WinCC及S7-300在电封闭交流传动测试台中的应用

Application of WinCC and S7-300 to Test System in Electric Energy Return AC Drives

运用电封闭及交流矢量控制技术设计了2 000 kW交流传动测试系统,同时以WinCC6.0组态软件和S7-300系列PLC为核心替代传统的板卡与编写程序的结合开发了系统控制软件,节省能源且提高了机械测试系统软件的开发效率。WinCC与PLC通过MPI协议通讯,上位机采用组态与脚本相结合实现参数设置、数据显示、报表生成、用户管理及故障信息处理等;下位机PLC与现场的设备通过Profibus-DP构成控制网络,实时对系统设备进行控制并对测试数据进行采集。现场运行结果表明,所设计的系统运行稳定、可靠,设计方案对机械测试系统的开发具有一定的参考价值。

To save energy and raise the development efficiency of mechanical test system,the 2 000 kW AC drives test system is designed by using electric energy return and vector control technology,and the control software is developed based on Siemens WinCC software and S7-300 series PLC instead of the traditional combination of board and programming.Communications between WinCC and PLC are designed with MPI protocol.Using configuration and script together,the parameters setting,the data displaying,the report generation,the users management and the fault information management are implemented.PLC communicates with field devices by Profibus-DP to real time control devices and collect test data.Application results show that the designed test system runs steadily and reliably.This solution plays a certain reference role in the development of mechanical test systems.