文档介绍：湖南工程学院应用技术学院毕业设计说明书题目: 智能无弧交流接触器专业班级: 电气工程及自动化 1285 学生姓名: 朱斌浩学号: 201213010501 完成日期: 2016 年5月8日指导教师: 赵毅君(教授) 评阅教师: 施晓蓉(副教授) 2016 年5月摘要因为交流接触器在使用过程中通,断的频繁过程,会产生电弧,从而影响接触器的使用寿命。研发智能无弧交流接触器是当前的趋势。 Abstract AC contactor played an irreplaceable role in the field of low-voltage distribution and automation control. So consistency of performance of the AC contactor has great economic significance. B ut further development has so far been constrained by its electrical life which below the mechanical life ’s level. T he direct effect on electrical life is electric arc that has produced in switching process. E specially under the use of categories of AC-4, the arc generating by switching process e the key restriction of the electrical life of the AC contactor. In view of the above problem s, this paper put forward a research plan about intelligent Low voltage Ac contactor without arc. As to the problems in the closing and breaking process, we make the intelligent improvement to solve them. The improvement includes two aspects. o ne aspect is the improvement of ic system. this paper design s the corresponding experimental circuit used to determine the specific field parameters which mainly about the DC excitation voltage and DC small voltage. And the design of the intelligent excitation operation of the actuator thereby ensures the stability of the excitation process. The other aspect is intelligent transformation according to the contact system. As to this, the theories mainly divided into zero current breaking and contactless breaking, this paper adopts the contactless breaking concept. The specific approach is in each phase of contact ends connect in parallel with a Bidirectional Triode Thyristor, and supporting the corresponding design of drive circuit and trigger circuit. This makes Bidirectional Triode Thyristor realize shunt in AC contactor on-off process, namely Bidirectional Triode Thyristor bears the main circuit current signal before the on-off process. So it can make