Investigation on the Dynamic Characteristics of a Magnetic Release in Molded Case Circuit Breaker

Honggang XIANG; Degui CHEN; Xingwen LI; Zhipeng LI; Weixiong TONG

doi:10.1093/ietele/e88-c.8.1647

Investigation on the Dynamic Characteristics of a Magnetic Release in Molded Case Circuit Breaker

Honggang XIANG, Degui CHEN, Xingwen LI, Zhipeng LI, Weixiong TONG

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A method is proposed to investigate the dynamic characteristics of a magnet release in molded case circuit breaker. With the static field assumption, two grids of the magnetic torque and flux linkage are calculated with the variation of the current and air gap, firstly. Considering the influence of tripping torque, coupled with circuit equation and mechanism motion equation, the dynamic characteristics may be obtained with Runge-Kutta 4 method. Experiments have been done to verify the method, and the difference between the calculated results and the experimental results is below 10%. In addition, the influence of the reaction spring on the protection characteristics is analyzed using this method. It demonstrates that the setting current varies with the initial angle and the stiffness of the reaction spring, and the variation with the initial angle of the reaction spring is closely linear but the stiffness nonlinear.

Publication: IEICE TRANSACTIONS on Electronics Vol.E88-C No.8 pp.1647-1651

Publication Date: 2005/08/01

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DOI: 10.1093/ietele/e88-c.8.1647

Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices--Selected Papers from International Session on Electro-Mechanical Devices 2004 (IS-EMD2004)--)

Category: Contactors & Circuit Breakers

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Honggang XIANG, Degui CHEN, Xingwen LI, Zhipeng LI, Weixiong TONG, "Investigation on the Dynamic Characteristics of a Magnetic Release in Molded Case Circuit Breaker" in IEICE TRANSACTIONS on Electronics, vol. E88-C, no. 8, pp. 1647-1651, August 2005, doi: 10.1093/ietele/e88-c.8.1647.
Abstract: A method is proposed to investigate the dynamic characteristics of a magnet release in molded case circuit breaker. With the static field assumption, two grids of the magnetic torque and flux linkage are calculated with the variation of the current and air gap, firstly. Considering the influence of tripping torque, coupled with circuit equation and mechanism motion equation, the dynamic characteristics may be obtained with Runge-Kutta 4 method. Experiments have been done to verify the method, and the difference between the calculated results and the experimental results is below 10%. In addition, the influence of the reaction spring on the protection characteristics is analyzed using this method. It demonstrates that the setting current varies with the initial angle and the stiffness of the reaction spring, and the variation with the initial angle of the reaction spring is closely linear but the stiffness nonlinear.
URL: https://globals.ieice.org/en_transactions/electronics/10.1093/ietele/e88-c.8.1647/_p

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@ARTICLE{e88-c_8_1647,
author={Honggang XIANG, Degui CHEN, Xingwen LI, Zhipeng LI, Weixiong TONG, },
journal={IEICE TRANSACTIONS on Electronics},
title={Investigation on the Dynamic Characteristics of a Magnetic Release in Molded Case Circuit Breaker},
year={2005},
volume={E88-C},
number={8},
pages={1647-1651},
abstract={A method is proposed to investigate the dynamic characteristics of a magnet release in molded case circuit breaker. With the static field assumption, two grids of the magnetic torque and flux linkage are calculated with the variation of the current and air gap, firstly. Considering the influence of tripping torque, coupled with circuit equation and mechanism motion equation, the dynamic characteristics may be obtained with Runge-Kutta 4 method. Experiments have been done to verify the method, and the difference between the calculated results and the experimental results is below 10%. In addition, the influence of the reaction spring on the protection characteristics is analyzed using this method. It demonstrates that the setting current varies with the initial angle and the stiffness of the reaction spring, and the variation with the initial angle of the reaction spring is closely linear but the stiffness nonlinear.},
keywords={},
doi={10.1093/ietele/e88-c.8.1647},
ISSN={},
month={August},}

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TY - JOUR
TI - Investigation on the Dynamic Characteristics of a Magnetic Release in Molded Case Circuit Breaker
T2 - IEICE TRANSACTIONS on Electronics
SP - 1647
EP - 1651
AU - Honggang XIANG
AU - Degui CHEN
AU - Xingwen LI
AU - Zhipeng LI
AU - Weixiong TONG
PY - 2005
DO - 10.1093/ietele/e88-c.8.1647
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E88-C
IS - 8
JA - IEICE TRANSACTIONS on Electronics
Y1 - August 2005
AB - A method is proposed to investigate the dynamic characteristics of a magnet release in molded case circuit breaker. With the static field assumption, two grids of the magnetic torque and flux linkage are calculated with the variation of the current and air gap, firstly. Considering the influence of tripping torque, coupled with circuit equation and mechanism motion equation, the dynamic characteristics may be obtained with Runge-Kutta 4 method. Experiments have been done to verify the method, and the difference between the calculated results and the experimental results is below 10%. In addition, the influence of the reaction spring on the protection characteristics is analyzed using this method. It demonstrates that the setting current varies with the initial angle and the stiffness of the reaction spring, and the variation with the initial angle of the reaction spring is closely linear but the stiffness nonlinear.
ER -