpeds.v8.i2.pp705-711.

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<p>DPFC is proposed in the present work to improve voltage stability of fourteen bus system during line interruption. The voltage across the load decreases due to the interruption of the line. State space method is used to calculate Line currents and bus voltages. The ability of DPFC to bring voltage, real power and reactive power to normal level is presented in this paper. The simulation results for healthy system, line interrupted system without DPFC and with DPFC are presented. The results of comparative study are presented to show the improvement in power quality. The simulation stud

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15

Thentral, T. M. Thamizh, R. Palanisamy, S. Usha, et al. "The Improved Unified Power Quality Conditioner with the Modular Multilevel Converter for Power Quality Improvement." International Transactions on Electrical Energy Systems 2022 (September 29, 2022): 1–15. http://dx.doi.org/10.1155/2022/4129314.

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Nowadays, researchers focus on the modular multilevel converter (MMC), due to its modularity structure, effective sharing of voltages among the submodule switches, and betterment in the quality of the voltage and current waveforms. First, the conventional unified power quality conditioner is developed with two level voltage source converters connected back-to-back, which are proposed to mitigate both the voltage and current related power quality problems. Later, to improve the performances (voltage sag, swell, current harmonics, etc.) of the conventional method, multilevel inverters are used.

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Vadlamudi Naresh, Et al. "Novel DC Capacitor Voltage Balancing Strategy of Modular Multilevel Converter based STATCOM for Reactive Power Compensation and Voltage Improvement." International Journal on Recent and Innovation Trends in Computing and Communication 11, no. 10 (2023): 2602–16. http://dx.doi.org/10.17762/ijritcc.v11i10.10078.

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In recent years, the integration of renewable energy sources and their unpredictable nature has posed significant challenges to power grid stability and voltage regulation. To address these issues, the Modular Multilevel Converter (MMC) based Static Synchronous Compensator (Statcom) has emerged as a promising solution for reactive power compensation and voltage improvement. However, one critical concern in MMC-Statcom operation is the voltage balancing of DC capacitors, which directly affects system performance and efficiency. In this research, a novel DC capacitor voltage balancing strategy i

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17

Ingle, Komal V., and Dr M. G. Unde. "Power Quality Improvement of Micro Grid by Using DVR." International Scientific Journal of Engineering and Management 03, no. 03 (2024): 1–33. http://dx.doi.org/10.55041/isjem01353.

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Power quality is defined as the degree of voltage, current, frequency and waveform of power system under designed specification of the system. While transmitting the power from one end (generation) to another (load) utility has to face some power quality issues such as voltage sag, voltage swell, harmonics, inter-harmonics, voltage imbalance, voltage fluctuation, short duration voltage variation, long duration voltage variation, transient, power frequency variation, waveform distortion etc. These power quality issues directly effect on the efficiency of the power system and performance of the

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18

Kim, Chungyong, and Gyu-Sik Kim. "Improvement of a Radon Counter Sensitivity Using High-Voltage Ion Chamber." International Journal of Trend in Scientific Research and Development Volume-2, Issue-4 (2018): 951–54. http://dx.doi.org/10.31142/ijtsrd14257.

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MAYURI, M. KHADE, D. RANDIVE BHAGYASHREE, D. DHUMAL SHITAL, and S. CHAVAN PREETI. "POWER QUALITY IMPROVEMENT IN DISTRIBUTION SYSTEM USING D-STATCOM." IJIERT - International Journal of Innovations in Engineering Research and Technology NCMTEE-2K18 (March 31, 2018): 50–56. https://doi.org/10.5281/zenodo.1451162.

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<strong><strong> I</strong>n this paper we present DSTATCOM (static synchronous compensator) is a power electronics device using force commutated device like IGBT t o control the reactive power. In power network voltage is stabilise while synchronizing with demand . The D - STATCOM used to mitigate the power quality issues like voltage sag,voltage swell,harmonics and compensat ion the reactive power. In VSC voltage source converter can act as either a source or sink of reactive power. The D - STATCOM has many features such as low power losses,less harmonics production,high regulatory capa

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20

Yen-Nhi Tran Thi, Uyen-Nhi Luu Pham, Vinh-Thanh Tran, and Duc-Tri Do. "A New 3-Phase 2-Level Buck Inverter with Switching Loss Improvement." Journal of Technical Education Science 19, SI02 (2024): 1–13. http://dx.doi.org/10.54644/jte.2024.1428.

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This paper proposes a 3-phase 2-level inverter configuration combined with a buck DC-DC converter to improve the switching loss of semiconductor devices. Compared to the traditional 3-phase 2-level inverter configuration, this configuration can reduce the number of switching times on the inverter side by about 2/3 compared to the sine Pulse Width Modulation technique (sine PWM) and 1/2 compared to the Discontinuous PWM (DPWM). Different from traditional configurations and techniques (DC-link voltage is constant), this configuration controls DC-link voltage to change and equal to the maximum po

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21

Geethika, Kummari, Vinay Kumar Awaar, and Praveen Jugge. "Adoption of Multilevel Inverter based Dynamic Voltage Restorer for Power Quality Improvement with Adjustable DC-Link." E3S Web of Conferences 184 (2020): 01055. http://dx.doi.org/10.1051/e3sconf/202018401055.

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Dynamic Voltage Restorer (DVR) is a method of overcoming voltage sag and swell in electrical power distribution. To boost up voltage levels on load side on power disturbances DVR can be used so as the equipment connected will have good voltage profile In this Pulse Width Modulation inverter is in solid-state electronic switching device were employed along with Integrated Gate Bipolar Transistor by the DVR, the alternating current voltage is controllable at real and reactive powers which are made independently. The MLI; is organized as the cascaded H-bridge inverter units. The function of Multi

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Brzhezytskyi, V., N. Laposha, I. Maslyuchenko, and V. Khominich. "IMPROVEMENT OF HIGH-VOLTAGE GLASS INSULATORS." Scientific Works of National University of Food Technologies 23, no. 6 (2017): 101–11. http://dx.doi.org/10.24263/2225-2924-2017-23-6-14.

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Sweta, Sweta, and Mohamad Samir. "Voltage stability improvement of distributed generation." IOSR Journal of Electrical and Electronics Engineering 9, no. 4 (2014): 16–22. http://dx.doi.org/10.9790/1676-09431622.

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24

Oljaca, Miroslav, and William Klein. "Converter voltage reference performance improvement secrets." IEEE Instrumentation & Measurement Magazine 12, no. 5 (2009): 21–27. http://dx.doi.org/10.1109/mim.2009.5270525.

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L. Bekri, O., and F. Mekri. "Improvement of large power system with facts devices placement to maxim-IZE the system load ability." International Journal of Engineering & Technology 7, no. 2.28 (2018): 381. http://dx.doi.org/10.14419/ijet.v7i2.28.13215.

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Voltage instabilities and/or collapses have been recognized as one of the major causes of power system blackouts. The main objective of this paper is to provide some solutions to prevent large power systems from voltage collapse. The FACTS (Flexible AC Transmission Sys-tems) devices placement gives new opportunities for enhancing voltage stability. The calculation of the loadability point is based on the con-tinuation power flow technique (CPF) to choosing the optimal placement of STATCOM (Static Synchronous Compensator) in order to improve voltage stability by increasing the loading parameter

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Samal, Sarita, and Prakash Kumar Hota. "Power Quality Improvement by Solar Photo-voltaic / Wind Energy Integrated System Using Unified Power Quality Conditioner." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 3 (2017): 1416. http://dx.doi.org/10.11591/ijpeds.v8.i3.pp1416-1426.

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The real problems in diminution of power quality occurs due to the rapid growth of nonlinear load are leads to sudden decrease of source voltage for a few seconds i.e sag, swell, harmonics in source and load current, voltage unbalance etc. All these problems can be compensated by using Unified Power Quality Controller (UPQC) and the operation of UPQC depends upon the available voltage across capacitor present in dc link. If the capacitor voltage is maintained constant then it gives satisfactory performance. The proposed research is basically on designing of Photo Voltaic (PV) /Wind energy fed

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Sayfullin, Rinat N., Ilnar R. Gaskarov, and Nikolay I. Pavlov. "Improvement of electric spark surfacing method." Tekhnicheskiy servis mashin, no. 1 (March 1, 2020): 99–105. http://dx.doi.org/10.22314/2618-8287-2020-58-1-99-105.

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Electric spark treatment of wear-resistant coatings is one of the resource-saving technologies that improve the durability of parts of mechanisms and machines. The limitations of the use of this technology are low performance, non-continuity of the coating, high roughness, as well as limited thickness of the surfaced layer. (Research purpose) The research purpose is to study the effect of additional introduced DC voltage between the electrode and the product, as well as the effect of different brands of electrodes on the thickness of the spark coating. (Materials and methods) Conducted researc

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Pati, Swagat, Kanungo Barada Mohanty, and Sanjeeb Kumar Kar. "Performance improvement of a STATCOM using fuzzy controller for isolated generator." World Journal of Engineering 15, no. 2 (2018): 273–82. http://dx.doi.org/10.1108/wje-06-2017-0149.

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Purpose This paper aims to demonstrate the efficacy of fuzzy logic controller (FLC) over proportional integral (PI) and sliding mode controller (SMC) for maintaining flat voltage profile at the load bus of a single-generator-based micro-grid system using STATCOM. Design/methodology/approach A STATCOM is used to improve the voltage profile of the load bus. The performance of the STATCOM is evaluated by using three different controllers: PI controllers, FLCs and SMCs. The performance comparison of the controllers is done with different dc bus voltages, different load bus voltage references, vari

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Karuppannan, Anand, and Mohanaprasaath S. "Design of Dynamic Voltage Restorer for Power Quality Improvement." Mediterranean Journal of Basic and Applied Sciences 08, no. 02 (2024): 54–62. http://dx.doi.org/10.46382/mjbas.2024.8205.

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Solutions for customers with delicate loads and quick voltage regulation are essential. Protect important loads from supply-side voltage disturbances with a power electronic converter-based Dynamic Voltage Restorer (DVR). In the case of severe sag and swell, DVR is a well-known, low-cost therapy option. On the basis of its maximum voltage injection and active power contribution, a DVR's mitigation ability is determined. Standard DVRs use batteries as their DC input, but batteries are cumbersome, expensive, and hazardous to dispose of after they've been used. This limits compensation for DVRs.

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AL-KARAKCHI, Ahmed. "Dynamic Voltage Restorer for Voltage Unbalance Mitigation and Voltage Profile Improvement in Distribution Network." PRZEGLĄD ELEKTROTECHNICZNY 1, no. 6 (2023): 190–93. http://dx.doi.org/10.15199/48.2023.06.38.

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Kianersi, Hadi, and Hamid Asadi. "Voltage Stability Improvement By Using FACTS Elements With Economic Consideration." Ciência e Natura 37 (December 19, 2015): 162. http://dx.doi.org/10.5902/2179460x20767.

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In last two decades due to increasing power demand power systems are operated to their maximum operation conditions. It will cause to any problems that one of these is voltage instability. To overcome this problem Flexible AC Transmission Systems(FACTS) have been used in power systems. The FACTS devices improves system stability, reduce losses and power generation cost. Best location of FACTS devices will help to maintain bus voltages at desired level, reduce cost of these devices and improve voltage stability margins. This paper presents the methods to location and rating of FACTS devices are

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Volkov, I. V., V. V. Golubev, and V. I. Zozulev. "PRINCIPLES OF IMPROVEMENT OF MULTILEVEL AUTONOMOUS VOLTAGE INVERTERS." Praci Institutu elektrodinamiki Nacionalanoi akademii nauk Ukraini 2021, no. 60 (2021): 58–64. http://dx.doi.org/10.15407/publishing2021.60.058.

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The article considers the properties of the most commonly used two-and multilevel inverter topologies used in systems for converting electricity from several primary power sources into the required high-quality output voltage for low-voltage networks and high-voltage consumers. However, a common disadvantage of most known multilevel converters is the increasing complexity of power structures, an increase in the number of primary power sources, power elements, and the cost of devices as the number of their voltage levels increases. Two schemes of alternative three-level autonomous voltage inver

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Anil, Agrahari, Sagar Shukla Shruti, Shukla Shivam, and Singh Shaurya. "Power quality improvement using dynamic voltage restorer (DVR)." i-manager’s Journal on Electrical Engineering 15, no. 4 (2022): 20. http://dx.doi.org/10.26634/jee.15.4.18700.

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This paper presents power quality issues, and ways to resolve these problems. There are a number of custom power devices which are used to resolve these issues. The Dynamic Voltage Restorer (DVR) is a special device that is used nowadays. To detect the voltage drop system, park transform is utilized and applied to the voltage regulator as a control system function, that detects the voltage amplitude at the sensitive load constantly in DVR (using a three-phase voltage source inverter with voltage loop control (PI)) (Martiningsih & Prakoso, 2018). This paper is about basic working of DVR wit

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Ali, Abdulqadir Rasool, M. Abbas Najimaldin, and Sheikhyounis Kamal. "Determination of optimal size and location of static synchronous compensator for power system bus voltage improvement and loss reduction using whale optimization algorithm." Eastern-European Journal of Enterprise Technologies 1, no. 8(115) (2022): 26–34. https://doi.org/10.15587/1729-4061.2022.251760.

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Power systems are usually expected to become heavily loaded as the demand for electrical energy grows and economic consideration limits the installation of additional transmission and generating capacity. Keeping the bus voltage in the power system within the standard permissible limits is an important concern to improve the voltage stability and avoid voltage collapse of the whole power system. The common and effective way to achieve this purpose is by adding flexible AC transmission line devices to the power system. One of these devices is static synchronous compensator. In this paper an app

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Aali, Seyedreza, and Daryoush Nazarpour. "Voltage Quality Improvement with Neural Network-Based Interline Dynamic Voltage Restorer." Journal of Electrical Engineering and Technology 6, no. 6 (2011): 769–75. http://dx.doi.org/10.5370/jeet.2011.6.6.769.

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Tahar Karim, Benamar, Ahmed Allali, Houari Merabet Boulouiha, and Mouloud Denai. "Voltage profile and power quality improvement using multicell dynamic voltage restorer." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 4 (2022): 2216. http://dx.doi.org/10.11591/ijpeds.v13.i4.pp2216-2225.

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Multi-level converter topologies are increasingly being used in various applications due to their high power, high voltage, and low harmonic levels in the output waveforms. These converter topologies produce different output voltage levels and have a highly modular structure. This paper proposes the design of a dynamic voltage restorer (DVR) based on multilevel topology to enhance the voltage profile and improve the power quality in the network. The DVR is an effective, fast-acting device which detects voltage sags and swells in a transmission line and inject a compensating voltage through a b

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Kong, Tae-Sik, Hee-Dong Kim, Hung-Sok Park, et al. "Study on Reliability Improvement of Voltage Transformers by Increasing Voltage Factor." Journal of Electrical Engineering & Technology 15, no. 3 (2020): 1463–69. http://dx.doi.org/10.1007/s42835-020-00374-0.

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Benamar, Tahar Karim, Allali Ahmed, Merabet Boulouiha Houari, and Denai Mouloud. "Voltage profile and power quality improvement using multicell dynamic voltage restorer." International Journal of Power Electronics and Drive Systems 13, no. 4 (2022): 2216~2225. https://doi.org/10.11591/ijpeds.v13.i4.pp2216-2225.

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Multi-level converter topologies are increasingly being used in various applications due to their high power, high voltage, and low harmonic levels in the output waveforms. These converter topologies produce different output voltage levels and have a highly modular structure. This paper proposes the design of a dynamic voltage restorer (DVR) based on multilevel topology to enhance the voltage profile and improve the power quality in the network. The DVR is an effective, fast-acting device which detects voltage sags and swells in a transmission line and inject a compensating voltage through a b

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Liliana, ., Aini Zulfatri, and Bandri Sepannur. "Voltage Quality Improvement with Shunt Bank Capasitor and Transformer Tap." Engineering and Technology Journal 9, no. 08 (2024): 4863–70. https://doi.org/10.5281/zenodo.13364019.

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Morocco Feeder Tapung Department is 20 kV feeder with the largest voltage drop in the PT. PLN (PERSERO), ULP Duri. The voltage drop was 16% of the nominal voltage. This study conducted voltage repairs on the medium and low voltage sides to strive for voltage increase to achieve standardization. The first stage of repair was to increase the tap by 5% on the secondary side of the Unit 1 distribution transformer of the Balai Pungut Substation. The second stage of repair was by placing a shunt capacitor bank with a capacity of 400 kVAR on bus 172. The third stage of repair was by increasing the ta

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Karimi, Mohsen, Mohammad Pichan, Mehdi Sadri, and Seyed Morteza Seyedjafari. "Performance improvement of resonant multi-loop controller with odd harmonic injection for standalone three-phase inverter." World Journal of Engineering 16, no. 6 (2019): 782–90. http://dx.doi.org/10.1108/wje-06-2019-0168.

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Purpose This paper aims to investigate an improved control method and digital signal processor-based (DSP-based) digital implementation of three-phase standalone inverter. The proposed method is performance developed of the proportional-resonant controller (PRC) with harmonic injection technique, aiming to improve load voltages quality under different loads, especially nonlinear loads. The advanced proposed multi-loop controller is consisted of current harmonic loops for suppressing odd harmonic, which are analyzed in discrete-time domain. Besides, the voltage loop is also used to compensate t

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Huang, Ping, Ke Wei Xu, Bob B. He, and Yong Han. "An Investigation of Residual Stress of Porous Titania Layer by Micro-Arc Oxidation under Different Voltages." Materials Science Forum 490-491 (July 2005): 552–57. http://dx.doi.org/10.4028/www.scientific.net/msf.490-491.552.

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The surface modification of titanium by micro-arc oxidation under different voltages was processed to achieve good direct oseointegration. The new technique of two-dimensional X-ray diffraction was used to measure the residual stress of the layer. The results show that a porous titania layer containing Ca and P is obtained by micro-arc oxidation. The pore size and Ca/P of the layer are affected by the voltage. The high voltage can induce forming CaTiO3. The residual stress under different voltage is compressive stress and increases with the improvement of the voltage.

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H., Mallesam Dora*1 &. M. Vikas2. "COMPARATIVE CONTROL OF DVR FOR POWER QUALITY IMPROVEMENT UNDER UNBALANCED VOLTAGE SAG." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 7, no. 6 (2018): 275–81. https://doi.org/10.5281/zenodo.1284202.

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A Power quality problem is an occurrence manifested as a nonstandard voltage, current or frequency that results in a failure or a disoperation of end user equipments. Power quality is certainly a major concern in the present era; it becomes especially important with the introduction of sophisticated devices, whose performance is very sensitive to the quality of power supply. Voltage sag is one of the severe power quality problems. This report addresses all the different aspects related to voltage sag problem, such as: its types, consequences and mitigation. At present, a wide range of very fle

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Bhagwant, Singh Sahota*1 &. Prof.Baljeet Singh2. "APPLICATION OF FACTS DEVICES FOR POWER QUALITY IMPROVEMENT IN POWER TRANSMISSION SYSTEM." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 7, no. 8 (2018): 400–410. https://doi.org/10.5281/zenodo.1345675.

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Today in the modern era the energy is generated via different mediums and their transmission is dependent upon the way the next other side wants the signal. When transmitting the signal, the signal can be distorted because of the many power and transmission quality problems. Due to this, drop in the voltage occurs in the line which creates an oscillating wave that results to reduce the PF (power factor). The FACTS devices are used to solve this problem earlier. But drawback also occurs while injecting the voltages in the power lines. At this time different hybrid combinations of FACTS devices

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Xie, Shijun, Zhou Mu, Weidong Ding, et al. "Development of Broadband Resistive–Capacitive Parallel–Connection Voltage Divider for Transient Voltage Monitoring." Energies 15, no. 2 (2022): 451. http://dx.doi.org/10.3390/en15020451.

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The on-site measurement of transient voltages is of great significance in analyzing the fault cause of power systems and optimizing the insulation coordination of power equipment. Conventional voltage transformers normally have a narrow bandwidth and are unable to accurately measure various transient voltages in power systems. In this paper, a wideband parallel resistive–capacitive voltage divider is developed, which can be used for online monitoring of transient voltages in a 220 kV power grid. The structures of the high-voltage and low-voltage arms were designed. The internal electric field

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Pavithren, Pavithren, Raman Raghu Raman, Pratap Nair, and K. Nithiyananthan. "Voltage Stability Analysis and Stability Improvement of Power System." International Journal of Electrical and Computer Engineering (IJECE) 5, no. 2 (2015): 189. http://dx.doi.org/10.11591/ijece.v5i2.pp189-197.

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<p>The main objective of this research work is to analysis the voltage stability of the power system network and its improvement in the network.voltage stability of a power system. A system enters a state of voltage instability when a disturbance, increase in load demand, or change in system condition causes a progressive and an uncontrollable drop in voltage or voltage collapse. The continuing increase in demand for electric power has resulted in an increasingly complex, interconnected system, forced to operate closer to the limits of the stability. This has necessitated the implementat

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Anichebe, I. B., and A. O. Ekwue. "Improvement of bus voltage profiles of Nigerian power network in the presence of Static Synchronous Compensator (STATCOM) and Doubly Fed Induction Generator (DFIG)." Nigerian Journal of Technology 39, no. 1 (2020): 228–37. http://dx.doi.org/10.4314/njt.v39i1.26.

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Frequent blackouts and unstable supply of electricity show that the voltage instability problem has been one of the major challenges facing the power system network in Nigeria. This study investigates the voltage stability analysis of the Nigerian power network in the presence of renewable energy sources; FACTS device is used as a voltage controller. A 330kV, 28-bus power system network was studied using the PSS/E software-based Newton-Raphson load-flow technique. The results show that 10 out of the 28 buses had voltages lying below the statutory limit of 0.95 ≤ 1.05 p.u. The application of ST

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Boukadoum, Aziz, Abla Bouguerne, and Tahar Bahi. "Performances improvement of Shunt active power filter With voltage sensor failure." International Journal of Energetica 8, no. 1 (2023): 38. https://doi.org/10.47238/ijeca.v5i2.129.

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The recent development of fully controllable power semiconductors has led to the design of new structures of static converters called active power filters intended to compensate for harmonic disturbances. The purpose of this filter is to inject harmonic currents so that the source current and voltage are made sinusoidal. The active power filter is connected in parallel with the network. The effectiveness of this filter essentially lies in its control and command strategy to better respond to production and distribution constraints. It automatically adapts to the evolution of disturbances intro

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Yadav, M. Praful, P. Sujatha, and P. B. Kumar. "Power Quality Improvement Using Dynamic Voltage Restorer on Grid-Connected Wind Energy System." European Journal of Electrical Engineering 23, no. 5 (2021): 401–7. http://dx.doi.org/10.18280/ejee.230506.

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Reduction of fossil fuels and increasing technology made importance of wind generation as renewable energy sources. With increasing number of wind farms fed to grid increases grid fault issues due to various wind systems disconnected from grid during grid faults. To get better grid operation, wind farms are probable to be carried during disturbance related to grid faults extensively known as fault ride through capability. In proposed system a fault ride through method in wind farm management system connected to grid is investigated in term of critical clearing time. This paper examines the use

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Ali, Faheem, Muhammad Naeem Arbab, Gulzar Ahmed, Majid Ashraf, and Muhammad Sarim. "An SVC controller for Power Quality Improvement of a Heavily Loaded Grid." April 2020 39, no. 2 (2020): 247–56. http://dx.doi.org/10.22581/muet1982.2002.03.

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Pakistan is faced with energy crises from the last two decades. Generation cannot balance the load demands of the electricity consumers. Power delivery systems are generally old-fashioned and overloaded. They are unable to provide consistent and uninterrupted supply to commercial, industrial, and domestic loads. Generally speaking, the Power Systems consist of loads that are inductive and resistive in nature. Heavy machinery, induction motors, and arc furnaces are heavily inductive in nature. Inductive loads when operated in a weak power system results in lagging VARs (Volt Ampere Reactive) an

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Ali, Faheem, Muhammad Naeem Arbab, Gulzar Ahmed, Majid Ashraf, and Muhammad Sarim. "An SVC controller for Power Quality Improvement of a Heavily Loaded Grid." April 2020 39, no. 2 (2020): 247–56. http://dx.doi.org/10.22581/10.22581/muet1982.2002.03.

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Abstract:

Pakistan is faced with energy crises from the last two decades. Generation cannot balance the load demands of the electricity consumers. Power delivery systems are generally old-fashioned and overloaded. They are unable to provide consistent and uninterrupted supply to commercial, industrial, and domestic loads. Generally speaking, the Power Systems consist of loads that are inductive and resistive in nature. Heavy machinery, induction motors, and arc furnaces are heavily inductive in nature. Inductive loads when operated in a weak power system results in lagging VARs (Volt Ampere Reactive) an

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