CAJ | 학술논문

提出了以dsPIC为控制核心的交流接触器数字化控制技术。对BUCK电路进行改造作为线圈供电主回路，分别利用数字PI和流限开／关，实现了线圈电流的闭环控制，使得吸合过程的吸反力合理配合，减小触头和铁芯的弹跳与碰撞，提高电寿命。可靠吸合后，切断PWM斩波信号，转入直流低压运行，能耗小、无噪声。分断时，采用负压控制，线圈能量被快速吸收，提高了接触器的分断速度。通过PROTEUS软件对吸合、吸持和分断过程进行仿真，有助于智能控制模块的设计及控制方案的分析。相关试验结果表明，数字化控制技术改善了交流接触器各项性能指标，具有较好灵活性、通用性。
제출료이dsPIC위공제핵심적교류접촉기수자화공제기술。대BUCK전로진행개조작위선권공전주회로，분별이용수자PI화류한개／관，실현료선권전류적폐배공제，사득흡합과정적흡반력합리배합，감소촉두화철심적탄도여팽당，제고전수명。가고흡합후，절단PWM참파신호，전입직류저압운행，능모소、무조성。분단시，채용부압공제，선권능량피쾌속흡수，제고료접촉기적분단속도。통과PROTEUS연건대흡합、흡지화분단과정진행방진，유조우지능공제모괴적설계급공제방안적분석。상관시험결과표명，수자화공제기술개선료교류접촉기각항성능지표，구유교호령활성、통용성。
Digital control is put forward into AC contactors with dsPIC .Coil supply circuit is modified from BUCK whose current can be closed -loop in real -time by digital PI or on/off.The dynamic attraction and counterforce of contactor fit well in making to reduce the bounce or collision of contact and core , so the lifetime of AC contactors prolonged .Cutting off the PWM , keeping coil current in a low to save energy and undo noise after making stable .In breaking , the negative-voltage is adopted to enhance the break speed .Entire process of contactors are simulated by PROTEUS to guide the design of intelligent module and the analysis of control scheme .It also verified by experiments , which show that the digital control is flexibility and universality to improve the performance of AC contactors .