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智能交流接触器自校正控制技术

DOI: 10.13334/j.0258-8013.pcsee.2015.06.028, PP. 1516-1523

Keywords: 智能交流接触器,电压控制模式,自校正,电流扫描

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Abstract:

将电力电子传统的电压控制模式及Buck电路经改造应用于交流接触器的智能控制中,实现了智能交流接触器的闭环控制。在此基础上,提出了加入主触头状态捕捉电路的自校正控制方案,分析自校正控制的工作原理,采用电流扫描方式实现自校正控制,使智能交流接触器具有起动过程自校正功能,减少了智能交流接触器起动过程中的触头弹跳。通过对自校正参数的记忆,精确复现起动电流,减少了智能交流接触器在线运行的触头弹跳。该控制方案对接触器本体的结构参数依赖较低,对输入电压波动不敏感,可以自动调整吸力特性,不需要对接触器进行复杂的建模仿真即可完成相对优化的过程控制,提高智能交流接触器的电寿命,结合相关实验验证了方案的有效性。

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