摘要
针对城市智能楼宇建筑生活及消防供水系统需求,利用PLC,变频器和PID调节器构建交流双恒压双变频闭环调速控制系统.该系统根据供水系统出口处的水压和流量,利用PLC控制变频/工频及电动机泵组的速度和切换,实现了闭环自动调节恒压变量供水.利用MCGS组态软件对该系统进行模拟调试,运行结果表明:该系统可靠性高、扩展性好,动态响应速度快,启动时压力波动小.
For the need to build an intelligent building life and fire water supply system,a design was proposed,which was composed of PLC,frequency converter and PID regulator and could achieve AC dual-constant-pressure,dual-frequency-convert close-loop speed governing control.According to water-out pressure and flow rate,the system can provide constant pressure alternating quantity water supply by controlling the speed of motor unit and switchover from variable frequency to power-frequency.Simulation of the above system in MCGS showed that the system has pressure stability,simple structure and good reliability.
出处
《郑州轻工业学院学报（自然科学版）》
CAS
2011年第1期62-65,共4页
Journal of Zhengzhou University of Light Industry:Natural Science
基金
河南省科技厅科技攻关项目(102102210141)
