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Journal articles on the topic 'Molded Case Circuit Breaker'

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Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Shea, J. J., and J. A. Bindas. "Measuring molded case circuit breaker resistance." IEEE Transactions on Components, Hybrids, and Manufacturing Technology 16, no. 2 (March 1993): 196–202. http://dx.doi.org/10.1109/33.219405.

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2

Lee, Kun-A., Young-Maan Cho, and Ho-Joon Lee. "Circuit Model and Analysis of Molded Case Circuit Breaker Interruption Phenomenon." Electronics 9, no. 12 (December 2, 2020): 2047. http://dx.doi.org/10.3390/electronics9122047.

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There are complex physical phenomena for the interpretation of a molded case circuit breaker (MCCB) in a distribution system. Most of the studies of MCCB interruption phenomena were conducted with numerical analysis and experiments. This traditional approach may help improve the performance of the MCCB itself, but it is difficult to find connectivity with other systems. In this paper, the circuit model is proposed and the interruption phenomenon of MCCB is analyzed. The interruption of the MCCB is divided into three sections to deal with physical phenomena occurring in each area. A simplified model is proposed considering the characteristics of each section. Based on this model, the circuit model is proposed. To implement the features of each section, the calculation of physical phenomena is carried out, and this is expressed in the circuit model with resistance and zener diode. Comparing the results of the simulation with the experimental results is as follows. For 7-plates (basic state), the error rate is −5.6% in section II and 16.8% in section III. For 1-plate, the error rate is 36.5% in section II and −17.0% in section III. This case shows much difference from the simplified model in this paper, resulting in the largest error rate. The 7-plates and 5-plates cases, which are available in the general MCCB owing to the shortest distance from the arc, represent a relatively small error rate. Using the proposed circuit model, it is expected that the entire system, including the interruption phenomenon, can be interpreted as a single circuit model.

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3

Yoo, Jae-Geun, Myung-Il Choi, Chee-Hyun Park, and Jae-Hyun Son. "Effect on Molded Case Circuit Breaker of Harmonic Current." Journal of the Korea Academia-Industrial cooperation Society 9, no. 1 (February 28, 2008): 53–58. http://dx.doi.org/10.5762/kais.2008.9.1.053.

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4

Zhou, Ya Jun, Wen Bo Chen, and Zhe Chen. "Design of Current Selective Protection in Intelligent Molded Case Circuit Breaker." Advanced Materials Research 544 (June 2012): 77–81. http://dx.doi.org/10.4028/www.scientific.net/amr.544.77.

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Synthetically applied the technology of Full Current Selective Protection and Zone-Selective interlocking mainly, this paper comes up with a new Intelligent Molded Case Circuit Breaker system. Use the accurate calculation method, to achieve a good function of three kinds of current protection. By means of coordinate communication, the system implements selective trip and protection function, and improve the reliability and safety of the distribution system. Self-diagnostic function works when the system goes wrong, which extend the service life of this circuit breaker system.

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5

Song, Tae-hun, Young-Maan Cho, and Kwang-Cheol Ko. "Dielectric Recovery Characteristic according to Design Parameters of Molded Case Circuit Breaker." Journal of the Korean Institute of Illuminating and Electrical Installation Engineers 30, no. 4 (April 30, 2016): 72. http://dx.doi.org/10.5207/jieie.2016.30.4.072.

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6

Ogawa, Yoshihisa, Tadashi Koshizuka, Koichi Asakusa, and Tsuyoshi Wakasa. "Arc Model to Evaluate D.C. Interruption Performance for Molded Case Circuit Breaker." IEEJ Transactions on Power and Energy 138, no. 6 (June 1, 2018): 529–34. http://dx.doi.org/10.1541/ieejpes.138.529.

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7

Pan, Ying, Zhixian Tang, and Zhi Cheng. "Analysis of vibration characteristics of mounting plate for molded case circuit breaker." Journal of Physics: Conference Series 1303 (August 2019): 012008. http://dx.doi.org/10.1088/1742-6596/1303/1/012008.

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8

Gregory, G. D. "Single-pole short-circuit interruption of molded-case circuit breakers." IEEE Transactions on Industry Applications 35, no. 6 (1999): 1265–70. http://dx.doi.org/10.1109/28.806037.

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9

Gregory, G. D., and W. M. Hall. "Predicting molded-case circuit breaker let-through characteristics in an electrical system under short-circuit conditions." IEEE Transactions on Industry Applications 29, no. 3 (1993): 548–56. http://dx.doi.org/10.1109/28.222425.

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10

Aronstein, Jesse. "Temperature Sensitivity of Residential Molded Case Circuit Breakers." IEEE Access 7 (2019): 38714–20. http://dx.doi.org/10.1109/access.2019.2906198.

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11

Hall, W. M., and G. D. Gregory. "Short-circuit ratings and application guidelines for molded-case circuit breakers." IEEE Transactions on Industry Applications 35, no. 1 (1999): 135–43. http://dx.doi.org/10.1109/28.740857.

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12

XIANG, H. "Investigation on the Dynamic Characteristics of a Magnetic Release in Molded Case Circuit Breaker." IEICE Transactions on Electronics E88-C, no. 8 (August 1, 2005): 1647–51. http://dx.doi.org/10.1093/ietele/e88-c.8.1647.

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13

Park, Hyeon-Jeong, So-Hyun Kim, Jong-Suk Ro, and Hyun-Kyo Jung. "Analysis and Design of Separated Permanent-Magnet Actuator for 225AF Molded Case Circuit Breaker." Journal of international Conference on Electrical Machines and Systems 3, no. 4 (December 1, 2014): 487–90. http://dx.doi.org/10.11142/jicems.2014.3.4.487.

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14

Huang, Jing, Bing Shen, and Feng Yang. "Simulation Model of Shipboard Low Voltage Molded Case Circuit Breaker Based on PSCAD/EMTDC." Journal of Power and Energy Engineering 02, no. 04 (2014): 532–40. http://dx.doi.org/10.4236/jpee.2014.24072.

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15

Sprague, M. J. "Service-life evaluations of low-voltage power circuit breakers and molded-case circuit breakers." IEEE Transactions on Industry Applications 37, no. 1 (2001): 145–52. http://dx.doi.org/10.1109/28.903139.

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16

Zhang, Jing, Feng Wang, Jun Gang Zhou, and Ming Long Hu. "The MCCB Electrical Clearance and Creepage Distance Measurement Uncertainty Evaluation." Applied Mechanics and Materials 742 (March 2015): 86–89. http://dx.doi.org/10.4028/www.scientific.net/amm.742.86.

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The electrical clearance and creepage distance are two key parameters for the design of MCCB (molded case circuit breaker, MCCB), which directly influences the electrical safety performance of MCCB. In this paper, the electrical clearance and creepage distance measurement uncertainty were evaluated through the uncertainty sources analysis, the mathematical model establishment and the components uncertainty calculation, to ensure the accuracy of the measurement results.

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17

Ruempler, Ch, R. Chechare, and A. Zacharias. "Arc Modeling in Industrial Applications." PLASMA PHYSICS AND TECHNOLOGY 6, no. 2 (2019): 200–207. http://dx.doi.org/10.14311/ppt.2019.2.200.

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Simulation methods are routinely applied in the design and development process of power distribution devices. Arcing phenomena that occur during switching operations or fault events are modeled to optimize device performance and gain deeper insights into the behavior that testing cannot easily provide. In this contribution, some applications are presented in detail. The first example describes the distribution of debris that is generated inside a molded case circuit breaker (MCCB) during short-circuit interruption. A model is used to analyze the debris transport and to derive a solution to address issues caused by the debris. Second application example is a cooling device for hot plasma gases vented by circuit breakers. A model driven design process helps to define the device dimensions to achieve a safe temperature level of the exhaust gases. The third example deals with short-circuit behavior of a hollow core high voltage surge arrester, comparing model and experimental results.

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18

Li, Xingwen, Degui Chen, Yunfeng Wang, Qian Wang, and Yingsan Geng. "Analysis of the Interruption Process of Molded Case Circuit Breakers." IEEE Transactions on Components and Packaging Technologies 30, no. 3 (September 2007): 375–82. http://dx.doi.org/10.1109/tcapt.2007.900051.

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19

Yao, Jiaguo. "Research on Design of Vibration Platform of Molded Case Circuit Breaker and Reliability of Platform Frame." American Journal of Engineering and Technology Management 3, no. 2 (2018): 35. http://dx.doi.org/10.11648/j.ajetm.20180302.11.

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20

Choi, Young-Kil, and Seung-Wook Jee. "Simple Analysis Method for the Interrupting Capability of a Contact System in a Molded Case Circuit Breaker." Journal of Electrical Engineering and Technology 12, no. 3 (May 1, 2017): 1257–61. http://dx.doi.org/10.5370/jeet.2017.12.3.1257.

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21

Matsumura, Toshiro, Yoshiyuki Ikuma, and Yukio Kito. "Improvement of Current Limiting Performance of a Molded-Case Circuit Breaker by Mounting an Air-Buffer Chamber." IEEJ Transactions on Power and Energy 110, no. 5 (1990): 420–26. http://dx.doi.org/10.1541/ieejpes1990.110.5_420.

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22

Yokomizu, Yasunobu, Toshiro Matsumura, Kenichiro Shimizu, Yukio Kito, Shinji Takayama, and Youichi Aoyama. "Conductance Diagnostics in Hot Gas Ejected from a Molded Case Circuit Breaker during High Current Arc Interruption." IEEJ Transactions on Power and Energy 116, no. 3 (1996): 338–45. http://dx.doi.org/10.1541/ieejpes1990.116.3_338.

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23

Lee, Kun-A., and Kwang-Cheol Ko. "Experimental Investigation of Improvement in the Dielectric Recovery Characteristics of a Molded Case Circuit Breaker Splitter Plate." Journal of Electrical Engineering & Technology 15, no. 2 (January 9, 2020): 757–63. http://dx.doi.org/10.1007/s42835-020-00344-6.

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24

Ro, Jong‐Suk, Hyeon‐Jeong Bak, and Hyun‐Kyo Jung. "Characteristic analysis and design of a novel lorentz force driving actuator for a molded case circuit breaker." IET Electric Power Applications 9, no. 1 (January 2015): 1–9. http://dx.doi.org/10.1049/iet-epa.2013.0314.

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25

Wang, Lijun, Yujie Wang, Yujie Li, and Shenli Jia. "Measurement and simulation analysis of internal pressure in arc chamber of low-voltage molded case circuit breaker." AIP Advances 8, no. 6 (June 2018): 065022. http://dx.doi.org/10.1063/1.5030964.

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26

Aronstein, Jesse, and David W. Carrier. "Molded Case Circuit Breakers - Some Holes in the Electrical Safety Net." IEEE Access 6 (2018): 10062–68. http://dx.doi.org/10.1109/access.2018.2803298.

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27

Song, Tae-Hun, Young-Maan Cho, and Kwang-Cheol Ko. "Study on Measurement Method of Dielectric Recovery Voltage to analysis Dielectric Recovery Characteristic of Molded Case Circuit Breaker." Journal of the Korean Institute of Illuminating and Electrical Installation Engineers 29, no. 8 (August 31, 2015): 49–54. http://dx.doi.org/10.5207/jieie.2015.29.8.049.

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28

Kim, Young Shik, Bong Jo Ryu, and Kil Young Ahn. "Development of a Molded Case Circuit Breaker with a Spring-Actuated Linkage Based on Multi-Body Dynamics Analysis." Advanced Materials Research 711 (June 2013): 299–304. http://dx.doi.org/10.4028/www.scientific.net/amr.711.299.

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In this research we present multi-body dynamics analysis can be applied in product development using a case study of a Molded Case Circuit Breaker (MCCB) with a spring-actuated linkage, which can save time and cost considerably. In particular, we demonstrate how to evaluate and improve durability of the MCCB based on multi-body dynamics and finite element simulation given SM45C steel used for the MCCB links. Toward this goal, a 3D MCCB dynamic model is first developed and dynamic forces are analyzed by using the multi-body dynamics software, ADAMS. Finite element simulation is then performed to examine maximum principal stresses considering deflections and dynamic loads. Further, mechanical properties of SM45C steel are measured experimentally from tensile and fatigue tests. As a result, we verify that stress loads acting on the latch pin of the spring-actuated linkage are critically higher, which ultimately leads to a low-cycle fatigue fracture of the pin. Based on our analytically estimated maximum principal stresses in the MCCB and experimentally measured mechanical properties of SM45C steel, we evaluate design durability and improve our design. As a result, using a 4 mm diameter pin and modifying SM45C with heat treating that includes quenching and tempering, we successfully achieve a MCCB product development, which provides sufficient strengths to prevent yielding and fatigue failures from repeated dynamic loads.

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29

Matsumura, Toshiro, Yoshiyuki Ikuma, and Yukio Kito. "Improvement of Current Limiting Performance of a Molded-Case Circuit Breaker by Repression of Sudden Drops in Arc Voltage." IEEJ Transactions on Power and Energy 110, no. 11 (1990): 938–43. http://dx.doi.org/10.1541/ieejpes1990.110.11_938.

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30

Roybal, D. D. "Standards and ratings for the application of molded-case, insulated-case, and power circuit breakers." IEEE Transactions on Industry Applications 37, no. 2 (2001): 442–51. http://dx.doi.org/10.1109/28.913707.

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31

Lim, Kee-Joe, Seong-Hwa Kang, Un-Yong Lee, and Hee-Chan Song. "3-D finite element analysis of magnetic force on the arc for arc chamber design of molded case circuit breaker." European Physical Journal Applied Physics 14, no. 3 (June 2001): 183–86. http://dx.doi.org/10.1051/epjap:2001157.

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32

Yeon, Yeong-Mo, and Seung-Hee Kim. "Diagnosis of Abnormal Heat Generation in the Connection Part in Low Voltage MCCBs for Fire Risk Prediction." Fire Science and Engineering 34, no. 5 (October 31, 2020): 42–49. http://dx.doi.org/10.7731/kifse.2073bb81.

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This study is conducted to determine the critical temperature under normal current flow by estimating normal heat generation; the saturation temperature of the connecting part of a circuit breaker is simultaneously measured by sub-dividing the rated current of molded case circuit breaker (MCCB) into 10 steps. Further, a risk analysis was conducted via an investigation of thermal characteristics. To this end, five types of MCCBs were selected while building a temperature test box; further, the heat generation temperature of the three phases on the line and load sides was measured using the sub-divided load current to represent the electrical heat variation and a high-current-generating tester real-time. The results the test, demonstrate that the temperature of the connecting part of the MCCB stably increased; in addition, the standard of the heat generation could be established and the load amount could be predicted by measuring the temperature variation. Meanwhile, the heat generation temperature was different for different types of wirings such as power lines and Busbar. Further among the R, S, and T phases of the MCCB, S phase temperature was slightly higher than those of the others. This study can serve as a theoretical reference for future applied research on the dangers of fire due to the heat generation of the connecting part of the MCCB, wherein the risks of abnormal heat generation need to be analyzed. The results obtained can be applied not only to prevent the carbonization accidents of MCCBs installed inside distribution panels being used at industrial sites, but also to manage the risks of the distribution circuit breaker and prevent the electrical fire.

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33

Jung, Da-Woon, and Jae-Ho Kim. "A Study on the Operating Characteristics of Molded Case Circuit Breakers according to Temperature Rise." Journal of the Korean Society of Safety 30, no. 5 (October 31, 2015): 8–13. http://dx.doi.org/10.14346/jkosos.2015.30.5.8.

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34

Thangarajan, R. Beema, Satish Chetwani, Vagish Shrinet, Milind Oak, and Sachin Jain. "A comparison of thermoset and thermoplastic arc chutes in molded-case circuit breakers under fault clearing." IEEE Electrical Insulation Magazine 31, no. 2 (March 2015): 30–35. http://dx.doi.org/10.1109/mei.2015.7048135.

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35

Choi, Young Kil, and Seung Wook Jee. "The Effect of the Magnetic Grids and Arc Runner on the Arc Plasma Column in the Contact System of a Molded Case Circuit Breaker." IEEE Transactions on Plasma Science 46, no. 3 (March 2018): 606–10. http://dx.doi.org/10.1109/tps.2018.2801389.

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36

Ito, Shokichi, Yoshihiro Kawase, and Satoshi Tatsuoka. "3-D Finite Element Analysis of Magnetic Blowout Forces on the Arc in Molded Case Circuit Breakers." IEEJ Transactions on Power and Energy 113, no. 10 (1993): 1100–1105. http://dx.doi.org/10.1541/ieejpes1990.113.10_1100.

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37

WANG, Qian, and Xingwen LI. "A Method to Predict the Spring Parameters of the Adjustable Magnetic Release for Molded Case Circuit Breakers." IEICE Transactions on Electronics E93-C, no. 9 (2010): 1449–51. http://dx.doi.org/10.1587/transele.e93.c.1449.

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38

LI, X. "Investigation on the Interruption Process of Molded Case Circuit Breakers Including the Influence of Blow Open Force." IEICE Transactions on Electronics E89-C, no. 8 (August 1, 2006): 1187–93. http://dx.doi.org/10.1093/ietele/e89-c.8.1187.

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39

Xingwen Li and Degui Chen. "3-D finite element analysis and experimental investigation of electrodynamic repulsion force in molded case circuit breakers." IEEE Transactions on Components and Packaging Technologies 28, no. 4 (December 2005): 877–83. http://dx.doi.org/10.1109/tcapt.2005.853175.

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40

Yokomizu, Yasunobu, Toshihiro Matsumura, and Yukio Kito. "Short-circuit phenomenon through hot gas ejected from molded case circuit breakers during high current interruption process and prevention of its occurrence." Electrical Engineering in Japan 132, no. 1 (July 15, 2000): 22–29. http://dx.doi.org/10.1002/(sici)1520-6416(20000715)132:1<22::aid-eej4>3.0.co;2-y.

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41

Yokomizu, Yasunobu, Toshiro Matsumura, and Yukio Kito. "Short-Circuit Phenomenon through Hot Gas Ejected from Molded-Case Circuit Breakers during High Current Interruption Process and Prevention of Its Occurrence." IEEJ Transactions on Power and Energy 119, no. 7 (1999): 834–39. http://dx.doi.org/10.1541/ieejpes1990.119.7_834.

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42

Jung, Da-Woon, and Jae-Ho Kim. "A Study on the Operating Characteristics of Hydraulic Magnetic Type Molded Case Circuit Breakers according to Harmonic Current." Journal of the Korean Institute of Illuminating and Electrical Installation Engineers 30, no. 4 (April 30, 2016): 31. http://dx.doi.org/10.5207/jieie.2016.30.4.031.

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43

Ito, S., Y. Kawase, and H. Mori. "3-D finite element analysis of magnetic blowout forces acting on the arc in molded case circuit breakers." IEEE Transactions on Magnetics 33, no. 2 (March 1997): 2053–56. http://dx.doi.org/10.1109/20.582717.

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44

Donner, Gary, Jeremy D. Smith, and Jessica J. Maldonado. "An Introduction to IEEE Standard 1458-2017: Recommended Practice Update for Molded-Case Circuit Breakers for Industrial Applications." IEEE Industry Applications Magazine 26, no. 1 (January 2020): 37–41. http://dx.doi.org/10.1109/mias.2019.2943629.

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45

Ikuma, Yoshiyuki, Toshiro Matsumura, and Yukio Kito. "Influence of deion plate configurations and arc column behaviour on the arc voltage waveforms in low-voltage molded-case circuit breakers." IEEJ Transactions on Power and Energy 108, no. 3 (1988): 119–24. http://dx.doi.org/10.1541/ieejpes1972.108.119.

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46

Yeon, Yeong-Mo, and Seung-Hee Kim. "Development of Wireless Heat Variation Detection System between MCCBs and MCs within an MCC." Fire Science and Engineering 35, no. 4 (August 31, 2021): 42–51. http://dx.doi.org/10.7731/kifse.13b79013.

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In this study, we developed a wireless heat variation detection system that can measure the temperature difference between the molded case circuit breaker (MCCB) and magnetic contactor (MC) of the motor control center (MCC), collect data, and monitor the heat variation of the MCC connection. Thus far, we have developed a temperature controller and applied a multi-communication technique based on Bluetooth Low Energy between the repeater and temperature controller between the MCCB and MC. Furthermore, we designed the measured temperature data to be transmitted to the cloud server via a gateway. To verify the functionality and performance of the developed wireless heat variation detection system, we initially installed 1 gateway for communication with the MCC server, 4 sets of 4 types of temperature controllers in Repeater 1, 12 sets of 4 types of temperature controllers in Repeater 2, and 6 sets of 4 types of temperature controllers in Repeater 3. Then, we conducted an experiment to periodically monitor the temperature at 12 locations of the MCCB and MC terminal connections in real-time. This developed device can be applied not only to the MCC but also to the power distribution system using the MCCB and MC. This will contribute to the prevention and management of electrical fire accidents caused by heat variation that can occur because of poor contact, overcurrent, and abnormal current.

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47

Permata, Endi, and Dimas Aditama. "Sistem Kendali On/Off Circuit Breaker 150 kV AD20 Tipe 8DN2 di PT. Krakatau Daya Listrik." Energi & Kelistrikan 12, no. 1 (June 30, 2020): 65–73. http://dx.doi.org/10.33322/energi.v12i1.920.

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In the transmission and distribution system at PT. Krakatau Daya Listrik there is a security system created. In this case Circuit Breaker (CB), which is a security installation of the electricity network. CB that is used is GIS (Gas Insulated Switchgear) type where CB uses SF6 gas (Sulfurhexaflouride) as an insulating medium to extinguish the arc. This research itself aims to understand how the 150 kV GIS AD20 On / Off Circuit Breaker process control system at PT. Krakatau Daya Listrik and how the work processes, instrumentation, advantages and disadvantages and maintenance of the 150 kV GIS AD20 Circuit Breaker at PT. Krakatau Electric Power. Using research methods directly in the field with interviews and analysis. The results of this study are in the form of an understanding of CB operating systems that can be turned on both locally and via remote control and also the results of routine CB maintenance as an indication of the appropriateness of the equipment for operation so that from the associated analysis can be known the strengths and weaknesses of the device, especially the circuit breaker type GIS.

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48

Pérez-Molina, María José, Dunixe Marene Larruskain, Pablo Eguia, and Oihane Abarrategi. "Circuit Breaker Failure Protection Strategy for HVDC Grids." Energies 14, no. 14 (July 18, 2021): 4326. http://dx.doi.org/10.3390/en14144326.

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HVDC grids demand the fast and reliable operation of the protection system. The failure of any protection element should initialize a backup protection almost immediately in order to assure the system’s stability. This paper proposes a novel backup strategy that covers the failure of the primary protection including the malfunctioning of the HVDC circuit breaker. Only local voltage measurements are employed in the proposed backup protection and the voltage derivative is calculated at both sides of the limiting inductor. Consequently, the speed and reliability of the protection system are enhanced, since no communication channel is needed. This paper contains a thorough specification of the proposed protection strategy. This strategy is validated in a four-terminal HVDC grid with various fault case scenarios, including high-resistance fault cases. The operation of the backup protection is reliable and remarkably fast.

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49

Choi, Sang-Jae, and Sung-Hun Lim. "Impact on Current-Interrupting Characteristic by Parameter Settings of Superconducting Hybrid DC Circuit Breaker." Energies 14, no. 9 (April 26, 2021): 2469. http://dx.doi.org/10.3390/en14092469.

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DC faults cause severe disruption in not only the DC system but also the AC system because the fault current is very large and rapidly increases. The DC circuit breaker used to separate the DC faults from the power system is still being researched, but it is very expensive due to the use of multiple power semiconductors to interrupt a large fault current in a short time. However, if the quench characteristic of a superconductor is used, the amplitude of fault current can be reduced. Therefore, it is possible to effectively interrupt a large fault current even if a relatively cheap mechanically passive DC circuit breaker is used. In the current study, a superconducting hybrid DC circuit breaker is proposed, and the limiting characteristics of each element are analyzed. By using two superconducting elements, the quench occurs sequentially twice according to the magnitude of the fault current, and the current-limiting reactor and resistance are used. If a current-limiting reactor is used in the DC system, the fault current rises slowly at the beginning of the fault, and the use of resistance can reduce the magnitude of the fault current. The inductance of the current-limiting reactor and resistance parameter settings of the hybrid DC circuit breaker was analyzed by the step-changing case method, and the interrupting characteristic of the DC circuit breaker was improved.

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50

Kulkarni, Saurabh, and Surya Santoso. "Interrupting Short-Circuit Direct Current Using an AC Circuit Breaker in Series with a Reactor." Advances in Power Electronics 2012 (November 28, 2012): 1–14. http://dx.doi.org/10.1155/2012/805958.

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This paper describes and demonstrates the principle and efficacy of a novel direct current fault interruption scheme using a reactor in series with a controlled rectifier and a conventional AC circuit breaker. The presence of the series reactor limits the capacitive discharge current from the DC filter capacitor at the output terminals of the phase-controlled rectifier. In addition, the series reactor along with the filter capacitor forms an underdamped series RLC circuit which forces the fault current to oscillate about zero. This synthetic alternating current can then be interrupted using a conventional AC circuit breaker. The selection criteria for the series reactor and overcurrent protection are presented as well. Using the proposed scheme for an example case, a DC fault current magnitude is reduced from 56 kA to 14 kA, while the interruption time is reduced from 44 ms to 25 ms.

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