Log in

Relevant bibliographies by topics / Thyristor switched capacitor (TSC) / Journal articles

To see the other types of publications on this topic, follow the link: Thyristor switched capacitor (TSC).

Journal articles on the topic 'Thyristor switched capacitor (TSC)'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 32 journal articles for your research on the topic 'Thyristor switched capacitor (TSC).'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Yan, Tian Xiang, Xiao Lan Xie, Xin Yu Chen, and Peng Niu. "Analysis of Thyristor Switched Three-Phase Capacitor." Advanced Materials Research 722 (July 2013): 311–16. http://dx.doi.org/10.4028/www.scientific.net/amr.722.311.

Full text

Abstract:

it can limit the reactive power transmission to improve the voltage quality of power grid by installing parallel capacitors for reactive power compensation. But due to presence of transient transition process during power capacitors switching, it will seriously affect the service life of power capacitors and the safe operation of power system if the switching process of capacitors is not properly controlled. Firstly, this article described the fundamental principle and switching conditions of Thyristor Switched Capacitor (TSC). Secondly, the selection of switching time was analyzed for Thyristor Switched Three-phase Capacitor (TSTC). Finally, the simulation for TSTC was carried out by using MATLAB to verify the feasibility of analysis.

APA, Harvard, Vancouver, ISO, and other styles

2

Bimali, Bibek, Sushil Uprety, and Ram Prasad Pandey. "VAR Compensation on Load Side using Thyristor Switched Capacitor and Thyristor Controlled Reactor." Journal of the Institute of Engineering 16, no. 1 (April 12, 2021): 111–19. http://dx.doi.org/10.3126/jie.v16i1.36568.

Full text

Abstract:

Generally, AC loads are the inductive loads which are reactive in nature. These loads, thus, demand and draw reactive power from the supply source. If these loads draw large lagging current from the source, this will cause excessive voltage drop in the line, which can even cause the voltage collapsing in the line itself if the drop in the line is excessively high. VAR compensation means efficient management of reactive power locally to improve the performance of AC power systems. In this paper, Static VAR Compensator, using TSC (Thyristor Switched Capacitor) and TCR (Thyristor Controlled Reactor), is designed and simulated in MATLAB to maintain the power factor of power system nearly to unity at all times. TSC and TCR are basically shunt connected capacitors and inductor respectively whose switching (of capacitors) and firing angle control (of inductor) operations are carried out using thyristors. The purpose of capacitors is to supply lagging VAR as per the demand by the connected loads and the overcompensation due to excess VAR generated by the discrete set of turned on capacitors are absorbed by the adjustable inductive reactance of the inductor in TCR branch through firing angle control mechanism.

APA, Harvard, Vancouver, ISO, and other styles

3

Onah, A. J., E. E. Ezema, and I. D. Egwuatu. "An R-L Static Var Compensator (SVC)." European Journal of Engineering Research and Science 5, no. 12 (December 14, 2020): 46–51. http://dx.doi.org/10.24018/ejers.2020.5.12.2253.

Full text

Abstract:

Traditional static var compensators (SVCs) employ shunt reactors and capacitors. These standard reactive power shunt elements are controlled to produce rapid and variable reactive power. Power electronic devices like the thyristor etc. are used to switch them in or out of the network to which they are connected in response to system conditions. There are two basic types, namely the thyristor-controlled reactor (TCR), and the thyristor-switched capacitor (TSC). In this paper we wish to investigate a compensator where the reactor or capacitor is replaced by a series connected resistor and reactor (R-L). The performance equations are derived and applied to produce the compensator characteristics for each of the configurations. Their performances are compared, and the contrasts between them displayed. All three configurations are made to achieve unity power factor in a system.

APA, Harvard, Vancouver, ISO, and other styles

4

Wang, Li, Yan Qing Pang, Zhi Ming Song, Tang Sheng Xun, Hong Yu Gao, Yong Hong Huo, Tie Jun Hu, and Zhi Guang Ma. "Trigger Circuit Design for Series SCRs Valve Bank." Advanced Materials Research 468-471 (February 2012): 2912–15. http://dx.doi.org/10.4028/www.scientific.net/amr.468-471.2912.

Full text

Abstract:

This article introduces the trigger circuit of series SCRs valve and a new trigger circuit is designed for series SCRs valve of TSC. The trigger circuit is driven by voltage source and a high voltage cable is used for insulation of the pulse transformer. The trigger circuit has simple structure and a steep front of gate-current. This unit is used in 10 kV thyristor switched capacitor (TSC) reactive power compensation device, and the results verify its feasibility.

APA, Harvard, Vancouver, ISO, and other styles

5

Shen, Jing Shuang, Chuan Wen Jiang, Yu Jiao Liu, and Wei Jun Yun. "Energy Saving Analysis of TSC&APF Integrated Device." Advanced Materials Research 347-353 (October 2011): 2559–63. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.2559.

Full text

Abstract:

This paper analyzes the construction and control principle of Thyristor Switched Capacitor(TSC) and Active Power Filter(APF) integrated device. An harmonics detection method based on the instantaneous reactive power theory is also discussed. This method is effective to apply to TSC&APF integrated device and can get better result to eliminate the harmonics and compensate reactive power. A new integrated device which consists of TSC and APF is developed with this method. The application in the automobile industry shows that this device is correct and effective. It is a favorable model of improving the power quality and save the energy.

APA, Harvard, Vancouver, ISO, and other styles

6

Yang, Pan Pan, Chen Lu Dong, and Yang Wang. "Research on TSC Type Reactive Power Compensation Control System for Coal Mine Based on STM32." Applied Mechanics and Materials 716-717 (December 2014): 1551–54. http://dx.doi.org/10.4028/www.scientific.net/amm.716-717.1551.

Full text

Abstract:

As the increasing equipment of high power and motor load put into coal mine enterprise, the quality of power supply is decreasing, such as low power factor and large voltage fluctuation, etc. After analyzing the theory and algorithm of reactive power compensation in details, studying a system based on STM32 thyristor switched capacitor (TSC) reactive power compensation control system, which includes compensation, control algorithms of nine zone diagram, controller hardware design and software design. The experimental results show that, this TSC system can realize a faster and more accurate measurement and switching, which have an obvious effect of compensation, and a safe and efficient automatic operation of the system.

APA, Harvard, Vancouver, ISO, and other styles

7

Saied, Mohamed M. "Analysis and Minimization of the Oscillatory Currents in Multibranch Thyristor-Switched Capacitors." Advances in Power Electronics 2012 (December 17, 2012): 1–9. http://dx.doi.org/10.1155/2012/643716.

Full text

Abstract:

This paper addresses the switching transients in multibranch thyristor-switched capacitors (TSCs). The current transients following the addition of a branch to a group of already connected ones are analyzed. Expressions for both its fundamental and its oscillatory components are given in terms of the power network voltage, frequency, short-circuit level, and the switching angle. The relations include also the compensator parameters such as its total reactive power rating, total number of branches, the number of already connected branches, and the initial voltage on the capacitor involved in the switching transient. An expression for the distortion of the supply current is also given. A minimization procedure is presented for identifying the optimal switching angle leading to the least magnitude of the oscillatory current. Switching when the instantaneous supply voltage is equal to the initial voltage will result in the least oscillatory current only in the two special cases of a single-branch compensator, or in the switching of the first branch of a multi-branch TSC. The effect of both the total number of branches and the branch switching steps on the oscillatory current and on the optimal switching angle is also discussed. The advantage of the suggested procedure is demonstrated by investigating several case studies.

APA, Harvard, Vancouver, ISO, and other styles

8

Ahmed, Osama, and Abdul Wali Abdul Ali. "Simulating and Building an Appliance Clustering Fuzzified SVC for Single Phase System." ELEKTRIKA- Journal of Electrical Engineering 20, no. 1 (April 30, 2021): 34–42. http://dx.doi.org/10.11113/elektrika.v20n1.235.

Full text

Abstract:

A power system suffers from losses that can cause tragic consequences. Reactive power presence in the power system increases system losses delivered power quality and distorted the voltage. As a result, many studies are concerned with reactive power compensation. The necessity of balancing resistive power generation and absorption throughout a power system gave birth to many devices used for reactive power compensation. Static Var Compensators are hunt devices used for the generation or absorption of reactive power as desired. SVCs provide fast and smooth compensation and power factor correction. In this paper, a Fuzzified Static Var Compensator consists of Thyristor Controlled Reactor (TCR) branch and Thyristor Switched Capacitors branches for reactive power compensation and power factor correction at the load side is presented. The system is simulated using Simulink using a group of blocks and equations for measuring power factor, determining the weightage by which the power factor is improved, determining the firing angle of TCR branch, and capacitor configuration of TSC branches. Furthermore, a hardware prototype is designed and implemented with its associated software; it includes a smart meter build-up for power monitoring, which displays voltage, current, real power, reactive power and power factor and SVC branches with TRIAC as the power switching device. Lastly, static and dynamic loads are used to test the system's capability in providing fast response and compensation. The simulation results illustrated the proposed system's capability and responsiveness in compensating the reactive power and correcting the power factor. It also highlighted the proportional relation between reactive power presence and the increased cost in electricity bills. The proposed smart meter and SVC prototypes proved their capabilities in giving accurate measurement and monitoring and sending the data to the graphical user interface through ZigBee communication and power factor correction. Reactive power presence is an undesired event that affects the equipment and connected consumers of a power system. Therefore, fast and smooth compensation for reactive power became a matter of concern to utility companies, power consumers and manufacturers. Therefore, the use of compensating devices is of much importance as they can increase power capacity, regulate the voltage and improve the power system performance.

APA, Harvard, Vancouver, ISO, and other styles

9

Bhattacharyya, B., Vikash Kumar Gupta, and Sanjay Kumar. "Comparative study of GA & DE algorithm for the economic operation of a power system using FACTS devices." Archives of Electrical Engineering 62, no. 4 (December 1, 2013): 541–52. http://dx.doi.org/10.2478/aee-2013-0044.

Full text

Abstract:

Abstract The problem of improving the voltage profile and reducing power loss in electrical networks must be solved in an optimal manner. This paper deals with comparative study of Genetic Algorithm (GA) and Differential Evolution (DE) based algorithm for the optimal allocation of multiple FACTS (Flexible AC Transmission System) devices in an interconnected power system for the economic operation as well as to enhance loadability of lines. Proper placement of FACTS devices like Static VAr Compensator (SVC), Thyristor Controlled Switched Capacitor (TCSC) and controlling reactive generations of the generators and transformer tap settings simultaneously improves the system performance greatly using the proposed approach. These GA & DE based methods are applied on standard IEEE 30 bus system. The system is reactively loaded starting from base to 200% of base load. FACTS devices are installed in the different locations of the power system and system performance is observed with and without FACTS devices. First, the locations, where the FACTS devices to be placed is determined by calculating active and reactive power flows in the lines. GA and DE based algorithm is then applied to find the amount of magnitudes of the FACTS devices. Finally the comparison between these two techniques for the placement of FACTS devices are presented.

APA, Harvard, Vancouver, ISO, and other styles

10

Panfilov, Dmitry Ivanovich, Ahmed ElGebaly, Alexander Nikolaevich Rozhkov, and Michael Astashev. "Control Strategy of Thyristors Switched SVCs with High Power Quality." Transactions on Environment and Electrical Engineering 3, no. 1 (December 4, 2018): 15. http://dx.doi.org/10.22149/teee.v3i1.123.

Full text

Abstract:

In this paper, new static VAR compensators SVCs schemes for inductive and capacitive reactive power are developed. The provided schemes improve the flexibility and power system quality of SVCs by developing new circuit topologies with new control strategy of the reactive power. New circuit schemes are introduced for thyristors switched reactors TSR and thyristors switched capacitors TSC to design harmonic-free SVC with higher discrete number of reactive power levels. This paper provides the control algorithm and block diagram of the new SVCs schemes. The switching strategies of TSR and TSC are described and implemented. The new scheme of TSC requires special modifications to decrease transient effects and implementation of specific switching strategies to acquire SVC with high power quality indexes.

APA, Harvard, Vancouver, ISO, and other styles

11

Huang, Q., and G. A. J. Amaratunga. "Capacitor switched gate-turnoff thyristor." IEE Proceedings G Circuits, Devices and Systems 140, no. 2 (1993): 85. http://dx.doi.org/10.1049/ip-g-2.1993.0013.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Jalali, S. G., R. H. Lasseter, and I. Dobson. "Dynamic response of a thyristor controlled switched capacitor." IEEE Transactions on Power Delivery 9, no. 3 (July 1994): 1609–15. http://dx.doi.org/10.1109/61.311203.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Gupta, Manan. "FACTS Based Static VAR Compensation using Thyristor Switched Capacitor." International Journal for Research in Applied Science and Engineering Technology 6, no. 5 (May 31, 2018): 243–48. http://dx.doi.org/10.22214/ijraset.2018.5039.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Krysanov, Valery. "Thyristor switched capacitor in energy efficient industrial power systems." Energy-Safety and Energy-Economy 3 (June 2017): 15–20. http://dx.doi.org/10.18635/2071-2219-2017-3-15-20.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Lokhande, Sumant. "Design and Implementation of Thyristor Switched Capacitor for Reactive Load." International Journal for Research in Applied Science and Engineering Technology 6, no. 3 (March 31, 2018): 2117–19. http://dx.doi.org/10.22214/ijraset.2018.3500.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Kalpaktsoglou, D., A. Tsiakalos, S. Pouros, and Μ. Roumeliotis. "Comparison between Thyristor Switched Series Capacitors and Thyristor Switched Parallel Capacitors for wind power systems - A Simulation Study." WSEAS TRANSACTIONS ON POWER SYSTEMS 15 (January 8, 2021): 257–64. http://dx.doi.org/10.37394/232016.2020.15.30.

Full text

Abstract:

This paper compares by simulation the Thyristor Switched Series Capacitors (TSSC) Circuit with the Thyristor Switched Parallel Capacitors (TSPC) Circuit for wind turbines. The well-known TSSC circuit belongs to the Controlled Series Capacitor (CSC) circuits that have been used in power transmission lines in order to correct the power factor and improve the performance of the electrical system. Such a circuit can be used in wind power systems to improve and maximize the efficiency of a wind turbine. A typical direct-drive wind power system employs variable speed electric generators, but the downside is that systems like that suffer from high inductive reactance. A TSSC circuit, therefore, is able to counteract for any reactive losses, and improve the power factor as well as the efficiency. The main issue with the TSSC circuit is the use of a high number of capacitors that must be connected in series, which can increase the cost and the maintenance of the controller. This paper introduces a novel circuit with different control technique than the TSSC that employs capacitors in parallel configuration. The novel TSPC circuit was simulated in PSPICE and the benefits as well as the drawbacks are described

APA, Harvard, Vancouver, ISO, and other styles

17

Krastelev, E. G. "A vacuum switch trigger generator with a low-voltage storage capacitor switched by a thyristor." Instruments and Experimental Techniques 57, no. 6 (November 2014): 697–701. http://dx.doi.org/10.1134/s0020441214050157.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Ghassemi, Alireza, Seyed Saeed Fazel, Iman Maghsoud, and Siamak Farshad. "Comprehensive study on the power rating of a railway power conditioner using thyristor switched capacitor." IET Electrical Systems in Transportation 4, no. 4 (December 2014): 97–106. http://dx.doi.org/10.1049/iet-est.2013.0046.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Kalpaktsoglou, Dimitrios, Anastasios Tsiakalos, and Μanos Roumeliotis. "The Thyristor Switched Parallel Capacitors (TSPC) Converter for Power Factor Correction in Wind Power Systems." WSEAS TRANSACTIONS ON POWER SYSTEMS 16 (August 4, 2021): 149–56. http://dx.doi.org/10.37394/232016.2021.16.15.

Full text

Abstract:

This paper presents a novel power factor correction circuit suitable for low-speed electric generators usually used in direct drive wind turbines. The Thyristor Switched Parallel Capacitors (TSPC) circuit belongs to the Controlled Series Capacitor (CSC) circuits. Those circuits have been used in power transmission lines to correct the power factor and improve the performance of the electrical system. Such a circuit can be used in wind power systems to improve and maximize the efficiency of a wind turbine. A typical direct-drive wind power system employs variable speed electric generators, but the downside is that systems like that suffer from high and variable inductive reactance. In order to correct the power factor and to improve the efficiency of the system, the inductive reactance of the generator must become equal in value to the capacitive reactance. A TSPC circuit uses a set of capacitors, connected in series with anti-parallel thyristors. In every cycle, a controller triggers the appropriate thyristors, allowing the current to pass from the capacitor which then provides the system with the capacitive reactance that matches the generator’s inductor reactance. Therefore, the TSPC circuit is able to counteract for any reactive losses and improve the power factor, as well as, the efficiency. This paper introduces this novel power factor correction circuit that employs capacitors in parallel configuration. This circuit was simulated in PSPICE and was implemented and tested in the lab. Based on the simulation and implementation results, we discuss the benefits as well as the drawbacks of the proposed circuit

APA, Harvard, Vancouver, ISO, and other styles

20

Jacobson, D. A. N., and R. W. Menzies. "Comparison of thyristor switched capacitor and voltage source GTO inverter type compensators for single phase feeders." IEEE Transactions on Power Delivery 7, no. 2 (April 1992): 776–81. http://dx.doi.org/10.1109/61.127080.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Ghosh, Sagnika, and Mohd Hasan Ali. "Power quality enhancement by coordinated operation of thyristor switched capacitor and optimal reclosing of circuit breakers." IET Generation, Transmission & Distribution 9, no. 12 (September 4, 2015): 1301–7. http://dx.doi.org/10.1049/iet-gtd.2014.0613.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Sh. Aziz, Mothanna, and Ahmed G. Abdullah. "Hybrid control strategies of SVC for reactive power compensation." Indonesian Journal of Electrical Engineering and Computer Science 19, no. 2 (August 1, 2020): 563. http://dx.doi.org/10.11591/ijeecs.v19.i2.pp563-571.

Full text

Abstract:

<span>This article shows a prospective utilizations of flexible AC transmission system (FACTS) controls, like the static VAR compensator (SVC). One of the major motives for setting up an SVC is to recover dynamic voltage controller and thus increase system load aptitude. Static VAR compensator system proposed in this work consists of thyristor switched capacitor and thyristor controlled reactor sets, this style of SVC modelled using MATLAB simulink toolbox. A hybrid genetic algorithm with PI and fuzzy logic controls that used to control and expand the grid performance of the power system. The model results reveal that the Static Var Compensation contribute a decent result in upholding bus voltage after the power network is in an active and steady moment, besides it has a capability of the constancy control. It can totally work as a significant plan of reactive power recompense in power networks. </span>

APA, Harvard, Vancouver, ISO, and other styles

23

Ezzeddine, Touti. "Reactive power analysis and frequency control of autonomous wind induction generator using particle swarm optimization and fuzzy logic." Energy Exploration & Exploitation 38, no. 3 (November 19, 2019): 755–82. http://dx.doi.org/10.1177/0144598719886373.

Full text

Abstract:

Wind generation system is becoming increasingly important as renewable energy sources due to its advantages such as low maintenance requirement and mainly it does not cause environmental contamination. This paper presents the improvement procedure of the transient state and the regulation of the output frequency by adjusting the terminal capacitor. The aim is to provide frequency control of a self-excited induction generator in remote site using different strategies which are based on the adjustment of the reactive power at the outputs of a three-phase self-excited induction generator. A thyristor controlled reactor and a switched resistive load will be used to control reactive power. The proposed particle swarm optimization algorithm technique, location of the thyristor controlled reactor device, and parameter value are optimized simultaneously. The results obtained by this strategy will be compared with those provided by the use of Fuzzy Logic Controller. This study will be conducted through the analysis of the frequency in the steady state and transient case using a developed induction generator numerical model built using MATLAB/Simulink. Simulation and experimental results will be exposed and analyzed considering a resistive inductive load on a laboratory test bench.

APA, Harvard, Vancouver, ISO, and other styles

24

Johansson, Nicklas, Lennart Angquist, and Hans-Peter Nee. "An Adaptive Controller for Power System Stability Improvement and Power Flow Control by Means of a Thyristor Switched Series Capacitor (TSSC)." IEEE Transactions on Power Systems 25, no. 1 (February 2010): 381–91. http://dx.doi.org/10.1109/tpwrs.2009.2036484.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Ko, Wei‐Hsiang, and Jyh‐Cherng Gu. "Design and application of a thyristor switched capacitor bank for a high harmonic distortion and fast changing single‐phase electric welding machine." IET Power Electronics 9, no. 15 (December 2016): 2751–59. http://dx.doi.org/10.1049/iet-pel.2016.0310.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Simões Louzeiro, Rennivan, Livia Da Silva Oliveira, David Barbosa de Alencar, and Roger Santos Koga. "Study and Simulation of Voltage Profile Recovery on a 200 km Transmission Line Using Shunt Static Var Compensator (SVC)." International Journal for Innovation Education and Research 7, no. 11 (November 30, 2019): 1038–50. http://dx.doi.org/10.31686/ijier.vol7.iss11.1965.

Full text

Abstract:

This article aims to clarify how Flexible Alternating Current Transmission Systems (FACTS) technology, for static operating devices, conditioned on application to long-distance transmission lines can solve problems related to voltage drop on paths known as “weak zones” of the power transmission system. Some technical aspects of the construction of the SVC Static Reactive Compensator in conjunction with thyristor switching devices such as TCR and TSC are described. The proposed scenario is similar to the Brazilian interconnected system, where much of the generator park is hundreds of miles from the country's major consumer centers, leading to the structure of this system longer transmission lines and consequently greater losses in the transmission paths. For the proposed simulations the MATLAB Simulink ® environment was used considering different voltage unbalance operating ranges caused by three-phase faults in the transmission lines. The conclusions show that the distance from the lines to the load has a great influence on the oscillatory effects of voltage, and the fact that the “loading” transmission lines can compensate for much of the path by generating wars through the circuit's natural capacitance. The allocation of capacitor and shunt reactor banks is a reliable option for the transmission system and can act as a support mechanism for voltage control maneuvers to circumvent abrupt changes in reactive demand. From the simulations output comparison, the transient effects showed greater stability in the voltage signal recovery in the stretches where the compensation blocks were located near the lowering substation bus, thus demonstrating the capacity of the applied technology.

APA, Harvard, Vancouver, ISO, and other styles

27

Johansson, Nicklas, Lennart Angquist, and Hans-Peter Nee. "Correction to “An Adaptive Controller for Power System Stability Improvement and Power Flow Control by Means of a Thyristor Switched Series Capacitor (TSSC)” [Feb 10 381-391." IEEE Transactions on Power Systems 25, no. 2 (May 2010): 1200. http://dx.doi.org/10.1109/tpwrs.2010.2047335.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Filipova-Petrakieva, S. K., and Y. M. Shopov. "Electrical Device Protection from Overvoltage in a DC Power Supply Network: Fast-acting Protection, Realized by an “Artificial” Short Circuit in the Input of the Protected Device." Engineering, Technology & Applied Science Research 10, no. 1 (February 3, 2020): 5314–19. http://dx.doi.org/10.48084/etasr.3316.

Full text

Abstract:

In the present paper a protective device based on the so-called “artificial” short circuit in the input of the network, is proposed. To ensure the necessary time for switching on the protection, the increased power supply voltage is delayed to reach in the input of the protected device by additional inductance L, which is connected in series to the power supply. As a result of this forced short circuit, the DC-power supply is switched off by a standard protective circuit-breaker. The short circuit is realized by a fast-acting semi-conductor device (e.g. diac + thyristor, etc.). The controlling signal is formed as a voltage across a capacitor that is a part of RC-circuits connected in parallel to the DC-power supply network. An analytical expression for this voltage, using a classical method for transient analysis, is obtained. The main aim is to determine the exact time of switching on the protection. The research is confirmed with simulations by OrCAD PSpice under the exact values of the elements in the RC-circuits considered. Two rapid increase cases in the power supply voltage are considered: positive jump and linear increase. The suggested solution is applicable for overvoltage protection of different electrical devices. The electrical scheme, based on the electronic components, ensures a fast-acting breaking, which guarantees secure protection. Based on the analytical expressions, the synthesis of the circuit for control and protection is made and the respective values of its elements are calculated.

APA, Harvard, Vancouver, ISO, and other styles

29

Kalpaktsoglou, D., A. Tsiakalos, S. Pouros, and Μ. Roumeliotis. "Comparison between Thyristor Switched Series Capacitors and Thyristor Switched Parallel Capacitors for wind power systems - A Simulation Study." WSEAS TRANSACTIONS ON POWER SYSTEMS 15 (January 8, 2021). http://dx.doi.org/10.37394/232016.2020.15.30.

Full text

Abstract:

This paper compares by simulation the Thyristor Switched Series Capacitors (TSSC) Circuit with the Thyristor Switched Parallel Capacitors (TSPC) Circuit for wind turbines. The well-known TSSC circuit belongs to the Controlled Series Capacitor (CSC) circuits that have been used in power transmission lines in order to correct the power factor and improve the performance of the electrical system. Such a circuit can be used in wind power systems to improve and maximize the efficiency of a wind turbine. A typical direct-drive wind power system employs variable speed electric generators, but the downside is that systems like that suffer from high inductive reactance. A TSSC circuit, therefore, is able to counteract for any reactive losses, and improve the power factor as well as the efficiency. The main issue with the TSSC circuit is the use of a high number of capacitors that must be connected in series, which can increase the cost and the maintenance of the controller. This paper introduces a novel circuit with different control technique than the TSSC that employs capacitors in parallel configuration. The novel TSPC circuit was simulated in PSPICE and the benefits as well as the drawbacks are described

APA, Harvard, Vancouver, ISO, and other styles

30

Patil, Swapnil D., Renuka A. Kachare, Anwar M. Mulla, and Dadgonda R. Patil. "Performance Enhancement of Modified SVC as a Thyristor Binary Switched Capacitor and Reactor Banks by using Different Adaptive Controllers." Journal of King Saud University - Engineering Sciences, June 2021. http://dx.doi.org/10.1016/j.jksues.2021.06.006.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Ko, Wei-Hsiang, Jyh-Cherng Gu, and Wei-Jen Lee. "Energy efficiency improvement of a single-phase ac spot welding machine by using an advanced thyristor switched detuning capacitor bank." IEEE Transactions on Industry Applications, 2018, 1. http://dx.doi.org/10.1109/tia.2018.2796060.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Kawa, Adam, Robert Stala, Andrzej Mondzik, Stanislaw Pirog, and Adam Penczek. "High Power Thyristor-Based DC-DC Switched-Capacitor Voltage Multipliers. Basic Concept And Novel Derived Topology with A Reduced Number of Switches." IEEE Transactions on Power Electronics, 2015, 1. http://dx.doi.org/10.1109/tpel.2015.2505906.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!