Asynchronous Modular The Contactors Structure Design And Motion Characteristics

The contactor contact points, the arc generated in the combined process is the maininfluence of its life, if achieving its arc breaking and bounce closed, can significantlyincrease the service life of the contact device, reducing the requirements of theinterrupter device,improve the actual breaking capacity of the contactor. This project is tostudy the dynamic characteristics and control method for asynchronous modularcontactors, proposed to achieve contactor Arcless the breaking the closed controlprogram and no bounce.To CJX1-63AC contactor as the research object, measuring the size of the contactorcoil inductance, spring reaction force parameters to import ansoft, electromagneticsystem dynamics model for dynamic simulation. Respectively suction under differentexcitation voltage, the closing phase angle conditions contactor closing movementprocess simulation obtained contactor various closing conditions under different dynamiccharacteristics. Using MATLAB to solve the the contactor contact bounce differentialequations of motion, calculated the contact bounce characteristics under the variousclosing conditions. Then, based on the core impact velocity and the electromagnetic force,the approximate calculated core bounce distance. Proposed contactor motioncharacteristics of the improved method, take segments to strengthen the program of theexcitation voltage, reducing contact bounce and core impact and reduce exercise timeand stability in the core after the pull to join the low-voltage DC power supply, reducingenergy consumption and reduceThe core pressure between.Establish the contactor solenoid agencies magnetic circuit model to the originalmodel, the suction joint location electromagnetic suction the minimum reference value,calculate the required voltage value, and then in the improved model is stable pull-intime to join the DC voltage source obtained simulation results with the magneticThe pathcalculation results are substantially equal. Analysis of the release characteristics of theimproved model, in the above-pass into the low-voltage DC power supply based on the model simulation, drawn contactor release characteristics, obtained according to therelease time of the control program of the sub-gate. The improved model characteristicsof the original model, draw improved model features greatly improve.