NDLI: Research on dynamic characteristics of permanent magnet brushless DC Motor operating mechanism in 126kV vacuum circuit breaker

Content Provider	IEEE Xplore Digital Library
Author	Li Haomin Lin Xin
Copyright Year	2013
Description	Author affiliation: Liaoning Province Key Lab. of Safe Oper. & Monitoring of Power Grid, Shenyang, China (Li Haomin; Lin Xin)
Abstract	According to an independent-developed motor operating mechanism of 126kV circuit breaker, the dynamic behavior was studied by simulation and experiment methods simultaneously. In this research, mathematical model of the actuator was established and dynamic load characteristics including equivalent moment of inertia and dynamic counter-force were analyzed in detail. Meanwhile, relationship between stroke of moving contact and rotating angle of driving motor was derived strictly. Based on the analyses above, transient magnetic field and dynamic parameters of driving motor were simulated by employing coupled field-circuit method which took the end winding leakage inductance into consideration. Opening and closing operation experiments were carried out by using the established test platform which combined motor operating mechanism with vacuum circuit breaker. The test results indicated that motor operating mechanism could be able to achieve opening and closing operation of 126kV vacuum circuit breaker reliably. The average closing velocity and opening velocity could reach 2.37m/s and 3.31m/s respectively, which totally met the requirement of vacuum circuit breaker. Simulation analyses of dynamic characteristics were in agreement with test results well. That verified the validity of the simulation analyses.
Starting Page	1
Ending Page	4
File Size	826801
Page Count	4
File Format	PDF
ISBN	9781479938179
DOI	10.1109/ICEPE-ST.2013.6804395
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-10-20
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Analytical models Dynamic characteristic Simulation Circuit breakers Motor operating mechanism Vacuum technology Reliability Springs Permanent magnet brushless DC motor Vacuum arcs 126kV vacuum circuit breaker
Content Type	Text
Resource Type	Article

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