| 采用单片机的交流电动机节能及保护控制系统 |
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| 引用本文： | 蔡春伟,张东亮. 采用单片机的交流电动机节能及保护控制系统[J]. 兵工自动化, 2003, 22(5): 50-51 |
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| 作者姓名： | 蔡春伟 张东亮 |
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| 作者单位： | 山东大学,控制科学与工程学院,山东,济南,250061 |
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| 摘 要： | 交流电动机节能及保护控制系统，根据电机负载电流，用单片机进行星-三角切换改变绕组电压，实现节能，系统采用霍尔传感器和电压传感器对电压和电流采样，转化成电压信号输给压控芯片LM231，AT89C51对脉冲计数测频，求得电压值和电机电流，AT89C51通过模拟开关检测信号，由74HC165扩展拨码开关设定系统参数，系统软件对电机过载和短路、缺相、欠压、三相不平衡等进行监测，实现自动保护。
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| 关 键 词： | 控制系统 节能保护 单片机 交流电动机 AT89C51 节能原理 |
| 文章编号： | 1006-1576(2003)05-0050-02 |
| 修稿时间： | 2003-04-09 |
Control System for Energy Saving and Protection of AC Motor Based on Micro-Controller |
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| CAI Chun-wei,ZHANG Dong-liang. Control System for Energy Saving and Protection of AC Motor Based on Micro-Controller[J]. Ordnance Industry Automation, 2003, 22(5): 50-51 |
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| Authors: | CAI Chun-wei ZHANG Dong-liang |
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| Abstract: | In AC motor energy conservation and protection system, according to different load current of the motor, modes between the star and the triangle connection is changed with microcomputer to change the winding voltage and save energy. The Halls sensor and voltage sensor is used for sampling current and voltage in the system, and the signals are transformed into voltage signal and sent to the LM231. AT89C51 counts pulse quantity and measures pulse frequency to gets voltage and current value of the motor. AT89C51 measures the signal by analog switch. The parameters of the system are set with the dialing switches extended by 74HC165. The overloading, short circuit, missing of phases, lack of voltage, unbalance of the three phases of the motor are monitored and the automatic protection of the motor is implemented with system software. |
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| Keywords: | Control system Energy saving and protection Micro-controller AC motor |
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