Design and Simulation Analysis of Magnetic Adjustable Electromagnetic Release

doi:10.16628/j.cnki.2095-8188.2024.10.012

Abstract

Abstract:

In power distribution systems,molded case circuit breaker(MCCB) play a role in protecting the short-circuit current of line.However,when using this traditional tripping method(screw tube type and rotary snap on type) to achieve protection against short-circuit current,the power distribution structure cannot flexibly change with the load.Therefore,the design points of the structure of the magnetic adjustable electromagnetic release is described.Based on Ansys software,the static and dynamic characteristics of the electromagnetic release are analyzed,and the design results are verified through simulation examples and experiments.The reliability of the magnetic adjustable electromagnetic release is verified,and the overcurrent protection performance of the molded case circuit breaker is improved.

Key words: molded case circuit breaker, electromagnetic release device, design, simulation

CLC Number:

TM561

LI Xiankai, LU Chunrong, GAN Jiaqi. Design and Simulation Analysis of Magnetic Adjustable Electromagnetic Release[J]. LOW VOLTAGE APPARATUS, 2024, 0(10): 72-78.

参数	t₀时刻	t₁时刻
磁可调弹簧力F_C/N	2.10	5.60
衔铁反力弹簧力F_J/N	1.00	1.60
推杆复位弹簧反力F_D/N	—	1.00
机构反力F_P/N	—	5.5
d₀/mm	7.39	7.02
d₁/mm	11.43	11.75
d₂/mm	22.98	22.98
d₃/mm	19.38	19.06
d₄/mm	—	35.11
d₅/mm	—	13.06
d₆/mm	—	11.08
d₇/mm	—	12.31

参数	t₀时刻	t₁时刻
磁可调弹簧力F_C/N	15.40	18.90
衔铁反力弹簧力F_J/N	1.00	1.60
推杆复位弹簧反力F_D/N	—	1.00
机构反力F_P/N	—	5.50
d₀/mm	7.19	6.82
d₁/mm	11.43	11.75
d₂/mm	22.98	22.98
d₃/mm	19.38	19.06
d₄/mm	—	35.11
d₅/mm	—	13.06
d₆/mm	—	11.08
d₇/mm	—	12.31

短路电流	力矩	t₀时刻	t₁时刻
5I_n	反力矩	50.58	319.18
5I_n	吸合力矩	141.67	213.07
10I_n	反力矩	241.99	494.39
10I_n	吸合力矩	285.45	407.54

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Design and Simulation Analysis of Magnetic Adjustable Electromagnetic Release

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