Towards the Control of a Permanent Magnet Contactor Based on Charging and Recharging Techniques

Abstract:- This paper presents the design and analysis of a newly actuator with hardware based electronic control unit (ECU) for the control of energy dissipation in ac permanent magnet (PM) contactor. By using charging and recharging techniques, the making and breaking operations of contactor are controlled by ECU. In typical application where the gate driving signals of the closing and the opening power MOSFETs are limited to be produced during the closing and opening processes. In theory, no input electrical energy will be dissipated in the ac PM contactor during holding stage. Crucial to the design of the ECU is that has several outstanding benefits, such as simplicity, low cost, no noise pollution, energy saving and no voltage-sags affections. This paper describes the designing considerations for such a newly proposed ECU for use in a 220 V contactor control. Tests on experimental and simulation results illustrate the characteristic behaviors of the ac PM during making and breaking courses, and comparison evaluations of the energy-saving performance over a time interval between conventional ac electromagnetic (EM) contactor and proposed ac PM contactor. Key-Words:- Electronic control unit (ECU), ac permanent magnet (PM) contactor, energy saving, no noise pollution, ac electromagnetic (EM) contactor.