permanent magnet actuator,intrinsic

关键词:low voltage control,permanent magnet actuator,intrinsic

safety,vacuum contactor
摘要:This paper reports a new application of permanent magnet

actuator for vacuum contactors.A novel permanent magnet(PM)

actuator to drive a vacuum contactor Neodymium Magnets with intrinsically safe and

low supply voltage is proposed.PM is mounted on the static iron

of the contactor to enhance its holding force and

reliability.While only one coil is used to break the vacuum

contactor,two series coils http://www.999magnet.com/products/110-sintered-neodymium-magnets are deployed to yield a high

magnetomotive force to realize the making operation.The

electrical circuit equation,mechanical equation and magnetic

field are all coupled in the simulation.A prototype is

manufactured and tested to validate and showcase the performance

of the contactor which is equipped with the proposed PM actuator.